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Page 1: Antibiotics and their Resistance Gene Path to Humans

An#bio#c  Use  in  Animals  in  the  News  

Kennedy,  Nov  15,  2013,  Science  

   

Since:  •  WHO  •  FDA  •  President  Obama  

Page 2: Antibiotics and their Resistance Gene Path to Humans

Increasing  an#bio#c  resistance  genes  in  soil  

in soil bacteria may be another factor impacting our battleagainst global AR.

AcknowledgmentsWe thank T. Schwartz and H. J. Monstein for providing DNAstandards, and William Sloan for comments on the manu-script. C.W.K., J.D., and D.W.G. were funded by ECOSERV,an EU Marie Curie Excellence Programme (MEXT-CT-2006-023469).

Supporting Information AvailableAdditional information on the regression analysis of log-transformed 16S-rRNA gene abundances versus time (TableS1); the abundance of 16S-rRNA genes and ARG for eachsample-year and sample-site (Table S2); exponential ratecoefficients for ARG genes and heavy metals based on unitized

data from 1940 to 2008 (Table S3); antibiotic production levelsin the United States (kton per year) from 1950 to 1986 (FigureS1); heavy metals over time among soils based on unitizeddata from 1940 to 2008 (Figure S2); and utilization of selectedantibiotics in agriculture in The Netherlands between 1997and 2007 (Figure S3). This information is available free ofcharge via the Internet at http://pubs.acs.org/.

Literature Cited(1) Committee on Human Health Risk Assessment of using Sub-

therapeutic Antibiotics in Animal Feeds. Human Health Riskswith the Subtherapeutic Use of Penicillin or Tetracyclines inAnimal Feed; Institute of Medicine, Division of Health Promotionand Disease Prevention: National Academy Press, Washington,DC, 1989.

(2) Martinez, J. L. Antibiotics and antibiotic resistance genes innatural environments. Science 2008, 321, 365–367.

(3) Bergstrom, C. T.; Feldgarden, M., The Ecology and Evolutionof Antibiotic-Resistant Bacteria In Evolution in Health andDisease; Stearns, S., Koella, J., Eds.; Karen Bush/J&J, 2008.

(4) Taubes, G. The bacteria fight back. Science 2008, 321, 356–361.(5) Frost, A. J., Antibiotics and animal production In Microbiology

of Animals and Animal Products; Woolcock, J. B., Ed. Elsevier:Amsterdam, 1991; pp 181-194.

(6) Sarmah, A. K.; Meyer, M. T.; Boxall, A. B. A. A global perspectiveon the use, sales, exposure pathways, occurrence, fate and effectsof veterinary antibiotics (VAs) in the environment.Chemosphere2006, 65, 725–759.

(7) Levy, S. B. Factors impacting on the problem of antibioticresistance. J. Antimicrob. Chemother. 2002, 49 (1), 25–30.

(8) Ungemach, F. R. Figures on quantities of antibacterials usedfor different purposes in the EU countries and interpretation.Acta Vet. Scand. 2000, 89–98.

(9) Commission of the European Communities. Report from thecommission to the council on the basis of member states’ reportson the implementation of the council recommendation (2002/77/EC) on the prudent use of antimicrobial agents in humanmedicine; Council of the European Union: Brussels, Belgium,2002.

(10) Swan Report. Report of the joint committee on the use ofantibiotics in animal husbandry and veterinary medicine;H.M.S.O.: London, UK, 1969.

(11) Kummerer, K. Resistance in the environment. J. Antimicrob.Chemother. 2004, 54 (2), 311–320.

(12) Davies, J. Inactivation of antibiotics and the dissemination ofresistance genes. Science 1994, 264 (5157), 375–382.

(13) Clark, I. M.; Hirsch, P. R. Survival of bacterial DNA and culturablebacteria in archived soils from the Rothamsted Broadbalkexperiment. Soil Biol. Biochem. 2008, 40 (5), 1090–1102.

(14) Dolfing, J.; Vos, A.; Bloem, J.; Ehlert, P. A. I.; Naumova, N. B.;Kuikman, P. J. Microbial diversity in archived soils.Science 2004,306 (5697), 813–813.

(15) Tzeneva, V. A.; Salles, J. F.; Naumova, N.; de Vos, W. M.; Kuikman,P. J.; Dolfing, J.; Smidt, H. Effect of soil sample preservation,compared to the effect of other environmental variables, onbacterial and eukaryotic diversity. Res. Microbiol. 2009, 160 (2),89–98.

(16) Yu, Y.; Lee, C.; Kim, J.; Hwang, S. Group-specific primer andprobe sets to detect methanogenic communities using quan-titative real-time polymerase chain reaction.Biotechnol. Bioeng.2005, 89 (6), 670–679.

(17) Peak, N.; Knapp, C. W.; Yang, R. K.; Hanfelt, M. M.; Smith, M. S.;Aga, D. S.; Graham, D. W. Abundance of six tetracyclineresistance genes in wastewater lagoons at cattle feedlots withdifferent antibiotic use strategies. Environ. Microbiol. 2007, 9(1), 143–151.

(18) Smith, M. S.; Yang, R. K.; Knapp, C. W.; Niu, Y. F.; Peak, N.;Hanfelt, M. M.; Galland, J. C.; Graham, D. W. Quantification oftetracycline resistance genes in feedlot lagoons by real-timePCR. Appl. Environ. Microbiol. 2004, 70 (12), 7372–7377.

(19) Patterson, A. J.; Colangeli, R.; Spigaglia, P.; Scott, K. P. Distributionof specific tetracycline and erythromycin resistance genes inenvironmental samples assessed by macroarray detection.Environ. Microbiol. 2007, 9 (3), 703–715.

(20) Volkmann, H.; Schwartz, T.; Bischoff, P.; Kirchen, S.; Obst, U.Detection of clinically relevant antibiotic-resistance genes inmunicipal wastewater using real-time PCR (TaqMan). J. Mi-crobiol. Meth. 2004, 56, 277–286.

FIGURE 2. Relative increase of antibiotic resistance genesamong soils collected at five sites in The Netherlands from1940 to 2008. All values have been normalized to 16S rRNAgene abundances. Normalized values were then groupedaccording to decade and unitized relative to mean observedvalues from 1970 to 1979 for each site. Normalization andunitization were required to account for differences inbacterial abundances among sites and place data from eachsite into a common unit of measure. Each time seriesrepresents the unbiased sum of standardized values from allfive sites. Table S2 provides detailed data for each site.mecA, blaOXA-1, vanA and ampC were analyzed, but werebelow detection limits. Shaded areas are the best-fit curvesfor each class of detected antibiotics assuming a first-ordermodel, which represents the basal level of resistance geneswithin the soils. Inset rate coefficients are for each class ofantibiotic. Rate coefficients for each individual detectedgene are provided in Table S3.

586 9 ENVIRONMENTAL SCIENCE & TECHNOLOGY / VOL. 44, NO. 2, 2010

Knapp  et  al.,    2010,  ES&T  

Tim  Johnson,  MSU  Robert  Sted9eld,  MSU  Syed  Hashsham,  MSU  Jim  Cole,  MSU    Torey  LooB*,  USDA  Heather  Allen,  USDA  Thad  Stanton,  USDA    Yong-­‐Guan  Zhu**,  CAS  Jianqiang  Su,  CAS    *PNAS,  2012  **PNAS,  2013  

Acknowledgements  

From 1940 to 2008 in 5 soil series in The Netherlands Hence, environmental selection is increasing

Page 3: Antibiotics and their Resistance Gene Path to Humans

An#bio#cs  and  their  resistance  gene  paths  to  humans  (outside  the  clinic)  

•  Hospital  wastes  •  Disposal  from  home  use,  WWTP  •  Manufacturing  and  formula#on  facili#es  •  Agriculture  

•  Fruit  produc#on  (minor  %  of  an#bio#c  use)  •  Animal  produc#on  (pigs,  chickens)  

•  Waste  water,  especially  reuse  in  the  Southwest  •  Manure  compost  (to  fields,  organic  fer#lizers,  vegetables)  

•  Farm  workers  •  Dust    

 Needed:  Resistance  gene,  mobile  element,    

 recep#ve  pathogen  and  an#bio#c  (or  co-­‐)  selec#on  Goal:  slow  the  rate  of  MDR  pathogens  

Page 4: Antibiotics and their Resistance Gene Path to Humans

An#bio#c deac#va#on Efflux pump Cellular protec#on Other/ unknown 

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Macrolide, lincosamide, streptogramin Quinolones, amphenicols  

In  3  commercial  Chinese  pig  farms  

Page 5: Antibiotics and their Resistance Gene Path to Humans

Transposons,  an#bio#cs,  and  metals  correlate  with  resistance  

Resistance  genes  gene#cally  mobile?    

Page 6: Antibiotics and their Resistance Gene Path to Humans

Emergence  of  integrons  JOURNAL OF BACTERIOLOGY, July 2008, p. 5095–5100 Vol. 190, No. 140021-9193/08/$08.00!0 doi:10.1128/JB.00152-08Copyright © 2008, American Society for Microbiology. All Rights Reserved.

The Evolution of Class 1 Integrons and the Rise ofAntibiotic Resistance!†

Michael Gillings,1* Yan Boucher,2 Maurizio Labbate,2 Andrew Holmes,3 Samyuktha Krishnan,1Marita Holley,1 and H. W. Stokes2

Department of Biological Sciences1 and Department of Chemistry and Biomolecular Sciences,2 Macquarie University, Sydney,NSW 2109, Australia, and School of Molecular and Microbial Biosciences, University of Sydney, NSW 2006, Australia3

Received 29 January 2008/Accepted 7 May 2008

Class 1 integrons are central players in the worldwide problem of antibiotic resistance, because they cancapture and express diverse resistance genes. In addition, they are often embedded in promiscuous plasmidsand transposons, facilitating their lateral transfer into a wide range of pathogens. Understanding the origin ofthese elements is important for the practical control of antibiotic resistance and for exploring how lateral genetransfer can seriously impact on, and be impacted by, human activities. We now show that class 1 integrons canbe found on the chromosomes of nonpathogenic soil and freshwater Betaproteobacteria. Here they exhibitstructural and sequence diversity, an absence of antibiotic resistance genes, and a phylogenetic signature oflateral transfer. Some examples are almost identical to the core of the class 1 integrons now found inpathogens, leading us to conclude that environmental Betaproteobacteria were the original source of thesegenetic elements. Because these elements appear to be readily mobilized, their lateral transfer into humancommensals and pathogens was inevitable, especially given that Betaproteobacteria carrying class 1 integronsare common in natural environments that intersect with the human food chain. The strong selection pressureimposed by the human use of antimicrobial compounds then ensured their fixation and global spread into newspecies.

The rapid appearance and rise of the class 1 integron is oneof the most stunning examples of evolution in action, driven bythe power of natural selection. Class 1 integrons appeared in anumber of different locations, and on different plasmids andtransposons, coincident with the widespread use of antibiotics(5, 29). They are now found in 40 to 70% of gram-negativepathogens isolated from clinical contexts (7, 18) and at similarfrequencies in pathogens and commensals isolated from live-stock (6, 10). The rapid spread of class 1 integrons throughgram-negative and, more recently, into gram-positive specieshas been facilitated by their location on mobile DNA elements,such as plasmids and transposons, coupled with the selectiveadvantage conferred by their associated antibiotic resistancegenes (5, 26, 35). They have created a worldwide crisis in themanagement of bacterial infections.

There are at least 90 distinct integron classes, mostly locatedon chromosomes, and about 10% of sequenced bacterial ge-nomes carry these elements (3, 19). All integrons capture mo-bile gene cassettes using site-specific recombination mediatedby an integron-integrase (intI) (12). This integrase type cata-lyzes recombination between a primary recombination site(attI) and a corresponding 59-base element site (59-be or attC)carried on mobile gene cassettes. Through this activity, chro-mosomal integrons can accumulate up to hundreds of cassettesin a tandem array extending from attI, thus contributing exten-

sively to the diversity of bacterial genomes (9, 14, 27). Chro-mosomal integrons do exhibit intragenomic, intercellular, andinterspecies movement over evolutionary time frames but aregenerally stable in particular phylogenetic lineages (3, 9, 14, 19,20, 27).

The first integrons to be described, classes 1, 2, and 3, exhibita number of features not typical of the more numerically dom-inant chromosomal integron classes. They are carried on trans-posons and/or plasmids and most commonly contain from 0 to6 cassettes drawn from a pool of about 100 cassettes in total,almost all of which encode antibiotic resistance determinants(24, 30). There is experimental evidence (26) that the antibioticresistance genes found in class 1, 2, and 3 integrons wereacquired by capturing gene cassettes from the vast pool ofdiverse cassettes that are prevalent in microbial communities(3, 19, 21, 28).

While potential sources of resistance genes may have beenidentified, the origin of the class 1 recombination platform,now so abundant in clinical pathogens, is not known. Since theclass 1 integron has had a major role in the spread of antibioticresistance and led to worldwide difficulties in controlling bac-terial infection, understanding the origin of these elements isimportant both for practical control of antibiotic resistance andfor exploring the means by which bacterial lateral gene transfercan seriously impact on, and be impacted by, human activities.

Clues to this origin lie in features that are common to class1 integrons from clinical contexts. The nucleotide sequencesfor their integrase genes (intI1) are identical, or nearly so,strongly suggesting that these elements were derived from avery recent common ancestor. Here we will use the term “clin-ical” class 1 integrons to refer to the group of integrons whichshare this nucleotide sequence and are commonly found in

* Corresponding author. Mailing address: Biological Sciences, Mac-quarie University, Sydney, NSW 2109, Australia. Phone: 61 2 98508199. Fax: 61 2 9850 9237. E-mail: [email protected].

† Supplemental material for this article may be found at http://jb.asm.org/.

! Published ahead of print on 16 May 2008.

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were conjugated into a human commensal or pathogen. Thisfirst cassette may have encoded qacE, since it is a commonfeature of clinical class 1 integrons, and quaternary ammoniumcompounds have a longer history of use than antibiotics. Onceresident in the human population, the chances of evolutionarysuccess for such an element were vastly improved. The abilityof class 1 integrons to access antibiotic resistance cassettes,coupled with the enhanced mobility conferred by the plasmid/transposon combination, allowed the rapid spread and struc-tural diversification of clinical class 1 integrons, while still re-taining the class 1 core that participated in the originalmobilization event (Fig. 2).

A key prediction of this model is that representatives of therecipient Tn402-like element should still be recoverable. Suchan element should carry flanking sequences that are present inclinical class 1 integrons but lacking in their betaproteobacte-rial ancestors. We have found such an element in a survey offecal bacteria from healthy volunteers. An isolate of Entero-bacter cloacae was recovered which contained a putative trans-poson (Tn6008) carrying IRi and part of the 5!-CS, extendingup to the ISPa7 insertion point (Fig. 1A; see also Fig. S1 in thesupplemental material). It also carried IRt and tniA (althoughnot of the Tn402 type) but did not carry intI1 or any gene

cassettes. Consequently, Tn6008 is a representative of the kindof element into which a chromosomal class 1 integron wasoriginally inserted. Recombination between a Tn6008-like el-ement and a betaproteobacterial class 1 integron at the ISPa7insertion point would generate the 5!-CS typical of clinicalclass1 integrons (Fig. 1; see also Fig. S1 in the supplementalmaterial). Tn6008 is from a commensal bacterium that alsocauses nosocomial infections, reinforcing the ease with whichmobile elements can move between environments and provid-ing a plausible route for entry of betaproteobacterial class 1integrons into human commensal flora. This E. cloacae isolatewas recovered in the absence of antibiotic selection, under-scoring the fact that the current antibiotic resistance epidemiccannot be fully understood by only examining hospital isolatesrecovered using antibiotic resistance media.

While Tn6008 represents the kind of element into which aclass 1 integron might have been inserted, it is not the imme-diate ancestor of clinical class 1 integrons, since it lacks therequired set of transposition genes. However, further clues tothe most immediate past event that linked the class 1 integronto a Tn402-like transposon can be found in the Thauera, Hy-drogenophaga, and Aquabacterium integrons. Their left-handboundaries agree with the model described above. In addition,these integrons also have a common right-hand boundary, 44bases beyond the recombination point of the last gene cassettein each of their arrays. The 44 nucleotides leading up to thisboundary are identical, or very nearly so, to a region of Tn402in the same relative position (see Fig. S3 in the supplementalmaterial). Thus, we predict that the Tn402-like transposon thatcaptured the class 1 integron lacked these 44 bases, since theywere brought into the transposon when the class 1 integron wascaptured.

Why was the class 1 integron the most successful in pene-trating and propagating in the clinical environment? We pos-tulate that the predisposition of class 1 integrons for mobili-zation and their presence in a bacterial group that iswidespread and relatively abundant in water supplies weresignificant factors in their preeminent role in the integron-borne antibiotic resistance epidemic. However, given the ap-parent ubiquity of integrons in the environment, the selectionof an integron with the ability to sequester antibiotic resistancegenes was probably inevitable once antibiotics began to bewidely used. In support of this idea, the other two integrons ofclinical importance, classes 2 and 3, may also have recentenvironmental ancestors. A functional class 2 integron contain-ing four gene cassettes, none of which encodes antibiotic re-sistance, has been isolated from Providencia stuartii (1). Simi-larly, a chromosomal class 3 integron has recently beenrecovered from Delftia (34). This genus is also in the Betapro-teobacteria, and the class 3 integrases are the sister group ofclass 1 integrases. Finally, the Vibrio salmonicida resistanceplasmid pRVS1 carries a tetracycline resistance gene cassetteassociated with an integron-integrase gene that is 99% identi-cal to the chromosomal integrase in Pseudoalteromonas halo-planktis (32). Consequently, even if we could eliminate allintegron-borne antibiotic resistance determinants from the hu-man environment, new antibiotic resistance integrons wouldinevitably be selected from the vast pool of integrons and genecassettes that are always endemic in natural environments.

FIG. 2. Model for the origin and subsequent divergence of the class1 integrons that are now widely disseminated in pathogens and humancommensals. Stages in the hypothetical evolution are as follows. (Aand B) The common ancestor of clinical class 1 integrons was a mem-ber of an integron pool that was repeatedly acquired by diverse Beta-proteobacteria but not other lineages (Fig. 1) (21). (C and D) Onebetaproteobacterial chromosomal integron inserted/recombined into aTn402-like element. This event occurred prior to, or concomitant with,the antibiotic era. Capture of qacE probably occurred around the sametime. (E) sul1 and orf5 were captured. (F) Deletions, insertions, andother rearrangements involving qacE, sul1, and adjacent sequencegenerated the 3!-conserved segment (3!-CS). (G) Deletions and inser-tions involving tni generated Tn402 transposition-incompetent inte-grons, which conferred various antibiotic resistance phenotypes due totheir diverse cassette arrays. (H) trans-mediated Tn402-like transposi-tion events moved integrons into diverse plasmids and other trans-posons, such as the Tn21 family (22). These events generated furtherdiversity and accelerated the penetration of class 1 integrons into awide variety of pathogens and commensals.

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Page 7: Antibiotics and their Resistance Gene Path to Humans

Sequencing  of  the  is6100-­‐intI1  cluster    

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GapA.F_OTU

_0007_582

GapA.F_OTU

_0056_609

GapA.F_OTU

_0111_883

GapA.F_OTU

_5528_2015

GapA.F_OTU

_0000_145966

dfrA1_OTU

_061_151

dfrA1_OTU

_069_153

dfrA1_OTU

_005_157

dfrA1_OTU

_014_165

dfrA1_OTU

_016_171

dfrA1_OTU

_018_180

dfrA1_OTU

_004_182

dfrA1_OTU

_038_186

dfrA1_OTU

_043_189

dfrA1_OTU

_010_192

dfrA1_OTU

_009_206

dfrA1_OTU

_015_288

dfrA1_OTU

_011_1949

dfrA1_OTU

_003_4460

dfrA1_OTU

_000_61459

dfra2_OTU

_030_61

dfra2_OTU

_026_70

dfra2_OTU

_021_74

dfra2_OTU

_015_77

dfra2_OTU

_016_85

dfra2_OTU

_019_86

dfra2_OTU

_004_88

dfra2_OTU

_013_89

dfra2_OTU

_012_90

dfra2_OTU

_023_107

dfra2_OTU

_000_113

dfra2_OTU

_031_124

dfra2_OTU

_005_127

dfra2_OTU

_010_159

dfra2_OTU

_001_37786

AG7_OTU

_0051_294

AG7_OTU

_0019_300

AG7_OTU

_0103_308

AG7_OTU

_0046_315

AG7_OTU

_0001_317

AG7_OTU

_0037_319

AG7_OTU

_0024_323

AG7_OTU

_0030_325

AG7_OTU

_0006_352

AG7_OTU

_0005_367

AG7_OTU

_0053_407

AG7_OTU

_0038_472

AG7_OTU

_0043_844

AG7_OTU

_0296_913

IS26_O

TU_035_371

IS26_O

TU_005_372

IS26_O

TU_021_373

IS26_O

TU_011_381

IS26_O

TU_019_383

IS26_O

TU_032_387

IS26_O

TU_009_390

IS26_O

TU_066_392

IS26_O

TU_010_399

IS26_O

TU_031_408

IS26_O

TU_029_415

IS26_O

TU_027_473

IS26_O

TU_003_491

IS26_O

TU_042_565

IS26_O

TU_000_142450

tet1_O

TU_0271_274

tet1_O

TU_0382_278

tet1_O

TU_0009_290

tet1_O

TU_0205_293

tet1_O

TU_0265_297

tet1_O

TU_0692_314

tet1_O

TU_0269_386

tet1_O

TU_0241_387

tet1_O

TU_0203_402

tet1_O

TU_0003_550

tet1_O

TU_0578_3063

tet1_O

TU_0278_5767

tet1_O

TU_0001_22800

tet1_O

TU_0252_23738

tet1_O

TU_0000_78220

Tn23_O

TU_026_133

Tn23_O

TU_021_136

Tn23_O

TU_089_140

Tn23_O

TU_045_143

Tn23_O

TU_038_146

Tn23_O

TU_047_153

Tn23_O

TU_059_165

Tn23_O

TU_022_169

Tn23_O

TU_008_184

Tn23_O

TU_006_195

Tn23_O

TU_013_208

Tn23_O

TU_020_220

Tn23_O

TU_205_373

Tn23_O

TU_053_455

Tn23_O

TU_000_50722

tnpA_O

TU_029_99

tnpA_O

TU_005_101

tnpA_O

TU_035_108

tnpA_O

TU_012_117

tnpA_O

TU_040_126

tnpA_O

TU_088_139

tnpA_O

TU_047_165

tnpA_O

TU_013_176

tnpA_O

TU_023_211

tnpA_O

TU_157_302

tnpA_O

TU_004_316

tnpA_O

TU_056_410

tnpA_O

TU_090_570

tnpA_O

TU_003_1136

tnpA_O

TU_000_31244

mefA_OTU

_0041_568

mefA_OTU

_0121_573

mefA_OTU

_2454_666

mefA_OTU

_1233_782

mefA_OTU

_5205_816

mefA_OTU

_0126_931

mefA_OTU

_2529_952

mefA_OTU

_1379_966

mefA_OTU

_3811_3455

mefA_OTU

_0282_3812

mefA_OTU

_1414_7479

mefA_OTU

_0034_10700

mefA_OTU

_0071_15229

mefA_OTU

_0951_19579

mefA_OTU

_0000_137471

is1216_OTU

_032_167

is1216_OTU

_027_177

is1216_OTU

_009_181

is1216_OTU

_006_182

is1216_OTU

_013_184

is1216_OTU

_012_192

is1216_OTU

_017_194

is1216_OTU

_090_202

is1216_OTU

_043_223

is1216_OTU

_025_242

is1216_OTU

_002_258

is1216_OTU

_019_259

is1216_OTU

_007_306

is1216_OTU

_171_322

is1216_OTU

_001_68327

AG7_OTU

_0000_106398

AG6_OTU

_0016_590

AG6_OTU

_0013_595

AG6_OTU

_0042_602

AG6_OTU

_0080_629

AG6_OTU

_0025_650

AG6_OTU

_0152_659

AG6_OTU

_0026_677

AG6_OTU

_0004_681

AG6_OTU

_0001_699

AG6_OTU

_0003_718

AG6_OTU

_0005_777

AG6_OTU

_0012_864

AG6_OTU

_0019_998

AG6_OTU

_0031_1073

AG6_OTU

_0000_236839

tet2_O

TU_0024_298

tet2_O

TU_0057_300

tet2_O

TU_0077_315

tet2_O

TU_0062_318

tet2_O

TU_0003_330

tet2_O

TU_0070_337

tet2_O

TU_0002_338

tet2_O

TU_0030_352

tet2_O

TU_0019_383

tet2_O

TU_0007_387

tet2_O

TU_0014_853

tet2_O

TU_0004_4858

tet2_O

TU_0005_8612

tet2_O

TU_0001_20063

tet2_O

TU_0000_100930

tet5_O

TU_0050_373

tet5_O

TU_0009_450

tet5_O

TU_0024_462

tet5_O

TU_0001_467

tet5_O

TU_0091_497

tet5_O

TU_0144_514

tet5_O

TU_0002_571

tet5_O

TU_0004_627

tet5_O

TU_0010_761

tet5_O

TU_0075_949

tet5_O

TU_0019_1669

tet5_O

TU_0003_1970

tet5_O

TU_0015_2209

tet5_O

TU_0005_9848

tet5_O

TU_0000_114770

tet4_O

TU_032_328

tet4_O

TU_053_330

tet4_O

TU_028_333

tet4_O

TU_023_337

tet4_O

TU_026_346

tet4_O

TU_010_348

tet4_O

TU_047_362

tet4_O

TU_012_363

tet4_O

TU_034_386

tet4_O

TU_039_388

tet4_O

TU_007_422

tet4_O

TU_008_620

tet4_O

TU_009_4144

tet4_O

TU_002_14530

tet4_O

TU_000_124412

tet3_O

TU_0087_895

tet3_O

TU_0009_969

tet3_O

TU_0015_1162

tet3_O

TU_0052_1409

tet3_O

TU_0003_1462

tet3_O

TU_0050_1469

tet3_O

TU_0011_1778

tet3_O

TU_0031_1861

tet3_O

TU_0006_1908

tet3_O

TU_0056_2050

tet3_O

TU_0016_2145

tet3_O

TU_0005_8110

tet3_O

TU_0004_16405

tet3_O

TU_0002_38959

tet3_O

TU_0001_47127

tp614_OTU

_0071_296

tp614_OTU

_0029_300

tp614_OTU

_0003_303

tp614_OTU

_0039_305

tp614_OTU

_0053_318

tp614_OTU

_0010_323

tp614_OTU

_0020_327

tp614_OTU

_0016_343

tp614_OTU

_0109_350

tp614_OTU

_0235_351

tp614_OTU

_0077_415

tp614_OTU

_0005_593

tp614_OTU

_0346_1757

tp614_OTU

_0006_12571

tp614_OTU

_0000_120359

IS613_OTU

_1637_368

IS613_OTU

_0339_380

IS613_OTU

_1603_611

IS613_OTU

_0021_632

IS613_OTU

_0012_1839

IS613_OTU

_0015_2788

IS613_OTU

_0018_3195

IS613_OTU

_0006_3739

IS613_OTU

_0036_4977

IS613_OTU

_0007_5099

IS613_OTU

_0054_8962

IS613_OTU

_0001_9580

IS613_OTU

_0366_13919

IS613_OTU

_0000_29617

IS613_OTU

_0009_29731

CHL1_O

TU_025_151

CHL1_O

TU_043_161

CHL1_O

TU_031_166

CHL1_O

TU_022_177

CHL1_O

TU_051_181

CHL1_O

TU_020_184

CHL1_O

TU_034_187

CHL1_O

TU_023_190

CHL1_O

TU_017_198

CHL1_O

TU_030_207

CHL1_O

TU_021_214

CHL1_O

TU_042_223

CHL1_O

TU_009_232

CHL1_O

TU_026_234

CHL1_O

TU_000_70169

AG9_OTU

_043_215

AG9_OTU

_021_216

AG9_OTU

_029_230

AG9_OTU

_055_244

AG9_OTU

_047_251

AG9_OTU

_027_254

AG9_OTU

_023_256

AG9_OTU

_022_261

AG9_OTU

_037_262

AG9_OTU

_034_269

AG9_OTU

_007_279

AG9_OTU

_004_289

AG9_OTU

_010_332

AG9_OTU

_001_371

AG9_OTU

_000_101290

AG8_OTU

_0051_189

AG8_OTU

_0081_195

AG8_OTU

_0002_196

AG8_OTU

_0012_200

AG8_OTU

_0231_211

AG8_OTU

_0004_219

AG8_OTU

_0022_223

AG8_OTU

_0098_233

AG8_OTU

_0044_250

AG8_OTU

_0435_264

AG8_OTU

_0441_274

AG8_OTU

_0011_551

AG8_OTU

_0105_4053

AG8_OTU

_0039_32404

AG8_OTU

_0000_53087

IS4_OTU

_0029_256

IS4_OTU

_0004_258

IS4_OTU

_0025_261

IS4_OTU

_0045_265

IS4_OTU

_0003_271

IS4_OTU

_0002_273

IS4_OTU

_0033_283

IS4_OTU

_0037_289

IS4_OTU

_0007_296

IS4_OTU

_0088_306

IS4_OTU

_0013_320

IS4_OTU

_0817_330

IS4_OTU

_0042_344

IS4_OTU

_0001_407

IS4_OTU

_0000_97897

AG5_OTU

_017_126

AG5_OTU

_015_128

AG5_OTU

_040_137

AG5_OTU

_005_139

AG5_OTU

_003_155

AG5_OTU

_051_168

AG5_OTU

_056_170

AG5_OTU

_010_189

AG5_OTU

_011_190

AG5_OTU

_002_201

AG5_OTU

_009_217

AG5_OTU

_035_230

AG5_OTU

_023_238

AG5_OTU

_001_6133

AG5_OTU

_000_49696

sul2_O

TU_0017_306

sul2_O

TU_0013_326

sul2_O

TU_0006_333

sul2_O

TU_0043_342

sul2_O

TU_0026_343

sul2_O

TU_0010_351

sul2_O

TU_0005_360

sul2_O

TU_0052_367

sul2_O

TU_0024_369

sul2_O

TU_0034_374

sul2_O

TU_0011_419

sul2_O

TU_0020_458

sul2_O

TU_0032_462

sul2_O

TU_0053_2646

sul2_O

TU_0000_133284

qac_OTU

_014_279

qac_OTU

_038_292

qac_OTU

_040_301

qac_OTU

_021_302

qac_OTU

_012_307

qac_OTU

_008_312

qac_OTU

_043_326

qac_OTU

_004_328

qac_OTU

_042_336

qac_OTU

_019_347

qac_OTU

_022_397

qac_OTU

_003_402

qac_OTU

_005_411

qac_OTU

_034_432

qac_OTU

_000_113511

tet10_OTU

_067_160

tet10_OTU

_082_162

tet10_OTU

_103_164

tet10_OTU

_097_166

tet10_OTU

_085_177

tet10_OTU

_073_179

tet10_OTU

_122_181

tet10_OTU

_112_187

tet10_OTU

_100_193

tet10_OTU

_087_244

tet10_OTU

_111_250

tet10_OTU

_127_296

tet10_OTU

_096_402

tet10_OTU

_001_10703

tet10_OTU

_000_62329

AG4_OTU

_0018_206

AG4_OTU

_0472_207

AG4_OTU

_0399_208

AG4_OTU

_0001_211

AG4_OTU

_0035_219

AG4_OTU

_0014_243

AG4_OTU

_0421_253

AG4_OTU

_0469_275

AG4_OTU

_0084_518

AG4_OTU

_0706_580

AG4_OTU

_0098_745

AG4_OTU

_0197_869

AG4_OTU

_0063_1406

AG4_OTU

_0000_55356

AG4_OTU

_0002_68636

AG3_OTU

_0065_339

AG3_OTU

_0033_345

AG3_OTU

_0035_352

AG3_OTU

_0070_364

AG3_OTU

_0063_372

AG3_OTU

_0026_394

AG3_OTU

_0069_399

AG3_OTU

_0020_402

AG3_OTU

_0045_413

AG3_OTU

_0002_432

AG3_OTU

_0006_449

AG3_OTU

_0027_451

AG3_OTU

_0012_509

AG3_OTU

_0019_512

AG3_OTU

_0000_139305

AG2_OTU

_0006_338

AG2_OTU

_0043_340

AG2_OTU

_0010_373

AG2_OTU

_0050_374

AG2_OTU

_0002_391

AG2_OTU

_0004_395

AG2_OTU

_0036_411

AG2_OTU

_0030_436

AG2_OTU

_0039_472

AG2_OTU

_0051_498

AG2_OTU

_0044_554

AG2_OTU

_0075_656

AG2_OTU

_0090_1243

AG2_OTU

_0024_4531

AG2_OTU

_0000_143382

AG1_OTU

_008_140

AG1_OTU

_058_149

AG1_OTU

_005_153

AG1_OTU

_060_156

AG1_OTU

_003_157

AG1_OTU

_054_162

AG1_OTU

_049_166

AG1_OTU

_020_173

AG1_OTU

_013_179

AG1_OTU

_076_190

AG1_OTU

_077_192

AG1_OTU

_001_226

AG1_OTU

_017_232

AG1_OTU

_002_4023

AG1_OTU

_000_59698

qINT.3_O

TU_003_266

qINT.3_O

TU_005_269

qINT.3_O

TU_053_276

qINT.3_O

TU_033_288

qINT.3_O

TU_002_292

qINT.3_O

TU_019_301

qINT.3_O

TU_022_306

qINT.3_O

TU_036_308

qINT.3_O

TU_011_313

qINT.3_O

TU_042_318

qINT.3_O

TU_021_328

qINT.3_O

TU_007_330

qINT.3_O

TU_004_365

qINT.3_O

TU_012_411

qINT.3_O

TU_000_112559

IS6100_O

TU_043_195

IS6100_O

TU_009_210

IS6100_O

TU_067_213

IS6100_O

TU_008_229

IS6100_O

TU_027_233

IS6100_O

TU_064_237

IS6100_O

TU_055_240

IS6100_O

TU_003_241

IS6100_O

TU_060_250

IS6100_O

TU_014_257

IS6100_O

TU_029_268

IS6100_O

TU_006_278

IS6100_O

TU_018_340

IS6100_O

TU_036_414

IS6100_O

TU_001_99440

IncW

_OTU

_0122_114

IncW

_OTU

_0069_116

IncW

_OTU

_0061_117

IncW

_OTU

_0152_118

IncW

_OTU

_0066_123

IncW

_OTU

_0151_128

IncW

_OTU

_0131_137

IncW

_OTU

_0114_141

IncW

_OTU

_0225_163

IncW

_OTU

_0034_171

IncW

_OTU

_0040_381

IncW

_OTU

_0162_421

IncW

_OTU

_0008_811

IncW

_OTU

_0003_1350

IncW

_OTU

_0001_36993

−10

−8−6

−4−2

0Value

Col

or K

ey

is6100  intI1    aadA5  aadA    aadA.  aadA2    tetR  qacE∆1    sul2    aadA9      is4          strA          strB    cmlA1  

allRefSeq A1 A2 A3

BM1

BM2

BM3

BC1

BC2

BC3

BS1

BS2

BS4

JM1

JM2

JM3

JC1

JC2

JC3

JS1

JS3

JS4

PM1

PM2

PM3

PC1

PC2

PC3

PS1

PS2

PS3

AG2_OTU_0036_411AG3_OTU_0020_402qINT.3_OTU_036_308AG3_OTU_0002_432IS6100_OTU_064_237qINT.3_OTU_005_269qINT.3_OTU_033_288AG3_OTU_0070_364IS6100_OTU_060_250IS4_OTU_0045_265qINT.3_OTU_022_306qINT.3_OTU_019_301qINT.3_OTU_053_276IS26_OTU_031_408IS6100_OTU_014_257tet9_OTU_054_203IS26_OTU_029_415sul2_OTU_0005_360dfrA1_OTU_009_206IS26_OTU_011_381dfrA1_OTU_014_165IS26_OTU_005_372qac_OTU_021_302AG2_OTU_0010_373IS26_OTU_021_373AG3_OTU_0035_352qac_OTU_040_301qINT.3_OTU_011_313tet9_OTU_040_228qac_OTU_043_326AG3_OTU_0045_413IS6100_OTU_008_229IS6100_OTU_027_233tet9_OTU_023_253AG3_OTU_0026_394AG2_OTU_0002_391IS6100_OTU_006_278qINT.3_OTU_003_266qac_OTU_022_397IS6100_OTU_055_240AG3_OTU_0069_399tet9_OTU_079_254AG3_OTU_0006_449IS26_OTU_032_387IS26_OTU_009_390tet5_OTU_0050_373AG4_OTU_0472_207AG9_OTU_055_244AG9_OTU_023_256tet9_OTU_045_202is1216_OTU_012_192tet9_OTU_032_303AG3_OTU_0033_345qINT.3_OTU_002_292IS6100_OTU_003_241IS6100_OTU_043_195tet9_OTU_010_247qINT.3_OTU_042_318AG4_OTU_0469_275qINT.3_OTU_004_365qac_OTU_034_432AG3_OTU_0019_512AG9_OTU_010_332AG7_OTU_0024_323qac_OTU_019_347qINT.3_OTU_021_328AG3_OTU_0027_451IS26_OTU_003_491qINT.3_OTU_012_411qac_OTU_005_411dfrA1_OTU_015_288tet9_OTU_067_365sul2_OTU_0026_343sul2_OTU_0024_369sul2_OTU_0010_351sul2_OTU_0006_333IS6100_OTU_009_210AG3_OTU_0063_372dfrA1_OTU_043_189AG9_OTU_027_254IS26_OTU_066_392AG2_OTU_0006_338AG4_OTU_0421_253AG4_OTU_0197_869IS26_OTU_027_473AG6_OTU_0080_629AG6_OTU_0003_718AG6_OTU_0042_602IS26_OTU_035_371AG6_OTU_0025_650AG9_OTU_007_279AG6_OTU_0013_595AG6_OTU_0026_677AG6_OTU_0001_699AG9_OTU_022_261AG6_OTU_0005_777AG6_OTU_0016_590AG9_OTU_021_216IS26_OTU_010_399dfrA1_OTU_069_153tet1_OTU_0205_293tet5_OTU_0009_450AG6_OTU_0012_864AG6_OTU_0019_998AG6_OTU_0031_1073tet5_OTU_0001_467AG6_OTU_0004_681CHL1_OTU_031_166CHL1_OTU_022_177CHL1_OTU_026_234CHL1_OTU_009_232CHL1_OTU_030_207tet1_OTU_0269_386tet1_OTU_0203_402AG9_OTU_001_371is1216_OTU_027_177AG9_OTU_047_251AG9_OTU_004_289IS4_OTU_0004_258IS4_OTU_0013_320IS4_OTU_0003_271tet1_OTU_0271_274tet1_OTU_0265_297tet2_OTU_0030_352tet2_OTU_0019_383tet2_OTU_0077_315tet2_OTU_0014_853tet2_OTU_0062_318tet2_OTU_0024_298tet2_OTU_0057_300AG9_OTU_037_262IS4_OTU_0033_283tet10_OTU_127_296tet1_OTU_0241_387AG6_OTU_0152_659mefA_OTU_1233_782tet1_OTU_0692_314tet1_OTU_0578_3063tet1_OTU_0003_550qINT.3_OTU_007_330IS26_OTU_019_383tet9_OTU_072_291is1216_OTU_043_223IS4_OTU_0002_273tet9_OTU_059_219AG3_OTU_0012_509tet4_OTU_023_337tet4_OTU_012_363tet4_OTU_034_386tet4_OTU_039_388tet4_OTU_009_4144tet4_OTU_028_333tet4_OTU_026_346tet4_OTU_010_348tet4_OTU_007_422CHL1_OTU_020_184tet4_OTU_032_328CHL1_OTU_017_198CHL1_OTU_023_190CHL1_OTU_051_181CHL1_OTU_034_187CHL1_OTU_043_161tet4_OTU_053_330CHL1_OTU_021_214CHL1_OTU_042_223CHL1_OTU_025_151dfra2_OTU_000_113AG1_OTU_058_149AG1_OTU_017_232AG1_OTU_005_153AG5_OTU_017_126AG5_OTU_005_139sul2_OTU_0053_2646dfra2_OTU_030_61dfra2_OTU_015_77tet2_OTU_0002_338tet2_OTU_0007_387tet3_OTU_0002_38959tet8_OTU_0002_3895tet2_OTU_0005_8612tet2_OTU_0001_20063mefA_OTU_0951_19579tet1_OTU_0252_23738AG8_OTU_0000_53087dfra2_OTU_023_107dfra2_OTU_031_124dfra2_OTU_016_85dfra2_OTU_004_88dfra2_OTU_005_127tet10_OTU_001_10703dfra2_OTU_026_70dfra2_OTU_010_159dfra2_OTU_019_86tet1_OTU_0278_5767tet5_OTU_0144_514AG4_OTU_0063_1406AG4_OTU_0018_206Tn23_OTU_022_169is1216_OTU_090_202dfra2_OTU_012_90dfra2_OTU_013_89IncW_OTU_0001_36993AG2_OTU_0075_656IS613_OTU_0009_29731tnpA_OTU_000_31244Tn23_OTU_038_146Tn23_OTU_020_220Tn23_OTU_013_208Tn23_OTU_021_136Tn23_OTU_045_143Tn23_OTU_089_140Tn23_OTU_047_153Tn23_OTU_006_195Tn23_OTU_008_184Tn23_OTU_026_133Tn23_OTU_059_165AG8_OTU_0012_200AG8_OTU_0011_551AG4_OTU_0014_243IncN_OTU_1759_25082AG7_OTU_0043_844tet6_OTU_001_72686AG10_OTU_002_67731IncW_OTU_0066_123IncW_OTU_0131_137IncW_OTU_0152_118IncW_OTU_0061_117IncW_OTU_0122_114IncW_OTU_0114_141IncW_OTU_0151_128IncW_OTU_0162_421IncW_OTU_0008_811IncW_OTU_0069_116IncW_OTU_0225_163tnpA_OTU_056_410dfrA1_OTU_011_1949mefA_OTU_0121_573ILMA_OTU_01472_786IncW_OTU_0040_381IncP_OTU_0032_825AG8_OTU_0105_4053tet10_OTU_112_187tet7_OTU_0012_1203AG1_OTU_013_179tet7_OTU_0007_2652AG1_OTU_002_4023tet7_OTU_0232_101tet8_OTU_0452_746tet7_OTU_0327_140tet7_OTU_0042_154tet7_OTU_0008_926tet8_OTU_0001_1434tet7_OTU_0024_1782IncW_OTU_0034_171IncP_OTU_0002_3852AG4_OTU_0084_518tet7_OTU_0010_3721tet7_OTU_0034_287tet7_OTU_0240_107AG5_OTU_010_189AG5_OTU_011_190AG5_OTU_002_201AG5_OTU_009_217AG5_OTU_023_238AG5_OTU_003_155AG5_OTU_035_230AG5_OTU_051_168AG5_OTU_015_128AG5_OTU_056_170AG1_OTU_003_157AG1_OTU_060_156AG1_OTU_049_166tet10_OTU_073_179AG1_OTU_008_140AG1_OTU_054_162AG1_OTU_020_173AG1_OTU_076_190AG1_OTU_077_192AG1_OTU_001_226dfrA1_OTU_016_171dfrA1_OTU_018_180AG2_OTU_0043_340AG2_OTU_0090_1243tet8_OTU_0176_781tet8_OTU_0191_932tet8_OTU_0341_500tet8_OTU_0210_1235tet8_OTU_0110_8573mefA_OTU_0034_10700mefA_OTU_0282_3812tet8_OTU_0055_1256tet7_OTU_0149_393X16S_OTU_192_215qac_OTU_014_279qac_OTU_004_328is1216_OTU_032_167sul2_OTU_0013_326sul2_OTU_0034_374qac_OTU_012_307qac_OTU_008_312sul2_OTU_0017_306sul2_OTU_0043_342AG2_OTU_0030_436AG2_OTU_0039_472is1216_OTU_009_181IS4_OTU_0007_296qac_OTU_003_402sul2_OTU_0032_462tet9_OTU_021_255qac_OTU_042_336IS6100_OTU_018_340AG2_OTU_0051_498IS6100_OTU_036_414is1216_OTU_007_306IS26_OTU_042_565is1216_OTU_017_194sul2_OTU_0020_458is1216_OTU_025_242AG7_OTU_0037_319AG2_OTU_0050_374sul2_OTU_0011_419AG2_OTU_0044_554qac_OTU_038_292IS6100_OTU_029_268is1216_OTU_006_182is1216_OTU_019_259tet9_OTU_016_239tet9_OTU_013_195AG10_OTU_227_332AG10_OTU_222_300AG10_OTU_220_212tet10_OTU_067_160tet10_OTU_087_244tet10_OTU_111_250tet10_OTU_100_193tet10_OTU_096_402tet10_OTU_085_177tet10_OTU_082_162tet1_OTU_0382_278sul2_OTU_0052_367AG10_OTU_217_201IS6100_OTU_067_213AG10_OTU_280_252AG9_OTU_034_269IS4_OTU_0042_344AG7_OTU_0006_352IS4_OTU_0088_306AG7_OTU_0030_325AG7_OTU_0051_294is1216_OTU_002_258is1216_OTU_013_184AG3_OTU_0065_339AG7_OTU_0038_472AG7_OTU_0001_317X16S_OTU_014_565AG9_OTU_043_215dfrA1_OTU_010_192dfrA1_OTU_061_151IS4_OTU_0001_407dfrA1_OTU_038_186X16S_OTU_019_1300AG9_OTU_029_230IS4_OTU_0029_256AG7_OTU_0005_367AG7_OTU_0019_300IS4_OTU_0037_289AG7_OTU_0053_407IS4_OTU_0025_261AG4_OTU_0001_211tet4_OTU_047_362X16S_OTU_033_144tet10_OTU_097_166tet10_OTU_122_181tet10_OTU_103_164AG5_OTU_040_137AG4_OTU_0035_219X16S_OTU_050_258AG4_OTU_0098_745mefA_OTU_0071_15229AG8_OTU_0039_32404mefA_OTU_0000_137471dfra2_OTU_001_37786Tn23_OTU_000_50722IncN_OTU_0001_73797Tn21_OTU_000_23582tet4_OTU_002_14530tet3_OTU_0001_47127AG7_OTU_0103_308X16S_OTU_007_253AG7_OTU_0046_315X16S_OTU_010_417X16S_OTU_001_4276X16S_OTU_037_2335X16S_OTU_000_64949AG9_OTU_000_101290tet4_OTU_000_124412sul2_OTU_0000_133284AG10_OTU_091_54305AG6_OTU_0000_236839AG3_OTU_0000_139305IS6100_OTU_001_99440IS26_OTU_000_142450tet9_OTU_000_91714IS4_OTU_0000_97897tet5_OTU_0000_114770dfrA1_OTU_000_61459AG2_OTU_0000_143382AG5_OTU_000_49696tet8_OTU_0000_31950AG2_OTU_0024_4531AG2_OTU_0004_395CHL1_OTU_000_70169qac_OTU_000_113511AG4_OTU_0002_68636AG7_OTU_0000_106398is1216_OTU_001_68327tet7_OTU_0004_7401AG4_OTU_0000_55356tet1_OTU_0001_22800AG1_OTU_000_59698qINT.3_OTU_000_112559tet1_OTU_0000_78220dfrA1_OTU_005_157dfrA1_OTU_004_182AG4_OTU_0399_208dfrA1_OTU_003_4460tet10_OTU_000_62329tp614_OTU_0000_120359tet2_OTU_0000_100930tet8_OTU_0034_18627tet7_OTU_0002_16351IS613_OTU_0366_13919GapA.F_OTU_0000_145966tet3_OTU_0005_8110X16S_OTU_038_745X16S_OTU_042_845GapA.F_OTU_0007_582GapA.F_OTU_0069_513GapA.F_OTU_0018_432GapA.F_OTU_0089_438GapA.F_OTU_0031_444GapA.F_OTU_0027_462GapA.F_OTU_0048_476GapA.F_OTU_0054_470GapA.F_OTU_0056_609GapA.F_OTU_0172_551GapA.F_OTU_0009_450GapA.F_OTU_0113_437IncN_OTU_0007_313IncN_OTU_0023_228IncN_OTU_0123_260IncN_OTU_0060_245tp614_OTU_0053_318IncN_OTU_0049_294IncN_OTU_0108_256IncN_OTU_0236_1238tp614_OTU_0016_343tp614_OTU_0010_323tp614_OTU_0020_327tp614_OTU_0039_305tp614_OTU_0071_296tp614_OTU_0003_303tp614_OTU_0109_350tp614_OTU_0005_593tp614_OTU_0029_300tp614_OTU_0077_415tp614_OTU_0006_12571AG8_OTU_0231_211AG8_OTU_0441_274AG8_OTU_0435_264Tn21_OTU_031_108Tn21_OTU_014_46Tn21_OTU_008_66Tn21_OTU_013_86Tn21_OTU_012_58Tn21_OTU_011_52Tn21_OTU_019_54Tn21_OTU_057_59Tn21_OTU_030_77tet5_OTU_0002_571Tn21_OTU_023_68Tn21_OTU_069_60Tn21_OTU_003_65tet2_OTU_0070_337Tn21_OTU_009_115tet6_OTU_050_224tet6_OTU_003_396tet6_OTU_065_198tet6_OTU_023_222tet6_OTU_040_281tet6_OTU_006_216tet6_OTU_045_183tet6_OTU_015_188tet6_OTU_005_199tet6_OTU_021_296tet6_OTU_056_190tet6_OTU_008_4647tnpA_OTU_029_99tnpA_OTU_035_108tnpA_OTU_047_165tnpA_OTU_088_139tnpA_OTU_040_126tnpA_OTU_012_117tnpA_OTU_013_176mefA_OTU_2454_666mefA_OTU_1414_7479tnpA_OTU_023_211IncN_OTU_0100_255IncN_OTU_0036_242IncN_OTU_0253_1327IncN_OTU_0090_233IncN_OTU_0017_262tet6_OTU_025_253AG8_OTU_0004_219AG8_OTU_0044_250Tn23_OTU_053_455AG8_OTU_0098_233tet3_OTU_0056_2050mefA_OTU_0126_931tp614_OTU_0346_1757IS613_OTU_0015_2788AG8_OTU_0022_223AG8_OTU_0002_196AG8_OTU_0051_189IncN_OTU_0002_328GapA.F_OTU_0111_883AG8_OTU_0081_195tnpA_OTU_003_1136Tn23_OTU_205_373tnpA_OTU_157_302tnpA_OTU_090_570IncP_OTU_0000_2904ILMA_OTU_06873_323IS613_OTU_0036_4977tet3_OTU_0006_1908tet3_OTU_0015_1162tet3_OTU_0003_1462tet5_OTU_0003_1970tet5_OTU_0075_949tet5_OTU_0010_761Tn21_OTU_010_69tet3_OTU_0011_1778IS613_OTU_1637_368IS613_OTU_0339_380dfra2_OTU_021_74tet1_OTU_0009_290ILMA_OTU_02617_777tet3_OTU_0031_1861tet3_OTU_0050_1469tet3_OTU_0016_2145tet4_OTU_008_620tet3_OTU_0009_969tet5_OTU_0005_9848tet3_OTU_0052_1409tet2_OTU_0004_4858is1216_OTU_171_322mefA_OTU_0041_568tet3_OTU_0004_16405AG5_OTU_001_6133ILMA_OTU_00000_308ILMA_OTU_00633_240ILMA_OTU_00183_518tnpA_OTU_005_101IncP_OTU_1088_660IncP_OTU_0001_548IncP_OTU_1384_600GapA.F_OTU_5528_2015IncP_OTU_0004_528IncP_OTU_0807_352ILMA_OTU_00742_321ILMA_OTU_00001_1402ILMA_OTU_30002_303AG7_OTU_0296_913IncP_OTU_0826_1059IS613_OTU_0021_632tp614_OTU_0235_351ILMA_OTU_00935_800IncP_OTU_0542_377AG4_OTU_0706_580mefA_OTU_2529_952IncW_OTU_0003_1350tnpA_OTU_004_316ILMA_OTU_17773_295ILMA_OTU_17867_250IncP_OTU_0043_522X16S_OTU_226_362mefA_OTU_3811_3455mefA_OTU_5205_816IncP_OTU_0895_748IncP_OTU_0164_351IncP_OTU_0747_1240IncP_OTU_0003_1046tet8_OTU_0968_419tet7_OTU_0101_251IS4_OTU_0817_330tet6_OTU_093_3645AG10_OTU_051_220AG10_OTU_005_232AG10_OTU_046_247AG10_OTU_027_206AG10_OTU_008_221tet5_OTU_0004_627mefA_OTU_1379_966tet5_OTU_0019_1669AG10_OTU_060_222AG10_OTU_013_250AG10_OTU_053_208tet5_OTU_0091_497tet5_OTU_0024_462tet3_OTU_0087_895tet5_OTU_0015_2209IS613_OTU_0001_9580X16S_OTU_006_462IS613_OTU_0012_1839IS613_OTU_0007_5099IS613_OTU_0018_3195IS613_OTU_0006_3739IS613_OTU_0000_29617tet8_OTU_3831_1620ILMA_OTU_00686_597IS613_OTU_0054_8962ILMA_OTU_00012_742tet8_OTU_1476_1884X16S_OTU_002_717ILMA_OTU_00959_686tet8_OTU_0169_495tet7_OTU_0005_3821tet9_OTU_049_268tet2_OTU_0003_330IS613_OTU_1603_611

−10 −8 −6 −4 −2 0Value

Color Key

ARG  allele  percentage  0.1      0.4    1.5        6          25      100  

 PS  PC  PM  JS  JC  JM  BS  BC  BM  Cntl  Soil  

Ref  

•  90%  of  the  125,000  intl!  sequences  were  iden:cal  in  both  USA  and  China  pig  samples.  •The  next  highest  variant  was    only  0.3%  

1            15  

Page 8: Antibiotics and their Resistance Gene Path to Humans

Are  an#bio#c  resistances  in  non-­‐an#bio#c  exposed  animals?  

•  A  baby  mammoth  Lluba  discovered  in  a  frozen  bog  is      one  of  the  best  preserved  mammoths  ever  found.  •  Lived  41,800  years  ago  •  We  sampled  along  the  gut  for  resistance  genes.  

•  Feral  pigs  from  South  Carolina  barrier  islands.      

Two  cases:  

Page 9: Antibiotics and their Resistance Gene Path to Humans

Waking  Lyuba,  the  Baby  Mammoth,  aBer  41,800  years  

She  was  found  by  a  reindeer  breeder  and  herder  in  2007  on  the  Yamal  Peninsula  of  Arc#c  Russia  

Dan  Fisher,  U  of  Michigan  

Page 10: Antibiotics and their Resistance Gene Path to Humans

Lyuba  in  the  Laboratory  

Lyuba  was  only  30  days  old,  about  110  lbs  when  she  died  of  suffoca#on  in  mud.  She  had  milk  and  fecal  mager,  presumably  from  her  mother,  in  her  stomach  

Page 11: Antibiotics and their Resistance Gene Path to Humans

Dissec#ng  Lyuba’s  gut  

Page 12: Antibiotics and their Resistance Gene Path to Humans

Does  she  have  an#bio#c  resistance  genes?  

Page 13: Antibiotics and their Resistance Gene Path to Humans

S1

S2

S2_PS3

S4

S5

L6

Streptomyces_antibiotics_ATP-binding-protein_oleC_1000

Multi_genera_acrAB_triclosan-resis_1of2_1000

Plasmid_pIM13_ermIM_methylase_1000

Escherichia_coli_uidA_F1, R2

Streptomyces_venezuelae_erm30_pikR2_methylt_1001

mdth_10of72

emrD_18of64

Streptococcus_agalactiae_LnuC_1001

Multi_genera_tetracycline-resistance_tet4_3of25_1003

tolC_8of66

Multi_genera_Beta-lactamase-C-penicillin_beta-blaCMY_32of82_F1002

Neisseria_meningitidis_Z2491_MC58_FAM18_mtrD_drug-efflux4of4_1001

Multi_genera_blaCTX_5of43_1000

Multi_genera_chloramphenicol-resistance_chlo-rarD_9of12_1001

Staph_aureus_qacB_2_1000

Salmonella_sp_acridine_efflux-pump_1of3_1001

Multi_genera_vgaB_1000

Vibrio_sp._no6_tet(34)_tet-resis-determinant_1000

Multi_genera_Tetracycline-resistance_tet_4of74(2)_1004

bl2_len_146of172

Mulgi_genera_tetD_2_1000

oprJ_2of6

Camplyobacter_spp_streptothricine-acetyl-transferase_acety-sat_3_1002

Multi_genera_tetG_4of4_1000

tolC_7of66

Multi_genera_SHV-beta-lactamase_bet-blaSHV_4of94_1002

Plasmid_pNG2_ermCD_erythromycin-resistance_1001

Multi_genera_erythromycin-res_mphA_1of2_1000

vanYD_2of6

bl2be_oxy1_32of59

aac3iv_4of6

Multi_genera_transposase_beta-tnpA_2of23_1001

Multi_genera_transposase_bet-tnpA_20of30_1001

Multi_genera_streptomycin-resistance_strB_9_F1002

Pseudomonas_entomophila_L48_TtgA_efflux_3of3_1002

oprD_5of7

Salmonella_sp_acridine_efflux-pump_2of3_1000

Mycobacterium_tuberculosis_pyrazinamidase_pyaz-pncA_26_1000

Multi_genera_Beta-lactamase- C-penicillin_beta-blaCMY_5of82_1001

pbp2b(penA)_98of99

Pseudomonas_spp_mexF_1of2_1001

Multi_genera_AAC-3-VI_gent-aac4_2_1001

Multi_genera_Beta-lactamase-C-penicillin_beta-blaCMY_6of82(2)_1000

Enterococcus_spp_vanC_1000

vanC,  fox5,  aacC,  mexF,  penA,  blaCMY2,  pncA,  acrA,  oprD    

^gA,  strB,  Tn24,  Tn22,  aacC4,  blaOXY    

vanYD,  mphA,  ermX,  blaTEM,  tolC,  tetG,  sat4,  oprJ    

tetD,  blaSHV,  tetD,  tet(34),  vgaB    

acrA,  qacA,  rarD,  blaCTX-­‐M    

mtrD    

blaCMY2,  tolC,  tetR,  lnuC,  emrD    

yceL/mdtH,  pikR2,  uidA,  plasmid?,  acrR,  oleC    

Genes   GENERAL  TREND  

BETA  LACTAMASE  RND  EFFLUX  

TRANSPOSASE  BL,  RND,  AG  

RND  EFFLUX  MLSB  

TET  EFFLUX  

EFFLUX  

RND  EFFLUX  

EFFLUX,  BL,  TET,  MLSB  

EFFLUX,  MLSB  

S  =  small  intes#ne  L  =  large  intes#ne  

RND  =  mul#drug  efflux  pumps;  BL  =  beta  lactam;  AG  =  aminoglycoside,  MLSB  =  macrolide,  licosamide,  and  streptogramin  B;  TET  =  tetracycline  resistances.    The  presence  of  these  genes  needs  to  be  confirmed  via  sequencing,  especially  vanC.  

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Are  an#bio#c  resistances  in  non-­‐an#bio#c  exposed  animals?  

•  In  baby  mammoth  Lluba  who  lived  41,800  years  ago  •  Feral  pigs  from  South  Carolina  barrier  islands.  

             Intl1  not  detected  in  either  sample!      But  in  all  samples  from  Iowa  and  Chinese  pigs,      and  with  no  SNPs  

   

Two  cases:  

Super  car  is  already  in  acfon  globally  

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What  are  the  Environmental  Issues  ?  

•  Are  the  an#bio#c  resistances  genes  linked  to  mobile      gene#c  elements?  

 •  Are  mul#ple  resistance  traits  also  linked?  

•  Important  to  co-­‐selec#on  •  Important  to  risk  for  spread  of  mul#-­‐drug  resistances  

   (are  we  building  the  super  drug  resistance  microbes)    

•  This  is  a  global  issue  (obvious)  •  Spread  of  Chinese-­‐style  facili#es  •  An#bio#c  produc#on  facili#es  •  Un-­‐  or  poorly-­‐  regulated  use,  disposal,  and  human  food  chain  

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What  are  the  MSU  Resources  for  ARG  Studies?  

•  300  Plus  an#bio#c  resistance  primers  pairs,  validated  •  Expanding  mobile  gene#c  element  (MGE)  primer  pairs  •  Virulence  and  marker  gene#cs  for  targeted  pathogens  •  Wafergen,  highly  parallel  qPCR,system,  5186  assays/chip  

For  quan#ta#on  of  ARGs:  (Hashsham,  Stedfeldt,  Tiedje)  

Database  of  ARG  genes:  (  Cole,  Tiedje)  •  Monthly  HMM  search  of  GenBank  (by  RDP)  •  Joint  project  with  U  of  Hong  Kong  on  structured  ARG  DB  State-­‐of-­‐art  analy#cal  methods,  LC-­‐MS-­‐MS  for  quan#ta#on  

   of  pharmaceu#cals.  (Liu)  

Developing  sequenced-­‐based  tracking  of  ARGs:  (Stedfeldt,  RTSF)