Genetic Dissection of Quantitative Disease Resistance in Maize Southern Leaf Blight Cochliobolus heterostrophus Gray Leaf Spot Cercospora zeae-maydis Aspergillus Ear Rot Aspergillus flavus Common Rust Puccinia sorghi Jesse A. Poland 1 , Chialin Chung 1 , Randall J. Wisser 2 , Peter J. Balint-Kurti 2 , Kristen L. Kump 2 , Jacqueline M. Benson 1 , Judith M. Kolkman 1 , Erik L. Stromberg 3 The Maize Diversity Project 1,2,4,5,6,7,8 , Rebecca J. Nelson 1 1 Cornell University, Ithaca, NY 2 North Carolina State University, Raleigh, NC 3 Virginia Polytechnic Institute and State University, Blacksburg, VA 4 Cold Spring Harbor Laboratory, NY 5 University of California-Irvine 6 USDA-Agricultural Research Service 7 University of Missouri, Columbia, MO 8 University of Wisconsin, Madison, WI Anthracnose Stalk Rot Colletotrichum graminicola Northern Leaf Blight Exheriohilum turcicum Presented at Generation Challenge Program Workshop, Plant and Animal Genome, Jan. 12, 2009
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Genetic Dissection of Quantitative Disease Resistance in Maize
Southern Leaf BlightCochliobolus heterostrophus
Gray Leaf SpotCercospora zeae-maydis
Aspergillus Ear RotAspergillus flavus
Common RustPuccinia sorghi
Jesse A. Poland1, Chialin Chung1, Randall J. Wisser2, Peter J. Balint-Kurti2,Kristen L. Kump2, Jacqueline M. Benson1, Judith M. Kolkman1, Erik L. Stromberg3
The Maize Diversity Project 1,2,4,5,6,7,8, Rebecca J. Nelson1
1Cornell University, Ithaca, NY2North Carolina State University, Raleigh, NC3Virginia Polytechnic Institute and State University, Blacksburg, VA4Cold Spring Harbor Laboratory, NY5University of California-Irvine 6USDA-Agricultural Research Service7University of Missouri, Columbia, MO 8University of Wisconsin, Madison, WI
Anthracnose Stalk RotColletotrichumgraminicola
Northern Leaf BlightExheriohilum turcicum
Presented at Generation Challenge Program Workshop, Plant and Animal Genome, Jan. 12, 2009
Resistant, Susceptible, and shades of gray…
Ph
en
oty
pe
Interaction
R
S
Specific General
Non-hostGene-
for-gene
Ph
en
oty
pe
Interaction
R
S
Specific General
Non-hostGene-
for-gene
Nested Association
Mapping
Near-Isogenic Lines
Selection Mapping
Research Approach: Genetic Platforms
Maize Diversity
Panel
Ph
en
oty
pe
Interaction
R
S
Specific General
Non-hostGene-
for-gene
Nested Association
Mapping
Near-Isogenic Lines
Selection Mapping
Alle
lic D
ive
rsit
y
Phenotyping Power
Maize Diversity
Panel
Utility of Genetic Platforms
Nested Association
Mapping
Alle
lic D
ive
rsit
y
Phenotyping Power
Maize Diversity
Panel
Near-Isogenic Lines
Selection Mapping
uniform backgrounddetailed phenotyping
diversity high resolutionenrichment for
resistance allelesbreeding material
power!resolution
Utility of Genetic Platforms
1 2 3 4 5 6 7 8
12
34
56
78
Gray Leaf Spot
So
uth
ern
L
ea
f B
lig
ht
0
0.4
0.8
1.2
1.6
2
2.4
2.8
3.2
3.6
4
No
rth
ern
L
ea
f B
lig
ht
So
uth
ern
Le
af B
lig
ht
No
rth
ern
Le
af B
lig
ht
Gray Leaf Spot
disease GLS NLB
SLB ***0.61 ***0.62
GLS - ***0.45
Evidence for Multiple Disease Resistance in the Maize Diversity Panel