1 Deuteromycota Deuteromycota Phylum: Deuteromycota Phylum: Deuteromycota Commonly referred to as the FungiImperfectior imperfect fungi. Classification based on asexual stage because: Sexual reproduction rare, occurs only in narrow environmental parameters. Sexual phase of life cycle no longer exist. Phylum: Deuteromycota Phylum: Deuteromycota Only asexual reproduction occurs, typically conidia conidia borne on conidiophores conidiophores. Classified according to conidia color, shape, size and number of septa. Form Form taxon taxon: An artificial classification scheme. When sexual reproduction discovered, usually an Ascomycota or less often Basidiomycota. Phylum: Deuteromycota Phylum: Deuteromycota When mycelial septate. Thallus also may be yeast or dimorphic. When sexual reproduction discovered, usually an Ascomycota or less often Basidiomycota. Purpose of Deuteromycota Purpose of Deuteromycota Division was erected to a ccommodate conidia producing fungi with unknown sexual cycle. When sexual stage discovered, species would be reclassified according to sexual stage. In practice this concept did not work. Purpose of Deuteromycota Purpose of Deuteromycota Instead, recall example of Emericellavariecolor(=Asperg illus varieco lor). Emericella variecolor, the sexual stage is the telomorph telomorph. Asperg illus variecolor, the asexual stage is the anamorph anamorph. Thus, sexual stage is often present.
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DeuteromycotaDeuteromycota Phylum: DeuteromycotaPhylum: DeuteromycotaCommonly referred to as the Fungi Imperfecti or imperfect fungi.
Classification based on asexual stagebecause:
Sexual reproduction rare, occurs onlyin narrow environmental parameters.Sexual phase of life cycle no longerexist.
Phylum: DeuteromycotaPhylum: Deuteromycota
Only asexual reproduction occurs,typically conidiaconidia borne onconidiophoresconidiophores.Classified according to conidia color,shape, size and number of septa.FormForm taxontaxon:: An artificial classificationscheme.When sexual reproduction discovered,usually an Ascomycota or less often
Basidiomycota.
Phylum: DeuteromycotaPhylum: Deuteromycota
When mycelial septate.
Thallus also may be yeast or dimorphic.
When sexual reproduction discovered,usually an Ascomycota or less oftenBasidiomycota.
Purpose of DeuteromycotaPurpose of Deuteromycota
Division was erected to accommodateconidia producing fungi with unknownsexual cycle.
When sexual stage discovered,species would be reclassifiedaccording to sexual stage.
In practice this concept did not work.
Purpose of DeuteromycotaPurpose of Deuteromycota
Instead, recall example of Emericella variecolor (=Aspergillus variecolor ).
Emericella variecolor , the sexual
stage is the telomorphtelomorph.Aspergillus variecolor , the asexualstage is the anamorphanamorph.
The frequency of genetically,recombined, haploid nuclei formedwas very low.Many mycologist feel that this ismerely a laboratory phenomenon anddoes not play an important role innature.How else can we explain the successof the Deuteromycota in nature?