• Deuteromycota Phylum: Deuteromycota


  •   
  • FileName: Lecture07.pdf [read-online]
    • Abstract: deuteromycota phylum: deuteromycotacommonly referred to as the fungiimperfecti or imperfect fungi.classification based on a***ual stagebecause:***ual reproduction rare, occurs only

Download the ebook

deuteromycota phylum: deuteromycota
commonly referred to as the fungi
imperfecti or imperfect fungi.
classification based on a***ual stage
because:
***ual reproduction rare, occurs only
in narrow environmental parameters.
***ual phase of life cycle no longer
exist.
phylum: deuteromycota phylum: deuteromycota
only a***ual reproduction occurs,
typically conidia borne on when mycelial septate.
conidiophores.
conidiophores thallus also may be yeast or dimorphic.
classified according to conidia color, when ***ual reproduction discovered,
shape, size and number of septa. usually an ascomycota or less often
form taxon: an artificial classification
taxon: basidiomycota.
scheme.
when ***ual reproduction discovered,
usually an ascomycota or less often
basidiomycota.
purpose of deuteromycota purpose of deuteromycota
division was erected to accommodate instead, recall example of emericella
conidia producing fungi with unknown variecolor (=aspergillus variecolor).
***ual cycle.
when ***ual stage discovered, emericella variecolor, the ***ual
species would be reclassified stage is the telomorph.
telomorph
according to ***ual stage. aspergillus variecolor, the a***ual
in practice this concept did not work. stage is the anamorph.
anamorph
thus, ***ual stage is often present.
1
defining taxa in deuteromycota
taxonomy of deuteromycota based
mostly on spore morphology
saccardoan system of spore saccardoan system of
classification.
classification
oldest system of defining taxa in spore classification.
fungi.
artificial means of classification.
no longer used in other taxa.
amerosporae: conidia one celled, didymosporae: conidia ovoid
sphaerical, ovoid to elongate or to oblong, one septate
short cylindric.
allantosporae:
conidia bean- hyalodidymospore:
shaped, hyaline conidia hyaline.
to dark. phaeodidymospore:
hyalosporae: conidia dark.
conidia hyaline
phaeosporae:
conidia dark.
phragmosporae: conidia oblong, dictyosporae: conidia ovoid to
two to many transverse septa oblong, transversely and
longitudinally septate.
hyalophramospore:
hyalophramospore
conidia hyaline. hyalodictyospore:
phaeophramospore:
phaeophramospore conidia hyaline.
conidia dark. phaeodictyospore:
conidia dark.
2
scolecosporae: conidia threadlike
to wormlike, septate or not, staurosporae: conidia stellate,
hyaline or dark septate or not, hyaline or dark
helicosporae: conidia helical, classification of deuteromycota
septate or not, hyaline or dark we will recognize a single class:
deuteromycetes, with four orders:
deuteromycetes
moniliales
sphaeropsidales
melanconiales
mycelia sterilis
moniliales moniliales
order: moniliales (alternaria tenuis)
conidia and conidiophores borne on
mycelium.
yeast or dimorphic.
not produce in pynidium or acervulus. conidium
conidiophore
3
moniliales moniliales
order: moniliales (alternaria tenuis) order: moniliales (sporobolomyces)
example of an a***ual yeast.
moniliales sphaeropsidales
order: moniliales (aureobasidium)
an example of a


Use: 0.0597