Evaluation of Some Morphological Features of Asymmetric Penicillia on Different Media
Isolates of 10 species of Sect. Asymmetrica of the genus Penicillium were cultivated on three nutrient agar media: Czapek, Potato-carrot agar and synthetic nutrient agar(SNA). Morphological features of the conidiophores during their development were followed directly in petri dishes. In all isolates studied, the beginning of conidiophore development has common characteristics and its final structure on all media used corresponds to the taxonomical classification of each species. Variability of the penicillus within a species frame corresponds to various stages of its individual development. The structure of the conidiophores could be best followed on Potato-carrot agar. When investigating the formation of the conidiophore in Penicillium soppii on this medium an abnormal form of the primary conidiogenous cell was observed, from which several chains of conidia were simultaneously produced, in a manner similar to a polyblastic phialide.
KeywordsConidiogenous Cell Nutrient Agar Medium Mutagenic Treatment Ontogenic Development Wall Texture
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