Short-cycle conidiation in Aspergillus nidulans influence of glucose concentration and acetate or citrate supply.
This paper considers the effects of the reduction of the glucose concentration in the medium or of its substitution by intermediates closely related to the TCA cycle, namely acetate and citrate, on the balance between conidiation and mycelial growth in Aspergillus nidulans. It is shown that in conditions of extreme depletion of glucose in the medium, or in the presence of citrate as the only source of organic carbon, the reduction of mycelial growth proceeds to such as extent that conidiophores may be produced by conidia themselves or basal cells adjacent to them (short-cycle conidiation). Furthermore evidence is given that the depletion of the medium acts like a positive stimulus directly active in conidiation induction.
D000085:Acetates / Q000494:pharmacology*; D019342:Acetic Acid; D001233:Aspergillus nidulans / Q000187:drug effects / Q000254:growth & development*; D002951:Citrates / Q000494:pharmacology*; D019343:Citric Acid; D003470:Culture Media; D005947:Glucose / Q000494:pharmacology*; D013997:Time Factors
D000085:Acetates; D002951:Citrates; D003470:Culture Media; D019343:Citric Acid; D005947:Glucose; D019342:Acetic Acid