Stimulation of conidiation by derivatives of cAMP inTrichoderma viride

Derivatives of cyclic-3′,5′-adenosine monophosphate, N6,2′-O-dibutyryl-cAMP, 8-(chlorophenylthio)-cAMP and 8-bromoadenosine-cAMP added at 0.1–10 μmol/L concentrations into the growth medium have markedly stimulated conidiation inTrichoderma viride. Their stimulatory effect on conidiation was best ob...

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Bibliographic Details
Published in:Folia microbiologica 1998-08, Vol.43 (4), p.399-402
Main Authors: Nemcovic, M, Farkas, V
Format: Article
Language:English
Subjects:
Adenosine monophosphate
Colonies
Cyclic AMP
Cyclic nucleotides
Glucose
Nucleotides
Stimulation
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Summary:Derivatives of cyclic-3′,5′-adenosine monophosphate, N6,2′-O-dibutyryl-cAMP, 8-(chlorophenylthio)-cAMP and 8-bromoadenosine-cAMP added at 0.1–10 μmol/L concentrations into the growth medium have markedly stimulated conidiation inTrichoderma viride. Their stimulatory effect on conidiation was best observed in colonies that were constantly kept in the dark but was also marked in colonies illuminated by sub-saturating doses of light. The relative stimulation of conidiation depended not only on the concentration of exogenous cyclic nucleotides but also on the concentration of glucose in the medium. It was more pronounced in glucose-rich media than in media where the concentration of the sugar was low. Concentrations of cAMP analogues equal to 50 μmol/L and higher inhibited the conidiation.
ISSN:0015-5632
1874-9356
DOI:10.1007/BF02818580