title: Control of Neurospora crassa morphology by cyclic adenosine 3', 5'-monophosphate and dibutyryl cyclic adenosine 3', 5'-monophosphate.
abstract: The role of cyclic adenosine 3', 5'-monophosphate (cyclic AMP) in the control of the Neurospora asexual life cycle was studied. Endogenous cyclic AMP levels were 10 to 20 times higher in strains having the wild-type cr-1 allele than in those carrying the mutated allele. In a wild-type strain these levels remained constant throughtout the entire growth period in shaken liquid cultures, except during a short period at the beginning of the stationary growth phase. In this period a marked increase in the cyclic nucleotide level was observed. The culture of cr-1 mutant strains in the presence of cyclic AMP or its dibutyryl derivative restores some morphological properties characteristic of wild-type strains. Specifically these cyclic nucleotides stimulated the rate of mycelial elongation, as well as the differentiation of aerial hyphae.
mesh_terms: D000262:Adenylyl Cyclases / Q000378:metabolism; D000483:Alleles; D003994:Bucladesine / Q000494:pharmacology*; D000242:Cyclic AMP / Q000378:metabolism / Q000494:pharmacology*; D009154:Mutation; D009491:Neurospora / Q000166:cytology*; D009492:Neurospora crassa / Q000166:cytology* / Q000254:growth & development / Q000378:metabolism; D010727:Phosphoric Diester Hydrolases / Q000378:metabolism
chemical_list: D003994:Bucladesine; D000242:Cyclic AMP; D010727:Phosphoric Diester Hydrolases; D000262:Adenylyl Cyclases