Eukaryotic cell

Separate circadian clock signals help control daily spore development in Neurospora crassa

Circadian Biology Weekly Brief ↗PubMed ↗DOI ↗

Updated

Abstract

The endogenous circadian clock regulates daily rhythms in gene expression related to asexual spore development in Neurospora crassa.

  • Conidiation can be induced by various environmental signals or may occur rhythmically under constant conditions due to the circadian clock.
  • The rhythmic expression of the fl gene is dependent on the presence of the ACON-2 protein.
  • Clock regulation of the eas (ccg-2) gene remains unaffected in an fl mutant strain.
  • The expression of ccg-1 is rhythmic in an acon-2 mutant strain, indicating independent regulatory pathways.
  • These findings suggest that the circadian clock and environmental cues operate through distinct mechanisms to control gene expression related to conidiation.

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