Journal
COMPTES RENDUS BIOLOGIES
Volume 337, Issue 1, Pages 29-43Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crvi.2013.10.010
Keywords
bZIP; AP-1-like transcription factor; Yap transcription factor; Temperature adaptation; Mushroom
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Funding
- CONACYT, Mexico
- ECOS-Nord-ANUIS committee, Action [M06A01]
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The structure, homologies, polymorphism and expression profiles of a new gene, aap1, have been studied for precisely characterizing it and defining its putative involvement in thermo-tolerance of both vegetative mycelium growth and sporophore differentiation. Sequence polymorphism was analyzed in 3 homokaryons of A. bisporus and 24 strains having different abilities for mycelial growth at temperatures above 30 degrees C and for producing mature fruiting bodies at 25 degrees C. The level of gene expression was measured by real-time PCR both in vegetative mycelium after transfer from 25 to 32 degrees C and in primordia and fruiting bodies produced during cultures at 17 or 25 degrees C. The results indicated that aap1 gene belong to a new subfamily of the yeast YAP1 homologs. It is not a dominant contributor to the thermo-tolerance of A. bisporus, but the protein it encodes may be involved as an overall stress resistance transcription factor. The way Aap1 senses redox level differs from that of AP-1-like transcription factor Yap1. (C) 2013 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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