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Genome-wide expression analysis of dikaryotic colonies of Schizophyllum commune: wild-type, delta-hom2, delta-fst4

ABSTRACT: The transcription factors Hom2 and Fst4 were shown to be involved in mushroom development in the basidiomycete Schizophyllum commune. When the genes encoding Hom2 or Fst4 were deleted, no mushrooms formed. In this study we performed a genome-wide expression analysis on dikaryons of wild-type, delta-hom2 and delta-fst4.

ORGANISM(S): Schizophyllum commune

PROVIDER: GSE23594 | GEO | 2012/01/20

SECONDARY ACCESSION(S): PRJNA131733

REPOSITORIES: GEO

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Genome-wide expression analysis of dikaryotic colonies of Schizophyllum commune: wild-type, delta-hom2, delta-fst4

Project description:The transcription factors Hom2 and Fst4 were shown to be involved in mushroom development in the basidiomycete Schizophyllum commune. When the genes encoding Hom2 or Fst4 were deleted, no mushrooms formed. In this study we performed a genome-wide expression analysis on dikaryons of wild-type, delta-hom2 and delta-fst4. A total of three samples were analyzed. One wild-type and two deletion strains (delta-hom2 and delta-fst4)

2012-01-20 | E-GEOD-23594 | biostudies-arrayexpress

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Project description:The blue light receptor WC-2 was shown to be involved in mushroom development in the basidiomycete Schizophyllum commune. When the gene encoding WC-2 was deleted, no mushrooms formed and colony morphology was radial. This phenotype was similar to the wild-type colony grown in the dark. This phenotype could be complemented by transforming the wc-2 deletion strain with a construct encompassing the wc-2 coding sequence under the control of the heat inducible promoter hsp3. A daily heat shock of 1 hour at 42 degrees Celsius resulted in mushroom development and an asymmetrical colony. In this study we performed a genome-wide expression analysis on dikaryons of wild-type (not heat shocked), delta-wc2 (heat shocked or not heat shocked) and the complemented strain delta-wc2 hsp3-wc2 (heat shocked or not heat shocked).

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Genome-wide expression analysis of dikaryotic colonies of Schizophyllum commune under various conditions: wild-type, delta-wc2, delta-wc2 hsp3(pr)-wc2

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Project description:Intracellular signaling is conserved in eukaryotes to allow for response to extracellular signals and to regulate development and cellular functions. In fungi, inositol phosphate signaling has been shown to be involved in growth, sexual reproduction, and metabolic adaptation lacking, however, reports of mushroom forming fungi so far. In Schizophyllum commune, an inositol monophosphatase has been found up-regulated during sexual development. The enzyme is crucial for inositol cycling where it catalyzes the last step of inositol phosphate metabolism restoring the inositol pool from the monophosphorylated inositol monophosphate. We overexpressed the gene in this model basidiomycete and verified its involvement in cell wall integrity and intracellular trafficking. Strong phenotypes in mushroom formation and cell metabolism were evidenced by proteome analyses. In addition, altered inositol signaling was shown to be involved in tolerance towards cesium and zinc, and increased metal tolerance towards cadmium, associated with induced expression of kinases and repression of phosphatases within the inositol cycle. The presence of the heavy metals Sr, Cs, Cd, and Zn lowered intracellular calcium levels. We could develop a model integrating inositol signaling in the known signal transduction pathways governed by Ras, G-protein coupled receptors, cAMP and elucidate different roles in development.

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