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. 2005 Dec 19:363:97-104.
doi: 10.1016/j.gene.2005.06.036. Epub 2005 Nov 9.

Enhancement of superficial pseudohyphal growth by overexpression of the SFG1 gene in yeast Saccharomyces cerevisiae

Atsushi Fujita  1 , Takatoshi Hiroko, Fumika Hiroko, Chitoshi Oka
Affiliations

Enhancement of superficial pseudohyphal growth by overexpression of the SFG1 gene in yeast Saccharomyces cerevisiae

Atsushi Fujita et al. Gene. .

Abstract

In response to nitrogen limitation, diploid yeast strains of Saccharomyces cerevisiae undergo a dimorphic transition to a filamentous growth form known as pseudohyphal growth. This developmental change can be classified into two distinct growing forms: invasive pseudohyphal growth and superficial pseudohyphal growth. We identified a yeast gene, SFG1, whose overexpression predominantly enhances superficial pseudohyphal growth when starved for nitrogen. Sfg1 has a sequence similarity to members of a family of transcriptional regulators of fungal development. Cells of a homozygous sfg1/sfg1 diploid strain have a serious defect in pseudohyphal growth, indicating that Sfg1 has an essential function for pseudohyphal development. Our analyses show that Sfg1 may act separately from mitogen-activated protein kinase (MAPK) pathway and cAMP-dependent protein kinase A (PKA) pathway.

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