Reference: Ji H, et al. (2014) Identification of a novel HOG1 homologue from an industrial glycerol producer Candida glycerinogenes. Curr Microbiol 69(6):909-14

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Abstract


Candida glycerinogenes, a glycerol production industrial strain with hyperosmo-adaptation can grow well in 15 % (w/v) NaCl or 55 % (w/v) glucose. To understand the osmo-adaptation mechanism in C. glycerinogenes, the mitogen-activated protein kinase HOG1 gene (CgHOG1), which plays an essential role in the yeast hyperosmotic response, was isolated by degenerate PCR and SEFA-Formed Adaptor PCR. The CgHOG1 gene was then transformed in Saccharomyces cerevisiae hog1Δ null mutant, which restored the recombination S. cerevisiae to the wild-type phenotype with osmo-adaptation. To further clarify the function of CgHOG1, the phosphorylation of CgHOG1 and transcription of the glycerol-3-phosphate dehydrogenase gene (GPD1) of the CgHOG1-harbouring S. cerevisiae mutant was detected, and found to be similar to that of wild-type S. cerevisiae. In addition, the recombination S. cerevisiae with CgHOG1 gene significantly accumulated intracellular glycerol when stressed with NaCl.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Ji H, Lu X, Wang C, Zong H, Fang H, Sun J, Zhuge J, Zhuge B
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