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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제30권 제1호
- 발행연도
- 2020.1
- 수록면
- 62 - 70 (9page)
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Zygosaccharomyces rouxii is an important yeast that is required in the food fermentation process due to its high salt tolerance. In this study, the responses and resistance strategies of Z. rouxii against salt stress were investigated by performing physiological analysis at membrane level. The results showed that under salt stress, cell integrity was destroyed, and the cell wall was ruptured, which was accompanied by intracellular substance spillover. With an increase of salt concentrations, intracellular Na+ content increased slightly, whereas intracellular K+ content decreased significantly, which caused the increase of the intracellular Na+/K+ ratio. In addition, in response to salt stress, the activity of Na+/K+-ATPase increased from 0.54 to 2.14 μmol/mg protein, and the ergosterol content increased to 2.42-fold to maintain membrane stability. Analysis of cell membrane fluidity and fatty acid composition showed that cell membrane fluidity decreased and unsaturated fatty acid proportions increased, leading to a 101.21% rise in the unsaturated/saturated fatty acid ratio. The results presented in this study offer guidance in understanding the salt tolerance mechanism of Z. rouxii, and in developing new strategies to increase the industrial utilization of this species under salt stress.
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참고문헌 (43)
참고문헌 신청
Bert P / 2010 / How do membrane proteins sense water stress? / Mol. Microbiol. 44:889~902
Zhang YM / 2008 / Membrane lipid homeostasis in bacteria / Nat. Rev. Microbiol 6:222~233
Hoang TML / 2014 / Physiological basis of salt stress tolerance in rice expressing the anti-apoptotic gene SfIAP / Funct. Plant Biol 41:1168~1177
Gorini A / 2002 / ATPases enzyme activities during ageing in different types of somatic and synaptic plasma membranes from rat frontal cerebral cortex / Prog. Neuropsychopharmacol. Biol. Psychinatry 26:81~90
Meneghel J / 2017 / Subcellular membrane fluidity of Lactobacillus delbrueckii subsp. bulgaricus under cold and osmotic stress / Appl. Microbiol. Biotechnol. 101:6907~6917
Zhang YM / 2008 / Membrane lipid homeostasis in bacteria / Nat. Rev. Microbiol 6:222~233
Hoang TML / 2014 / Physiological basis of salt stress tolerance in rice expressing the anti-apoptotic gene SfIAP / Funct. Plant Biol 41:1168~1177
Gorini A / 2002 / ATPases enzyme activities during ageing in different types of somatic and synaptic plasma membranes from rat frontal cerebral cortex / Prog. Neuropsychopharmacol. Biol. Psychinatry 26:81~90
Meneghel J / 2017 / Subcellular membrane fluidity of Lactobacillus delbrueckii subsp. bulgaricus under cold and osmotic stress / Appl. Microbiol. Biotechnol. 101:6907~6917
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