Effects of spaceflight on polysaccharides of Saccharomyces cerevisiae cell wall

文献类型: 外文期刊

第一作者: Liu, Hong-Zhi

作者: Liu, Hong-Zhi;Wang, Qiang;Liu, Xiao-Yong;Tan, Sze-Sze

作者机构:

关键词: Spaceflight;Saccharomyces cerevisiae;Cell wall;beta-Glucan;Mannan;SPACE-FLIGHT;BACILLUS-SUBTILIS;GENE-EXPRESSION;MICROGRAVITY;GROWTH;DELETION;GLUCAN;CULTIVATION

期刊名称:APPLIED MICROBIOLOGY AND BIOTECHNOLOGY ( 影响因子:4.813; 五年影响因子:4.697 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: Freeze-dried samples of four Saccharomyces cerevisiae strains, namely, FL01, FL03, 2.0016, and 2.1424, were subjected to spaceflight. After the satellite's landing on Earth, the samples were recovered and changes in yeast cell wall were analyzed. Spaceflight strains of all S. cerevisiae strains showed significant changes in cell wall thickness (P < 0.05). One mutant of S. cerevisiae 2.0016 with increased biomass, cell wall thickness, and cell wall glucan was isolated (P < 0.05). The spaceflight mutant of S. cerevisiae 2.0016 showed 46.7%, 62.6%, and 146.0% increment in biomass, cell wall thickness and beta-glucan content, respectively, when compared to the ground strain. Moreover, growth curve analysis showed spaceflight S. cerevisiae 2.0016 had a faster growth rate, shorter lag phase periods, higher final biomass, and higher content of beta-glucan. Genetic stability analysis showed that prolonged subculturing of spaceflight strain S. cerevisiae 2.0016 did not lead to the appearance of variants, indicating that the genetic stability of S. cerevisiae 2.0016 mutant could be sufficient for its exploitation of beta-glucan production.

分类号: Q93

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