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Physiological and genetic regulation of anhydrobiosis in yeast cells

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ARCHIVES OF MICROBIOLOGY
卷 205, 期 10, 页码 -

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SPRINGER
DOI: 10.1007/s00203-023-03683-w

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Anhydrobiosis; Dehydration; Rehydration; Yeast

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Anhydrobiosis is a state in which the metabolism of living organisms is temporarily delayed or suspended due to dehydration. The viability of yeast cells during the drying process depends on rehydration. Various cellular structures and compounds, such as the cell wall, vacuoles, mitochondria, trehalose, and lipid droplets, play important roles in anhydrobiosis. Additionally, specific proteins and genes are responsible for this process.
Anhydrobiosis is a state of living organisms during which their metabolism is reversibly delayed or suspended due to a high degree of dehydration. Yeast cells, which are widely used in the food industry, may be induced into this state. The degree of viability of yeast cells undergoing the drying process also depends on rehydration. In an attempt to explain the essence of the state of anhydrobiosis and clarify the mechanisms responsible for its course, scientists have described various cellular compounds and structures that are responsible for it. The structures discussed in this work include the cell wall and plasma membrane, vacuoles, mitochondria, and lysosomes, among others, while the most important compounds include trehalose, glycogen, glutathione, and lipid droplets. Various proteins (Stf2p; Sip18p; Hsp12p and Hsp70p) and genes (STF2; Nsip18; TRX2; TPS1 and TPS2) are also responsible for the process of anhydrobiosis. Each factor has a specific function and is irreplaceable, detailed information is presented in this overview.

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