Naslov
Anhydrobiosis in yeast: cell wall mannoproteins are important for yeast Saccharomyces cerevisiae resistance to dehydration

Autori
Diana Borovikova, Renata Teparić, Vladimir Mrša, Alexander Rapoport

Izvornik
Yeast (0749-503X) 33 (2016), 8; 347-353

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
yeast, Saccharomyces cerevisiae, cell wall, mannoproteins, resistance to dehydration

Sažetak
The state of anhydrobiosis is linked with the reversible delay of metabolism as a result of strong dehydration of cells, and is widely distributed in nature. A number of factors responsible for the maintenance of organisms’ viability in these conditions were revealed. This study was directed to understanding how changes in cell wall structure may influence the resistance of yeasts to dehydration-rehydration. Mutants lacking various cell wall mannoproteins were tested to address this issue. It was revealed that mutants lacking proteins belonging to two structurally and functionally unrelated groups (proteins non-covalently attached to cell wall and Pir proteins) possessed significantly lower cell resistance to dehydration-rehydration than the mother wild-type strain. At the same time, the absence of the GPI-anchored cell wall protein Ccw12 unexpectedly resulted in an increase of cell resistance to this treatment. This phenomenon is explained by the compensatory synthesis of chitin. Results clearly indicate that the cell wall structure/composition belongs to parameters strongly influencing yeast viability during the processes of dehydration-rehydration, and that damage of cell wall proteins during yeast desiccation can be an important factor leading to the cell death.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija

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