Dynamics of the Cytosol Soluble Carbohydrates and Membrane Lipids in Response to Ambient pH in Alkaliphilic and Alkalitolerant Fungi

Bondarenko, S.A.; Yanutsevich, E.A.; Sinitsyna, N.A.; Georgieva, M.L.; Bilanenko, E.N.; Tereshina, V.M.

Авторы: Bondarenko S.A., Yanutsevich E.A., Sinitsyna N.A., Georgieva M.L., Bilanenko E.N., Tereshina V.M.
Журнал: Microbiology
Том: 87
Номер: 1
Год издания: 2018
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 21
Последняя страница: 32
Оригинальные версии: Динамика растворимых углеводов цитозоля и мембранных липидов в ответ на изменения внешнего рН у алкалофильных и алкалотолерантных грибов
DOI: 10.1134/S0026261718010034
Аннотация: Comparative composition of lipids and cytosol soluble carbohydrates at different ambient pH values was studied for two obligately alkaliphilic fungi (Sodiomyces magadii and S. alkalinus) and for two alkalitolerant ones (Acrostalagmus luteoalbus and Chordomyces antarcticus). The differences and common patterns were revealed in responses to pH stress for the fungi with different types of adaptation to ambient pH. While trehalose was one of the major cytosol carbohydrates in alkaliphilic fungi under optimal growth conditions (pH 10.2), pH decrease to 7.0 resulted in doubling its content. In alkalitolerant fungi trehalose was a minor component and its level did not change significantly at different pH. In alkalitolerant fungi, arabitol and mannitol were the major carbohydrate components, with their highest ratio observed under alkaline conditions and the lowest one, under neutral and acidic conditions. In alkaliphiles, significant levels of arabitol were revealed only under alkaline conditions, which indicated importance of trehalose and arabitol for alkaliphily. Decreased pH resulted in the doubling of the proportion of phosphatidic acids among the membrane lipids, which was accompanied by a decrease in the fractions of phosphatidylcholines and sterols. Alkalitolerant fungi also exhibited a decrease in sterol level at decreased pH, but against the background of increased proportion of one of phospholipids. Decreased unsaturation degree in the fatty acids of the major phospholipids was a common response to decreased ambient pH.
Добавил в систему: Бондаренко София Андреевна

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Dynamics of the Cytosol Soluble Carbohydrates and Membrane Lipids in Response to Ambient pH in Alkaliphilic and Alkalitolerant Fungiстатья

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