The role of the trehalose transporter during germination

被引：14

作者：

Cuber, R ^{[1
]}

Eleutherio, ECA ^{[1
]}

Pereira, MD ^{[1
]}

Panek, AD ^{[1
]}

机构：

[1] FED UNIV RIO DE JANEIRO,INST QUIM,DEPT BIOQUIM,BR-21949900 RIO JANEIRO,BRAZIL

来源：

BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES | 1997年 / 1330卷 / 02期

关键词：

trehalose transporter; germination; stress; (Saccharomyces cerevisiae);

D O I：

10.1016/S0005-2736(97)00152-1

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Previous studies on the resistance of yeast cells to dehydration pointed towards the protective role of trehalose and the importance of the specific trehalose transporter in guaranteeing survival. The present report demonstrates that the trehalose transporter is essential during the germination process in order to translocate trehalose from the cytosol to the external environment. Diploids that lack the trehalose transporter germinate poorly and do not form 4 spore tetrads although they accumulate trehalose and show trehalase activity. Furthermore, addition of exogenous trehalose to the germination medium enhances germination and normal segregation. The ability to transport trehalose is dominant and seems to be related to a single gene. (C) 1997 Elsevier Science B.V.

引用

页码：165 / 171

页数：7

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