Viral dsRNA in the wine yeast Saccharomyces bayanus var. uvarum

被引：13

作者：

Ivannikova, Yuliya V. ^{[1
]}

Naumova, Elena S. ^{[1
]}

Naumov, Gennadi I. ^{[1
]}

机构：

[1] State Inst Genet & Select Ind Microorganisms, Moscow 117545, Russia

来源：

RESEARCH IN MICROBIOLOGY | 2007年 / 158卷 / 8-9期

基金：

俄罗斯基础研究基金会;

关键词：

Saccharomyces bayanus; cryophilic yeast; cryptic plasmid; L-dsRNA; M-dsRNA;

D O I：

10.1016/j.resmic.2007.07.008

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

The presence of viral dsRNA (L and M fractions) in the cryophilic yeast Saccharomyces bayanus var. uvarum is documented here for the first time. Sixty-eight strains of different origins were analyzed. Most of them did not carry dsRNA; the L fraction was found in seven strains, while 11 strains had both L and M fractions. The size of the L fraction was invariable (4.5 kb), as in the cultured yeast Saccharomyces cerevisiae. In contrast to L-dsRNA, the M fraction varied in size from ca. 1.2 to 1.8 kb. In total, seven different M-dsRNA types were recognized (M-1-M-3 and M-8-M-11), predominantly among French wine strains of S. bayanus var. uvarum. Phenotypic analysis revealed that the M-dsRNAs found were cryptic and may represent mutant forms of killer plasmids. (C) 2007 Elsevier Masson SAS. All rights reserved.

引用

页码：638 / 643

页数：6

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