RNASE PROTECTION ANALYSES SHOW HIGH GENETIC DIVERSITY AMONG FIELD ISOLATES OF SATELLITE TOBACCO MOSAIC-VIRUS

被引：37

作者：

KURATH, G ^{[1
]}

HEICK, JA ^{[1
]}

DODDS, JA ^{[1
]}

机构：

[1] UNIV CALIF RIVERSIDE,DEPT PLANT PATHOL,RIVERSIDE,CA 92521

来源：

VIROLOGY | 1993年 / 194卷 / 01期

关键词：

D O I：

10.1006/viro.1993.1278

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Fifteen field isolates of satellite tobacco mosaic virus (STMV) were collected from wild Nicotiana glauca plants within a 20-km2 area in southern California. Analyses of the entire length of the satellite genomic RNA of each isolate by RNase protection assays showed that there were 10 different genotypes within the 15 isolates, including some with regions of extreme divergence from the STMV type strain. This indicates a very high level of genetic diversity between natural STMV populations. Isolates from adjacent plants (within 3 m) were not always identical, but were more similar than those from more distant locations. Mapping of the genomic sites of heterogeneity revealed that in all cases the 3 half of the genome, which comprises the untranslated region, was more conserved than were the 5 coding regions. © 1993 Academic Press. All rights reserved.

引用

页码：414 / 418

页数：5

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