Xanthomonas translucens from small grains: Diversity and phytopathological relevance

被引:61
作者
Bragard, C
Singer, E
Alizadeh, A
Vauterin, L
Maraite, H
Swings, J
机构
[1] STATE UNIV GHENT, MICROBIOL LAB, B-9000 GHENT, BELGIUM
[2] ENSAT, PHYTOPATHOL LAB, F-31076 TOULOUSE, FRANCE
关键词
D O I
10.1094/PHYTO.1997.87.11.1111
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Sixty-eight presumptive Xanthomonas translucens strains isolated from 15 small grains or grass species were studied by pathogenicity tests on barley, bread wheat, oat, and bromegrass species, and also by AFLP, analysis of fatty acid methyl eaters (FAME), and sodium dodecyl sulfate-poly acrylamide gel electrophoresis of protein extracts. The X. translucens strains were divided into three pathogenicity types based on differences observed on barley and bread wheat. Two unspeciated strains producing atypical symptoms formed a fourth pathogenicity type. Pathogenicity on oat and bromegrass species varied within these types. Clusterings observed by AFLP analysis and, to a lesser extent, by FAME analysis were consistent with these pathogenicity groupings. The current results, as well as those of previous restriction fragment length polymorphism analyses of the same strains, support the recent reclassification of X. translucens pv. translucens and X. translucens pv. hordei as true synonyms. X. translucens pv. cerealis, X. translucens pv. translucens, and X. translucens pv. undulosa cluster in different groups by AFLP and FAME analyses. Even though distinction by simple biochemical tests is not clear-cut, the data indicate that the pathovars cerea[is, translucens, and undulosa correspond to true biological entities.
引用
收藏
页码:1111 / 1117
页数:7
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