Molecular characterization of Colletotrichum species causing soybean anthracnose in Argentina

被引:7
作者
Ramos, Araceli M.
Franco Tadic, Luis
Cinto, Isabel
Carmona, Marcelo
Gally, Marcela
机构
[1] Departamento BBE, FCEN (UBA), PROPLAME-PRHIDEB (CONICET)
[2] Cátedra de Fitopatología, Facultad de Agronomía, UBA C.A.B.A.
关键词
Glomerella glycines; teleomorph; genetic diversity; VEGETATIVE COMPATIBILITY GROUPS; CAUSAL AGENT; TRUNCATUM; PATHOGEN; BIOLOGY; AFLP;
D O I
10.5248/123.457
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Twenty-six isolates obtained from soybean crops (Glycine max) with typical anthracnose symptoms were identified as Colletotrichum truncatum (73 %) and C. destructivum (26 %). Their genetic relationships were studied using the AFLP method. A UPGMA phenogram divided the strains into two clusters corresponding with the two species. Genetic distances based on association coefficient were 0.71-0.89 among the 18 C. truncatum strains and 0.67-1 among the eight C. destructivum strains. Genetic variability within species, measured in terms of percentage of polymorphic loci, was high (<90%). Only two isolates showed 100% similarity, suggesting high intraspecific variability.
引用
收藏
页码:457 / 465
页数:9
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