DIFFERENTIATION OF VERTICILLIUM-DAHLIAE POPULATIONS ON THE BASIS OF VEGETATIVE COMPATIBILITY AND PATHOGENICITY ON COTTON
DIFFERENTIATION OF VERTICILLIUM-DAHLIAE POPULATIONS ON THE BASIS OF VEGETATIVE COMPATIBILITY AND PATHOGENICITY ON COTTON
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DOI：
10.1007/bf01876095
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发表时间：
1995-01-01
影响因子：
1.8
通讯作者：
GEIGER, JP
中科院分区：
文献类型：
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作者：
DAAYF, F;NICOLE, M;GEIGER, JP
互补营养缺陷型硝酸盐非利用（nit）的突变体被用来调查VE兼容性内27株黄萎病菌从几个主机来自非洲，亚洲，欧洲和美国分离。利用从这些菌株产生的约500个nit突变体，鉴定了3个营养体亲和性组，1，2和4。同时，对陆地棉、棉叶、叶、barbadense和G.根据叶片蚀变指数（FAI）和布朗宁指数（BI）估算的结果，对亚洲树木的叶片进行了分类。VCG 1中的菌株是棉花落叶致病型和3号生理小种（棉花上），但对番茄不致病; VCG 2和VCG 4中的菌株是非落叶致病型，属于棉花和番茄上的不同生理小种。来自亲本野生型菌株的透明突变体表现出致病性的差异，但总是分配给亲本VCG。VCGs与寄主植物的分类地位有一定的关系。来自nit配对的数据表明，大丽轮枝菌亚群（VCGs）可能不是完全遗传隔离的。
Complementary auxotrophic nitrate-nonutilizing (nit) mutants were used to investigate ve compatibility within 27 strains of Verticillium dahliae isolated from several hosts originating from Africa, Asia, Europe and the United States. Using about 500 nit mutants generated from these strains, three vegetative compatibility groups, 1, 2 and 4, were identified. Simultaneously, virulence of each strain was assessed on cultivars of Gossypium hirsutum, G. barbadense and G. arboreum, based upon Foliar Alteration Index (FAI) and Browning Index (BI) estimation. The strains in VCG1 were of both the cotton-defoliating pathotype and race 3 (on cotton) but were non pathogenic on tomato; those in VCG2 and VCG4 were of the nondefoliating pathotype and belonged to different races on cotton and on tomato. Hyaline mutants deriving from parental wild-type strain showed differences in pathogenicity but were always assigned to the parental VCG. A relationship was established between VCGs and the taxonomic position of host plants. Data from nit pairings indicated that the sub-populations of V. dahliae (VCGs) may not be completely isolated genetically.