| 植物病原荧光假单胞杆菌数值分类研究 |
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| 引用本文： | 杨合同,任欣正.植物病原荧光假单胞杆菌数值分类研究[J].植物病理学报,1994,24(2):139-145. |
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| 作者姓名： | 杨合同 任欣正 |
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| 作者单位： | 南京农业大学植保系, 南京 210014 |
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| 摘 要： | 采用数值分类法研究了来自21种寄主植物96个病原荧光假单胞菌菌株(包括5株非荧光菌)的分类问题。结果表明,所有参试荧光菌菌株可分成两大组,第一组(组I)生长较慢,精氨酸双水解酶呈阴性,营养谱窄,多数菌株不利用DL-苯丙氨酸,L-苯丙氨酸,L-羟脯氨酸,L-异亮氨酸,L-色氨酸,L-瓜氨酸,DL-nor-缬氨酸,L-胱氨酸,单宁酸和鼠李糖作为唯一碳源,不能利用天冬氨酸作为唯一碳源和氮源,而第二组(组Ⅱ)的菌株可利用这些化合物。组I的菌株可分为10个亚组(I1-I10),亚组与致病变种或命名种基本对应,与寄主来源密切相关;亚组间的区别在于它们利用底物的能力不同。组Ⅱ均具有精氨酸双水解酶,营养谱广泛。
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| 关 键 词： | 植物病害 荧光菌 数值分类 |
NUMERICAL STUDY ON PLANT PATHOGENIC FLUORESCENT PSEUDOMONADS |
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| Yang Hetong,Ren Xinzheng.NUMERICAL STUDY ON PLANT PATHOGENIC FLUORESCENT PSEUDOMONADS[J].Acta Phytopathologica Sinica,1994,24(2):139-145. |
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| Authors: | Yang Hetong Ren Xinzheng |
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| Institution: | Department of plant protection, Nanjing Agricultural University, Nanjing 210014 |
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| Abstract: | Numerical study of 96 strains of plant pathogenic pseudomonads (includ-, ing 5 strains of nonfluorescent pseudomonads) obtained from 21 kinds of plants were conducted. It showed that all fluorescent strains were separated into 2 groups. Group I grew slowly, gave negative reactions in arginine dihydrolases, and had narrow nutrition spec-trums. Most strains of group I could not use DL-phenylalanine, L-phenylanine, L-hy-droxyproline, L-isoleucine, L-serine, L-citrulline, DL-nor-valine, L-cysteine, tannic acid, rhamnose as sole carbon sources and aspartate as sole carbon and nitrogen (C/N) sources, but strains of group I could use these compounds as sole C or C/N sources. Strains of group I were separated into 10 subgroups which were correspondent with patho-vars or nomenspecies, and correlated with host origines; the distinctions among subgroups were shown in their abilities to use some substrates. Strains of group Ⅱ gave positive reactions in arginine dihydrolases, and had wide nutrition spectrums. |
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