| 水稻白叶枯病菌的胞外酶与毒力关系的初步研究 |
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| 引用本文： | 邵蔚蓝,许志刚,方中达.水稻白叶枯病菌的胞外酶与毒力关系的初步研究[J].南京农业大学学报,1986(4). |
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| 作者姓名： | 邵蔚蓝 许志刚 方中达 |
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| 作者单位： | 南京农业大学植物病理教研组，南京农业大学植物病理教研组，南京农业大学植物病理教研组 硕士研究生 |
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| 摘 要： | 研究了水稻白叶枯病菌60个菌株所产生的胞外蛋白酶、纤维素酶(Cx)和果胶酶的活力及其产生胞外粘多糖的能力。从总体看,蛋白酶活力与菌株毒力成正相关,而纤维素酶活力与菌株毒力相关不显著。但来自华南地区的一些菌株的毒力与纤维素酶活力显著相关,而与蛋白酶没有显著的相关性。蛋白酶和纤维素酶的产生都受培养基中氮源成分的影响。尚未发现果胶酶活力及粘多糖产生能力与毒力有任何关系。
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| 关 键 词： | 水稻白叶枯病菌 胞外酶 毒力 |
STUDIES ON RELATIONSHIP BETWEEN HYDROLASE ACTIVITIES AND VIRULENCE OF XANTHOMONAS CAMPESTRIS PV.ORYZAE |
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| Shao Weilan,Xu Zhigang and Fang Zhongda.STUDIES ON RELATIONSHIP BETWEEN HYDROLASE ACTIVITIES AND VIRULENCE OF XANTHOMONAS CAMPESTRIS PV.ORYZAE[J].Journal of Nanjing Agricultural University,1986(4). |
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| Authors: | Shao Weilan Xu Zhigang and Fang Zhongda |
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| Abstract: | The hydrolase activity in culture filtrate was tested and compared with virulence of 60 isolates of Xanthomonas campestris pv. oryzae, the causal organism of bacterial blight of rice. It was showed that the protease activities were significantly correlated with the virulence of the pathogen isolates. In 13 isolates collected from the tropical area, there was a significant relation between the cellulase activity and the virulence. The hydrolases activities variated when the bacteria were cultured in different media which contained different nitrogen sources. |
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| Keywords: | Xanthomonas oryzae Protease Virulence |
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