| 大白菜软腐病菌游动性突变体在大白菜体内增殖扩展研究 |
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| 引用本文： | 宋从凤,潘小玫,陆萍,王金生.大白菜软腐病菌游动性突变体在大白菜体内增殖扩展研究[J].植物病理学报,2002,32(2):165-169. |
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| 作者姓名： | 宋从凤 潘小玫 陆萍 王金生 |
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| 作者单位： | 南京农业大学植保学院, 农业部病虫监测与治理重点开放实验室, 南京 210095 |
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| 摘 要： | 用培养皿滤纸吸附测定法和不伤根土壤拌菌处理及针刺接种法,测定了大白菜软腐病菌游动性突变体进入大白菜体内、并在其中侵染定殖和扩展的特性。结果表明,游动性丧失和增强的突变体都可以通过种子萌发和主动接触进入大白菜体内、并可以在体内有短期的繁殖,但菌量远低于野生菌。大白菜叶片接种实验说明,这两种突变体也都可以进行短距离扩展,但扩展距离和菌的繁殖量低于野生菌。
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| 关 键 词： | 大白菜软腐病菌 游动性突变体 大白菜 增殖 扩展 |
| 文章编号： | 0412-0914(2002)02-0165-05 |
| 修稿时间： | 2001年2月8日 |
MULTIPLICATION AND EXTENSION OF TWO MOTILITY MUTANTS OF Erwinia carotovora subsp. Carotovora IN CHINESE CABBAGE |
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| SONG Cong feng,PAN Xiao mei,LU Ping,WANG Jin sheng.MULTIPLICATION AND EXTENSION OF TWO MOTILITY MUTANTS OF Erwinia carotovora subsp. Carotovora IN CHINESE CABBAGE[J].Acta Phytopathologica Sinica,2002,32(2):165-169. |
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| Authors: | SONG Cong feng PAN Xiao mei LU Ping WANG Jin sheng |
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| Institution: | Key Lab. of Monitoring and Management of Plant Diseases and Insects, Ministry of Agriculture;Dept. of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China |
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| Abstract: | The invasion, multiplication and extension of two motility mutants of Erwinia carotovora subsp. carotovora in Chinese cabbage were investigated. In total, three inoculation methods were used: dish filter paper adsorption, soil drench and needle puncture. Results showed that both kinds of motility mutants could enter in and reproduce slightly in Chinese cabbage within a short period. With the time pass by, the number of bacteria of both mutants declined. Both mutants could extend within a shorter distance than the wild strain Ecc 12. |
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| Keywords: | Erwinia carotovora subsp carotovora motility mutants Chinese cabbage multiplication extension |
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