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| 植物病原细菌中超氧阴离子释放及其释放位点的研究 | |
| 引用本文： | 李欣,李红玉,庞新跃,王金生,李敏权.植物病原细菌中超氧阴离子释放及其释放位点的研究[J].微生物学报,2005,45(2):283-287. |
| 作者姓名： | 李欣 李红玉 庞新跃 王金生 李敏权 |
| 作者单位： | 1. 兰州大学生命科学学院,兰州,730000 2. 南京农业大学农业部病虫监测与治理重点实验室,南京,210095 3. 甘肃农业大学植物保护学系,兰州,730060 |
| 基金项目： | 国家自然科学基金 (3 0 170 2 3 8)~~ |
| 摘 要： | 实验发现很多植物病原细菌具有自身释放超氧阴离子的现象 ,其释放规律与菌株的致病性可能存在一定的关系。并且植物病原细菌超氧阴离子的释放是多位点的 ,在细胞膜、细胞壁及无菌滤液中用化学方法及电子自旋共振法 (Electronspinresonance ,ESR)都能够检测到超氧阴离子的释放。无论是自然生理状态下 ,还是SOD酶活性被抑制后 ,都显示各组分中无菌滤液的超氧阴离子浓度最高 ,可能是植物病原细菌超氧阴离子释放的主要位点。 |
| 关 键 词： | 植物病原细菌 超氧阴离子释放 电子自旋共振(ESR) |
| 文章编号： | 0001-6209(2005)02-0283-05 |
| 修稿时间： | 2004年7月8日 |
Production and releasing sites of superoxide anion in phytopathogenic bacteria |
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| LI Xin,LI Hong-yu,PANG Xin-yue,WANG Jin-sheng,LI Min-quan.Production and releasing sites of superoxide anion in phytopathogenic bacteria[J].Acta Microbiologica Sinica,2005,45(2):283-287. | |
| Authors: | LI Xin LI Hong-yu PANG Xin-yue WANG Jin-sheng LI Min-quan |
| Institution: | School of Life Sciences, Lanzhou University, Lanzhou 730000, China. lixin2004@st.lzu.edu.cn |
| Abstract: | Many phytopathogenic bacteria were founded to release the superoxide anion (O- 2) by themselves from different sites and the production of O- 2 was related to the pathogenicity of strains. The presences of O- 2 in cytomembrane, cell wall and filtrate were confirmed by chemical method and electron spin resonance (ESR). The results show that filtrate may be the primary site of O- 2 production due to its higher O- 2 generating activity either in the presence or the absence of DDC. Additional lines of evidence further suggested a regulatory mechanism of O- 2 production in phytopathogenic bacteria. |
| Keywords: | Phytopathogenic bacteria Superoxide anion production Electron spin resonance (ESR) |
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