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当前位置: 首页 > 文章 > 拮抗细菌诱导番茄植株抗灰霉病机理研究 植物病理学报 2004,20 (6) 507-511
Position: Home > Articles > Mechanisms of resistance to gray mould in tomato plant induced by antagonistic bacteria Acta Phytopathologica Sinica 2004,20 (6) 507-511

拮抗细菌诱导番茄植株抗灰霉病机理研究

作  者：
童蕴慧;郭桂萍;徐敬友;纪兆林;陈夕军
单  位：
扬州大学农学院植保系;南通出入境检验检疫局
关键词：
多粘类芽孢杆菌;诱导抗性;PAL;POD;PPO;SOD;活性氧;水杨酸;灰霉病菌
摘  要：
拮抗细菌多粘类芽孢杆菌(Paenibacillus polymyxa)W3菌株悬浮液及其滤液可以诱导番茄叶片对灰霉病(Botrytiscinerea)的系统抗性。W3及其滤液诱导处理后,植株叶内苯丙氨酸解氨酶(PAL)、过氧化物酶(POD)、多酚氧化酶(PPO)和超氧化物歧化酶(SOD)活性明显增强。诱导后1 d,PAL活性最大,是对照的3.8-3.9倍,6 d后仍为对照的2.5倍;POD和PPO诱导后3 d活性最高,分别比对照增加34.7％-54.1％和78.5％-78.7％,6 d后仍比对照高;SOD活性诱导后2d达高峰,6 d后稍高于对照。活性氧(O2-)产生速率诱导后1 d最大,比对照增加85.6％-88.6％,以后急剧下降,6 d后接近对照。此外,W3诱导后1 d或2 d,处理叶和上一叶位叶片水杨酸含量明显上升,分别是对照的2.6倍和1.6倍,这表明该拮抗细菌诱导的系统抗性可能与水杨酸介导有关。
译  名：
Mechanisms of resistance to gray mould in tomato plant induced by antagonistic bacteria
作  者：
TONG Yun-hui, GUO Gui-ping, XU Jing-you, JI Zhao-lin, CHEN Xi-jun (Department of Plant Protection, Agricultural College, Yangzhou University, Yangzhou, Jiangsu 225009, China;Nantong Entry-Exit Inspection and Quarantine Bureau, Nantong, Jiangsu 226005, China)
关键词：
P aenibacillus polymyxa; induced resistance; PAL; POD; PPO; SOD; AOS; SA;Botrytis cinerea
摘  要：
Systemic resistance in tomato leaves against Botrytis cinerea could be induced by the antagonistic bacterium Paenibacillus polymyxa W3 and its culture filtrate. After the treatment with W3 or its culture filtrate, the activities of phenylalanine ammonia-lyase (PAL), peroxidase (POD), polypenoloxi-dase (PPO) and superoxide dismutase (SOD) in tomato leaves increased obviously. The activities of PAL and SOD peaked 1 day after the treatment while the activities of POD and PPO reached their maximum 3 days after the treatment. Compared with control, PAL, POD, PPO and SOD in treated leaves kept higher activities for 6 days during the experiment. O2- production rate in treated leaves reached the peak 1 day after inoculation and showed 85.6%-88. 6% higher than that in the control. Salicylic acid (SA) was found increasing significantly and showed 1. 6 fold and 2. 6 fold higher in treated leaves and their upper leaves, respectively, in comparison with the leaves in un-inoculated control. The results indicated that SA could be involved in the induction of systemic resistance triggered by the antagonistic bacterium and its culture filtrate.

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