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中国生物防治学报 ›› 2017, Vol. 33 ›› Issue (6): 817-825.DOI: 10.16409/j.cnki.2095-039x.2017.06.015

• 研究论文 • 上一篇    下一篇

产生ACC脱氨酶的PGPR种衣剂对黄瓜细菌性茎软腐病的防治效果

贺字典1, 闫立英1, 石延霞2, 李宝聚2, 高玉峰1, 张明珠1, 孙健1   

  1. 1. 河北科技师范学院, 秦皇岛 066004;
    2. 中国农业科学院蔬菜花卉研究所, 北京 100081
  • 收稿日期:2017-09-08 出版日期:2017-12-08 发布日期:2017-12-16
  • 通讯作者: 李宝聚,博士,研究员,博士生导师,E-mail:lbju88@caau.com.cn
  • 作者简介:贺字典,博士,教授,E-mail:zidianhe1972@163.com
  • 基金资助:
    河北省科技支撑农业关键共性技术攻关专项(17226914D);秦皇岛市科技支撑计划项目(2012YB002);河北省现代农业产业技术体系蔬菜创新团队建设资助项目(QN2015101)

Bio-control of PGPR Seed Coating Producing ACC Deaminase to Cucumber Bacterial Stem Soft Rot Disease

HE Zidian1, YAN Liying1, SHI Yanxia2, LI Baoju2, GAO Yufeng1, ZHANG Mingzhu1, SUN Jian1   

  1. 1. Hebei Normal University of Science and Technology, Qinhuangdao 066004, China;
    2. Institute of Vegetable and Flower, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2017-09-08 Online:2017-12-08 Published:2017-12-16

摘要: 为防治近几年越冬茬黄瓜上的新病害——细菌性茎软腐病,从海边盐生植物根际土壤中富集培养、分离和鉴定了产1-氨基环丙烷-1-羧酸(ACC)脱氨酶的植物根际促生菌(PGPR),共鉴定出了嗜麦芽寡养单胞菌Stenotrophomonas maltophilia、土生拉乌尔菌Raoultella terrigena、土壤杆菌Agrobacterium tumefaciens、产酸克雷伯菌Klebsiella oxytoca、成团泛菌Pantoea agglomerans、产气肠杆菌Enterobacter aerogenes和克吕沃尔氏菌Kluyvera cryocrescens共7个种的PGPR。测定了ACC脱氨酶活性,其中嗜麦芽寡养单胞菌菌株CRG-2,产生ACC脱氨酶活性最高,为324.3 μmol/(mg·h)。将菌株CRG-2和枯草芽胞杆菌复配制成丸化种衣剂后,测定了对黄瓜细菌性茎软腐病的田间防治效果。结果表明,嗜麦芽寡养单胞菌和枯草芽胞杆菌复配后形成的种衣剂对黄瓜细菌性茎软腐病的田间防治效果达到73.13%,高于中生菌素防治效果15.79%。由此可见该种衣剂有望在生产上用于防治黄瓜细菌性茎软腐病。

关键词: 植物根际促生菌(PGPR), 嗜麦芽寡养单胞菌, ACC脱氨酶, 黄瓜细菌性茎软腐病, 防治效果

Abstract: The plant growth promoting rhizo bacteria (PGPR) producing 1-amino cyclopro-pane-1-carboxylic acid (ACC) deaminase were isolated and identified from the rhizosphere soil of seashore halophytesin order to prevent and control cucumber bacterial stem soft rot, a new disease in winter greenhouse cucumber in recent years. 7 species of PGPRincluding Stenotrophomonas maltophilia, Raoultella terrigena, Agrobacterium tumefaciens, Klebsiella oxytoca,Pantoea agglomerans,Enterobacter aerogenes and Kluyvera cryocrescens were identified. The activity of ACC deaminase in Stenotrophomonas maltophilia CRG-2 was the highest, 324.3 μmol/(mg·h) in 22 strains. At the same time, the biocontrol effect of biological seed-coating by mixing isolate strain CRG-2 and Bacillus subtilis with additives to cucumber bacterial stem soft rot were tested in the field. The control effect of the seed coating agent formed by the mixture of strain CRG-2and Bacillus subtilis to cucumber bacterial stem soft rot reached 73.13% in the field, higher than zhongshengmycin with control effect of 15.79%.The encouraging effect of seeding coat on biological control suggested that it had the potential to be applied widely in the cucumber bacterial stem soft rot control in the future.

Key words: plant growth promoting rhizobacteria (PGPR), Stenotrophomonas maltophilia, ACC deaminase, cucumber bacterial stem soft rot, control effect

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