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假单孢菌20#-5菌株对致病疫霉的作用
引用本文:胡军华,周泽扬,蓝希钳,毕朝位,谢洁. 假单孢菌20#-5菌株对致病疫霉的作用[J]. 西南农业学报, 2007, 20(5): 1002-1006
作者姓名:胡军华  周泽扬  蓝希钳  毕朝位  谢洁
作者单位:1. 西南农业大学蚕桑学农业部重点实验室,重庆,400716
2. 西南农业大学植物保护学院,重庆,400716
基金项目:重庆市科委项目7592
摘    要:通过不同浓度的发酵液对致病疫霉生长影响的检测和对马铃薯晚疫病菌孢子萌发的影响试验,发现假单孢菌20#-5菌株对致病疫霉的抑菌机制主要是抑制菌丝的生长及孢子的萌发,2.86%的发酵液的抑制率可达60%以上,高浓度的发酵液对病菌菌丝的生长起抑制而非杀死作用。通过离体叶片试验和盆钵试验,发现此菌株发酵液的主要成分对作物主要起保护作用。

关 键 词:假单孢菌  致病疫霉  抑菌机制
文章编号:1001-4829(2007)05-1002-05
修稿时间:2006-12-26

Effect of Pseudomonas spp.strain 20#-5 on Phytophthora infestans
HU Jun-hua,ZHOU Ze-yang,LAN Xi-qian,BI Chao-wei,XIE Jie. Effect of Pseudomonas spp.strain 20#-5 on Phytophthora infestans[J]. Southwest China Journal of Agricultural Sciences, 2007, 20(5): 1002-1006
Authors:HU Jun-hua  ZHOU Ze-yang  LAN Xi-qian  BI Chao-wei  XIE Jie
Affiliation:1.The Key Sericultural Laboratory of Agriculture Ministry;Southwest Agricultural University;Chongqing 400716;China;2.Plant Protection College;Southwest Agricultural University;Chongqing 400716;China
Abstract:Effect of different concentration of Pseudomonas spp.strain 20#-5 on the mycelial growth and germination zoospores of Phytophthora infestans indicated that pseudomonas.spp.Strain 20#-5 could inhibit the mycelial growth of Phytophthora infestans on potato,tomato and tobacco.Effect of 2.86 % fermented broth could reach higher than 60 %.High concentration of fermented broth suppressed growth of mycelial than killed them.The effect of inhibition was obvious on the germination zoospores of Phytophthora infestans.In experiment of pot culture,strain 20#-5 took a better action on protection than on control of Phytophthora infestan especially by living bacteria.
Keywords:Pseudomonas spp.  Phytophthora infestans  antimicrobial mechanism
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