Biological potential of Pseudomonas sp BS1 in the control of Phytophthora root rot of soybean

被引:5
|
作者
Hou, Jumei [1 ]
Bi, Sining [1 ]
Yan, Lei [1 ]
Zuo, Yuhu [1 ]
Wang, Yanjie [1 ]
Liu, Tong [1 ]
Zhu, Jiewei [2 ]
机构
[1] Heilongjiang Bayi Agr Univ, Inst Plant Pathol & Appl Microbiol, Daqing 163319, Heilongjiang, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai 200240, Peoples R China
来源
基金
国家教育部博士点专项基金资助;
关键词
Pseudomonas; Phytophthora; zoosporangium; zoospore; biological control; F-SP GLYCINEA; RESISTANT MUTANTS; BIOSURFACTANTS; EFFICACY; CAPSICI;
D O I
10.5897/AJMR11.1241
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
In this study, the biological potential of Pseudomonas sp. BS1 in the control of Phytophthora root rot of soybean was investigated. Fermentation filtrates of Pseudomonas sp. BS1 inhibited zoosporangium formation and zoospore germination of Phytophthora sojae (P. sojae), and the inhibitory effect gradually weakened with the increasing filtrate dilution. It had a relatively strong inhibition on hyphal growth of P. sojae, and the inhibition rate of stock solutions reach 95.9%; as dilution increased, the inhibition gradually weakened. The results indicated that Pseudomonas sp. BS1 can inhibit normal growth and development of P. sojae, and pathogen reproduction. Through investigating the controlling effect of Pseudomonas sp. BS1 fermentation filtrates on Phytophthora root rot of soybean under greenhouse conditions, we found that pre-treatment with fermentation filtrates had a preventive effect on disease caused by P. sojae, and post-inoculation treatment with fermentation filtrates had a therapeutic effect. Simultaneous treatment with fermentation filtrates and zoospore suspension had best controlling effects. These results will provide a theoretical basis for the biological control of Phytophthora root rot of soybean using Pseudomonas sp. BS1.
引用
收藏
页码:3589 / 3593
页数:5
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