[1]纠敏,李晶晶,李伟山,等.大豆疫霉病病菌生防放线菌的筛选、鉴定及生防效果[J].江苏农业学报,2021,(05):1137-1142.[doi:doi:10.3969/j.issn.1000-4440.2021.05.007]
 JIU Min,LI Jing-jing,LI Wei-shan,et al.Screening, identification and biocontrol effect of actinomycetes against Phytophthora sojae[J].,2021,(05):1137-1142.[doi:doi:10.3969/j.issn.1000-4440.2021.05.007]
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大豆疫霉病病菌生防放线菌的筛选、鉴定及生防效果()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2021年05期
页码:
1137-1142
栏目:
植物保护
出版日期:
2021-10-30

文章信息/Info

Title:
Screening, identification and biocontrol effect of actinomycetes against Phytophthora sojae
作者:
纠敏12李晶晶1李伟山12冯辉2刘瑞显3魏利辉2周冬梅2
(1.河南科技大学食品与生物工程学院,河南洛阳471023;2.江苏省农业科学院植物保护研究所,江苏南京210014;3.江苏省农业科学院经济作物研究所,江苏南京210014)
Author(s):
JIU Min1LI Jing-jing12LI Wei-shan12FENG Hui2LIU Rui-xian3WEI Li-hui2ZHOU Dong-mei2
(1.College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China;2.Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;3.Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China)
关键词:
放线菌链霉菌生物防治大豆疫病大豆疫霉病病菌
Keywords:
actinomyceteStreptomycesbiological controlsoybean blightPhytophthora sojae
分类号:
S482.2+92
DOI:
doi:10.3969/j.issn.1000-4440.2021.05.007
文献标志码:
A
摘要:
为了开发对大豆疫霉病病菌具有拮抗作用的放线菌资源,从健康大豆根际土壤中分离筛选获得2株对大豆疫病具有显著抑制效果的生防放线菌菌株JAX-13和JAX-14。经生理生化和分子生物学鉴定,菌株JAX-13和JAX-14分别为放线菌属细菌(Actinomycetales bacterium)和链霉菌(Streptomyces)。平板拮抗试验结果表明,2种菌株对大豆疫霉病病菌的抑制率分别为56.26%和50.06%;光学显微镜观察发现,菌株JAX-13和JAX-14发酵液处理的大豆疫霉病病菌菌丝排列杂乱无章,菌丝生长受到抑制并且菌丝内部出现原生质聚集成块现象。盆栽试验结果表明,经菌株JAX-13和JAX-14发酵液处理的大豆对大豆疫霉病病菌的防效分别达56.56%和72.22%,且菌株发酵液对大豆植株具有一定的促生作用。总体来看,菌株JAX-13和JAX-14生防效果优良,是2种具有潜在应用价值的放线菌。
Abstract:
To develop actinomycete resources with antagonistic effect on Phytophthora sojae, two strains of biocontrol actinomycetes JAX-13 and JAX-14 were isolated and screened from healthy soybean rhizosphere soil, which had significant inhibitory effect on soybean Phytophthora blight. Through physiological, biochemical analysis and molecular biology identification, strains JAX-13 and JAX-14 were identified as Actinomycetales bacterium and Streptomyces, respectively. The results of plate confrontation test showed that, the inhibition rates of two strains to P. sojae were 56.26% and 50.06%, respectively. Through optical microscope observation, it was found that the hyphae of P. sojae treated by the fermentation broth of JAX-13 and JAX-14 strains arranged disorderly, the growth of hyphae was inhibited and the protoplasm in hyphae gathered into lumps. The results of pot experiment showed that, after treated with fermentation broth of JAX-13 or JAX-14 strain, the control effects of soybeans against P. sojae were 56.56% and 72.22%, respectively, and the fermentation broth showed some promoting effects on the growth of soybean plants. In general, strains JAX-13 and JAX-14 are two kinds of actinomycete with good biocontrol effect and show potential application value.

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备注/Memo

备注/Memo:
收稿日期:2020-02-01基金项目:国家重点研发计划项目(2018YFD0201005); 江苏省农业科技自主创新基金项目[CX(18)2005]作者简介:纠敏(1971-),女,河南杞县人,博士,副教授,主要从事双生病毒与媒介昆虫互作及机制研究。(E-mail)jiumin0912@163.com
更新日期/Last Update: 2021-11-09