|本期目录/Table of Contents|

[1]胡展,程伟,李一路,等.水稻内生放线菌Ahn109的分离鉴定及对稻瘟病的抑制活性[J].江苏农业科学,2024,52(12):133-140.
 Hu Zhan,et al.Isolation and identification of rice endophytic actinomyces Ahn109 and its inhibitory activity against rice blast[J].Jiangsu Agricultural Sciences,2024,52(12):133-140.
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水稻内生放线菌Ahn109的分离鉴定及对稻瘟病的抑制活性(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第52卷
期数:
2024年第12期
页码:
133-140
栏目:
植物保护
出版日期:
2024-06-20

文章信息/Info

Title:
Isolation and identification of rice endophytic actinomyces Ahn109 and its inhibitory activity against rice blast
作者:
胡展程伟李一路付祖姣郭照辉肖蓉罗容珺杨华伍善东
湖南省微生物研究院,湖南长沙 410009
Author(s):
Hu Zhanet al
关键词:
内生放线菌微白黄链霉菌稻瘟病生物防治分离鉴定
Keywords:
-
分类号:
S435.111.4+1;S182
DOI:
-
文献标志码:
A
摘要:
利用植物内生放线菌防控水稻稻瘟病,已成为新的生物防治方法。为挖掘对稻瘟病菌具有高效拮抗作用的植物内生放线菌资源,采用平板对峙法和菌丝速率抑制法对海南水稻组织中分离纯化的内生放线菌进行筛选,通过菌落形态、培养特征观察、16S rRNA和基因组序列分析对筛选菌株进行鉴定,并初步研究了拮抗菌株的抗逆特性、次生代谢产物组成及其对稻瘟病的防治效果。结果表明,一株微白黄链霉菌(Streptomyces albidoflavus)Ahn109对稻瘟病菌的抑制效果较好,其平板对峙抑菌率为56.73%,发酵滤液稀释10倍后抑菌率为59.84%。抗逆试验显示,该菌株具有良好的紫外、碱和盐耐受性。AntiSMASH软件分析预测该菌株基因组中含有白地霉抗菌素、菲特霉素和缬氨霉素等多种抗菌化合物的生物合成基因簇。盆栽试验结果显示,该菌株对水稻叶瘟和穗颈瘟均有较好防效,其孢子悬浮液处理水稻组织后,盆栽水稻的叶瘟和穗颈瘟发病率比对照分别降低了35.65%和39.08%,叶瘟和穗颈瘟病情防效分别为35.77%和33.64%。综上所述,菌株Ahn109具有较高的生防潜力,可用于水稻稻瘟病生防菌剂的开发。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2023-07-25
基金项目:湖南省技术攻关“揭榜挂帅”项目(编号:2021NK1040);国家自然科学基金(编号:32171633);湖南省自然科学基金(编号:2021JJ30411)。
作者简介:胡展(1987—),男,湖南湘潭人,硕士,助理研究员,主要从事农业微生物的基础和应用研究。E-mail:309594397@qq.com。
通信作者:杨华(1986—),硕士,助理研究员,主要从事农业微生物的基础和应用研究。E-mail:dyyhua@163.com。
更新日期/Last Update: 2024-06-20