Study on the biocontrol effect of Streptomyces sp. NEAU-KT41 and its cell-free culture filtrate against wheat root rot

文献类型： 外文期刊

第一作者： Cai, Yang

作者： Cai, Yang;Gu, Jinzhao;Ling, Ling;Bing, Hui;Cui, Lijie;Li, Ailin;Zhang, Yance;Kong, Xinyu;Wang, Xiangjing;Zhao, Junwei;Xiang, Wensheng;Wang, Xiangjing;Xiang, Wensheng

作者机构：

关键词： Streptomyces sp. NEAU-KT41; Bipolaris sorokiniana; Biocontrol; Plant growth promoting rhizobacteria; Cell-free culture filtrate

期刊名称：PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY （ 影响因子：2.8； 五年影响因子：2.8 ）

ISSN： 0885-5765

年卷期： 2024 年 133 卷

页码：

收录情况： SCI

摘要： Wheat root rot, caused by Bipolaris sorokiniana , is a significant and extensive soilborne disease. Streptomyces sp. NEAU-KT41 was isolated from healthy wheat root soil and possessed strong antifungal activity against B. sorokiniana . Findings from the pot test indicated that strain NEAU-KT41 (10 8 CFU/mL) and its 10 % cell-free culture filtrate had significant biocontrol efficiency against wheat root rot, with 66.67 % and 64.4 %, respectively, resulting in significant increases in biomass and chlorophyll content. For 10 8 CFU/mL spore suspension, the plant height increased by 167.52 %; root length by 141.64 %, fresh weight by 65 %, chlorophyll a by 13.43 %, and chlorophyll b by 51.02 % under disease stress. For the 10 % cell-free culture filtrate, the plant height increased by 21.93 %, root length by 17.92 %, dry weight by 29.35 %, chlorophyll a by 17.92 %, and chlorophyll b by 82.15 % under disease stress. Moreover, strain NEAU-KT41 could produce proteases, amylases, lipases, and ACC deaminase, and had the ability to decompose organic phosphorus and fix nitrogen. The cell-free culture filtrate affected B. sorokiniana in several manners, including increasing the cell membrane permeability, diminishing the soluble protein content in the mycelia, impeding conidia germination and germ tube extension, and affecting B. sorokiniana invasion of plants. Briefly, Streptomyces sp. NEAU-KT41 is a prospective biocontrol agent that can be used to manage root rot in wheat and has potential applications.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序