Endophytic Colonization of Beauveria bassiana Enhances Drought Stress Tolerance in Tomato via "Water Spender" Pathway
文献类型： 外文期刊
作者： Guo, Wenbo 1 ; Lu, Yang 1 ; Du, Song 1 ; Li, Qiyun 1 ; Zou, Xiaowei 1 ; Zhang, Zhengkun 1 ; Sui, Li 1 ;
作者机构： 1.Jilin Acad Agr Sci, Inst Plant Protect, Gongzhuling 136100, Peoples R China
2.Minist Agr & Rural Affairs, Jilin Key Lab Agr Microbiol, Key Lab Integrated Pest Management Crops Northeast, Gongzhuling 136100, Peoples R China
3.Henan Agr Univ, Coll Plant Protect, Zhengzhou 450002, Peoples R China
4.Jilin Univ Agr Sci & Technol, Coll Agr, Jilin 132109, Peoples R China
关键词： entomogenous fungi; endophytic colonization; tomato; drought tolerance
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.7 ）
ISSN： 1661-6596
年卷期： 2024 年 25 卷 22 期
页码：
收录情况： SCI
摘要： Drought stress is one of the most important climate-related factors affecting crop production. Tomatoes (Solanum lycopersicum L.) are economically important crops which are highly sensitive to drought. The entomopathogenic fungus Beauveria bassiana, a widely used biological insecticide, can form symbiotic relationships with plants via endophytic colonization, increasing plant biomass and the ability to resist biotic stress. Under simulated drought stress conditions, the biomass of tomato seedlings such as plant height, root length, stem diameter, fresh weight, and relative water content, as well as the density and size of stomata in tomato leaves were significantly increased after B. bassiana colonization via root irrigation (p < 0.05). Meanwhile, the physicochemical properties associated with drought resistance such as peroxidase activity and proline content increased significantly (p < 0.05), while malondialdehyde reduced significantly (p < 0.05), and the expression levels of key genes related to stomatal development and drought tolerance pathways increased significantly (p < 0.05). These results indicate that the colonization of B. bassiana enhances the water absorption capacity of tomato seedlings and the rate of transpiration significantly and increases drought tolerance in tomato via the "water spender" pathway, which provides a new strategy for improving crop resistance to drought stress.
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