Beauveria bassiana Induces Strong Defense and Increases Resistance in Tomato to Bemisia tabaci
文献类型： 外文期刊
作者： Liu, Mengying 1 ; Xiang, Dong 3 ; Hokkanen, Heikki M. T. 4 ; Niu, Tiandi 1 ; Zhang, Junjie 1 ; Yang, Jinlin 1 ; Wei, Qiuyang 1 ; Chen, Hanqiu 3 ; Liu, Huai 1 ; Li, Yaying 1 ;
作者机构： 1.Southwest Univ, Yibin Acad, Yibin 644000, Peoples R China
2.Southwest Univ, Coll Plant Protect, Key Lab Agr Biosafety & Green Prod Upper Yangtze R, Chongqing 400715, Peoples R China
3.Tibet Acad Agr & Anim Husb Sci, Inst Vegetable, Lhasa 850032, Peoples R China
4.Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA
关键词： phenylalanine deaminase; induced resistance; phenolics; antioxidant
期刊名称：JOURNAL OF FUNGI （ 影响因子：4.0； 五年影响因子：4.5 ）
ISSN：
年卷期： 2025 年 11 卷 2 期
页码：
收录情况： SCI
摘要： Pre-stimulation of plants can change their resistance mechanisms, thereby enhancing their defense responses. Beauveria bassiana, a broad-spectrum entomogenous fungi, can also induce plant defenses, but it received little attention. Here, we show that B. bassiana can act as a stimulus to prime tomato defense responses, improving resistance in the plant to herbivore stress. The results illustrated that four defense genes (PIN2, PR2, PAL, and MPK3) were upregulated in all B. bassiana treatments, especially the phenylalanine deaminase (PAL) gene, which was highly expressed in tomato plants after B. bassiana inoculation. Feeding through Bemisia tabaci resulted in a weak upregulation of defense genes. However, in combined fungal inoculation and B. tabaci feeding, a total of nine defense genes were upregulated, among which five genes-PAL, PPO, PIN2, PR2, and PR1-were closely related to the phenol synthesis. The results of tomato plant metabolism showed that B. bassiana mainly activates tomato phenylpropane metabolic pathways, with this modulation being influenced by jasmonate. Further explorations revealed a significant enhancement in the antioxidant capacity of the plants, as evidenced by the determination of their antioxidant compounds and the coloration of leaf phenolic substances. Thus, entomopathogenic fungi can act as an exogenous substance to activate the defense responses of tomatoes without damaging the plant, indicating a good potential for developing applications using B. bassiana to promote resistance in tomatoes for pest management.
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