Volatile Organic Compounds of Bacillus pumilus Strain S1-10 Exhibit Fumigant Activity Against Meloidogyne incognita

文献类型： 外文期刊

第一作者： Dai, Ming-ming

作者： Dai, Ming-ming;Jiang, Hao;Song, Wen-Wen;Zhang, Jie;Liang, Chen;Zhao, Hong-Hai;Shi, Qian-Qian;Dai, Ming-ming;Song, Wen-Wen;Liang, Chen;Zhao, Hong-Hai;Shi, Qian-Qian;Liu, Rui;Zhang, Xiao-Ping

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关键词： Bacillus pumilus; disease management; fumigant activity; GC-MS analysis; Meloidogyne incognita; nematodes; vegetables; volatile organic compounds (VOCs)

期刊名称：PLANT DISEASE （ 影响因子：4.5； 五年影响因子：5.0 ）

ISSN： 0191-2917

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Root-knot nematodes (RKNs) are highly specialized parasites that cause significant yield losses worldwide. In this study, we isolated Bacillus pumilus strain S1-10 from the rhizosphere soil of Zingiber officinale Rosc. plants and evaluated its fumigant activity against Meloidogyne incognita. S1-10 exhibited a strong repellent effect on second-stage juveniles (J2s) of M. incognita, and in vitro assays indicated that S1-10 volatile organic compounds (VOCs) suppressed J2 activity and egg hatching. Under greenhouse conditions, 71 and 79% reductions of nematodes and eggs were detected on plants treated with S-10 VOCs compared with controls. Ten VOCs were identified through gas chromatography and mass spectrometry (GC-MS), of which 2-(methylamino)-ethanol (2-ME) had strong fumigant activity against J2s of M. incognita, with an LC50 value of 1.5 mM at 12 h. These results indicate that S1-10 represents a potential novel biocontrol agent for RKNs.

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