文献类型： 外文期刊

作者： Zhou, Zhifan ¹ ; Wang, Ting ¹ ; Pu, Xuejuan ¹ ; Su, Yinling ² ; Shi, Tingting ¹ ; Zhao, Peiji ¹ ; Yang, Zixiang ² ; Li, Guohong ¹ ;

作者机构： 1.Yunnan Univ, Sch Life Sci, State Key Lab Conservat & Utilizat Bioresources Yu, Kunming 650091, Yunnan, Peoples R China

2.Yunnan Acad Agr Sci, Inst Trop Ecoagr Sci, Kunming 650091, Yunnan, Peoples R China

关键词： chemotactic activity; eggs hatching; Lysobacter gummosus; Meloidogyne javanica; nematicidal activity

期刊名称：PHYTOPATHOLOGY （ 影响因子：3.2； 五年影响因子：3.9 ）

ISSN： 0031-949X

年卷期： 2024 年 114 卷 3 期

页码：

收录情况： SCI

摘要： The strains in Lysobacter spp. have the potential to control plant-parasitic nematodes. In our experiment, L. gummosus YMF3.00690 showed antagonistic effects against plant root-knot nematode. Nine metabolites were isolated and identified from cultures of L. gummosus YMF3.00690, of which compound 1 was identified as a new metabolite tetrahydro-4,4,6-trimethyl-6-[(tetrahydro-6,6-dimethyl-2-oxo-4(1H)-pyrimidinylidene) methyl]-2(1H)-pyrimidinone. The activity assay showed that two compounds, 5-(hydroxymethyl)-1H-pyrrole-2-carbaldehyde (2) and 1H-pyrrole-2-carboxylic acid (3), had nematicidal activities against Meloidogyne javanica with mortalities of 69.93 and 90.54% at 400 ppm for 96 h, respectively. These two compounds were further tested for the inhibition activity of eggs hatching, and compound 3 showed a significant inhibition rate of 63.36% at 50 ppm for 48 h. In the chemotactic activity assay, three compounds (1 to 3) were found to have concentration-dependent chemotactic activity, of which compound 1 showed attractive activity. This experiment explored the active metabolites of L. gummosus YMF3.00690 against M. javanica and laid the foundation for biopesticide development.