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The nematicide emamectin benzoate increases ROS accumulation in Pinus massoniana and poison Monochamus alternatus

文献类型： 外文期刊

作者： Liu, Fengzhu 1 ; Su, Shunde 2 ; Chen, Jie 2 ; Xu, Qinghua 3 ; Song, Gaofei 3 ; Dong, Yuguang 3 ; Jiang, Xiangqing 4 ; Chen, Daoshun 4 ; Fang, Yu 5 ; Li, Jian 1 ; Lin, Chentao 1 ; Su, Jun 1 ; Cai, Shouping 2 ;

作者机构： 1.Fujian Agr & Forestry Univ, Coll Forestry, Basic Forestry & Prote Res Ctr, Fujian Prov Key Lab Haixia Appl Plant Syst Biol, Fuzhou, Peoples R China

2.Fujian Acad Forestry, Key Lab Natl Forestry & Grassland Adm Timber Fores, Fuzhou, Peoples R China

3.Syngenta China Investment Co Ltd, Shanghai, Peoples R China

4.Shaxian Guanzhuang State Owned Forest Farm, Sanming, Peoples R China

5.Fujian Acad Agr Sci, Inst Soil Fertilizer, Fuzhou, Peoples R China

期刊名称：PLOS ONE （ 影响因子：3.7； 五年影响因子：3.8 ）

ISSN： 1932-6203

年卷期： 2023 年 18 卷 12 期

页码：

收录情况： SCI

摘要： Pine wilt disease (PWD) is caused by the pine wood nematode (PWN, Bursaphelenchus xylophilus) and transmitted by a vector insect, the Monochamus alternatus. The PWN has caused much extensive damage to pine-dominated forest ecosystems. Trunk injection of emamectin benzoate (EB) has been found to be the most useful protective measure against the PWN, due to its low effective dose and long residence time in the field. However, the interactions between EB and the host or the environment remain largely unknown, which limits the efficacy and stability of EB in practical field settings. In this study, we investigated the impact on PWN from EB injection for both adult and young host plants (Pinus massoniana) by taking a multi-omics (phenomics, transcriptomics, microbiome, and metabolomics) approach. We found that EB injection can significantly reduce the amount of PWN in both living adult and young pine trees. Additionally, EB was able to activate the genetic response of P. massoniana against PWN, promotes P. massoniana growth and development and resistance to Pine wilt disease, which requires the presence of PWN. Further, the presence of EB greatly increased the accumulation of reactive oxygen species (ROS) in the host plant in a PWN-dependent manner, possibly by affecting ROS-related microbes and metabolites. Moreover, we uncovered the function of EB limiting the consumption of P. massoniana by the JPS. Based on biochemical and gut microbial data, we found that EB can significantly reduces cellulase activity in JPS, whose transcription factors, sugar metabolism, and the phosphotransferase system are also affected. These results document the impact of EB on the entire PWD transmission chain through multi-omics regarding the dominant pine (P. massoniana) in China and provide a novel perspective for controlling PWD outbreaks in the field.

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