文献类型：期刊文献

英文题名：Dynamic Metabolic Responses of Resistant and Susceptible Poplar Clones Induced by Hyphantria cunea Feeding

作者：Wang, Zheshu[1] Qu, Liangjian[2] Fan, Zhibin[1] Hou, Luxuan[1] Hu, Jianjun[1,3] Wang, Lijuan[1,3]

第一作者：王兆山

通信作者：Wang, LJ[1];Wang, LJ[2]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat, State Forestry Adm,Res Inst Forestry, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Key Lab Forest Protect, Natl Forestry & Grassland Adm, Ecol & Nat Conservat Inst, Beijing 100091, Peoples R China;[3]Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China

年份：2024

卷号：13

期号：9

外文期刊名：BIOLOGY-BASEL

收录：;Scopus(收录号：2-s2.0-85205112084);WOS:【SCI-EXPANDED(收录号:WOS:001326184700001)】；

基金：This research was funded by National Key R&D Program of China (2021YFD1400300).

语种：英文

外文关键词：poplar; induced resistance; insects; Hyphantria cunea; metabolomics

摘要：Poplar trees are significant for both economic and ecological purposes, and the fall webworm (Hyphantria cunea Drury) poses a major threat to their plantation in China. The preliminary resistance assessment in the previous research indicated that there were differences in resistance to the insect among these varieties, with '2KEN8' being more resistant and 'Nankang' being more susceptible. The present study analyzed the dynamic changes in the defensive enzymes and metabolic profiles of '2KEN8' and 'Nankang' at 24 hours post-infestation (hpi), 48 hpi, and 96 hpi. The results demonstrated that at the same time points, compared to susceptible 'Nankang', the leaf consumption by H. cunea in '2KEN8' was smaller, and the larval weight gain was slower, exhibiting clear resistance to the insect. Biochemical analysis revealed that the increased activity of the defensive enzymes in '2KEN8' triggered by the feeding of H. cunea was significantly higher than that of 'Nankang'. Metabolomics analysis indicated that '2KEN8' initiated an earlier and more intense reprogramming of the metabolic profile post-infestation. In the early stages of infestation, the differential metabolites induced in '2KEN8' primarily included phenolic compounds, flavonoids, and unsaturated fatty acids, which are related to the biosynthesis pathways of phenylpropanoids, flavonoids, unsaturated fatty acids, and jasmonates. The present study is helpful for identifying the metabolic biomarkers for inductive resistance to H. cunea and lays a foundation for the further elucidation of the chemical resistance mechanism of poplar trees against this insect.