文献类型：期刊文献

英文题名：Metabolic Responses of Poplar to Apripona germari (Hope) as Revealed by Metabolite Profiling

作者：Wang, Lijuan[1,2] Qu, Liangjian[3] Zhang, Liwei[4] Hu, Jianjun[1,2] Tang, Fang[1,2] Lu, Mengzhu[1,2]

第一作者：王丽娟;Wang, Lijuan

通信作者：Lu, MZ[1];Lu, MZ[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, State Key Lab Tree Genet & Breeding,State Forestr, Beijing 100091, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forest Ecol Environm & Protect, Key Lab Forest Protect, State Forestry Adm, Beijing 100091, Peoples R China;[4]Nanjing Forestry Univ, Minist Educ, Key Lab Forest Genet & Biotechnol, Nanjing 210037, Jiangsu, Peoples R China

年份：2016

卷号：17

期号：6

外文期刊名：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000378799300136)】；

基金：This work was supported by the Key Forestry Public Welfare Project (201304102) and a grant from the Central Public-Interest Scientific Institution Basal Research Fund (RIF2012-07).

语种：英文

外文关键词：induced resistance; poplar; insects; Apripona germari; metabolomics

摘要：Plants have developed biochemical responses to adapt to biotic stress. To characterize the resistance mechanisms in poplar tree against Apripona germari, comprehensive metabolomic changes of poplar bark and xylem in response to A. germari infection were examined by gas chromatography time-of-flight mass spectrometry (GC-TOF/MS). It was found that, four days after feeding (stage I), A. germari infection brought about changes in various metabolites, such as phenolics, amino acids and sugars in both bark and xylem. Quinic acid, epicatechin, epigallocatechin and salicin might play a role in resistance response in bark, while coniferyl alcohol, ferulic acid and salicin contribute resistance in xylem. At feeding stages II when the larvae fed for more than one month, fewer defensive metabolites were induced, but levels of many intermediates of glycolysis and the tricarboxylic acid (TCA) cycle were reduced, especially in xylem. These results suggested that the defense strategies against A. germari might depend mainly on the early defense responses in poplar. In addition, it was found that bark and xylem in infected trees accumulated higher levels of salicylic acid and 4-aminobutyric acid, respectively, these tissues displaying a direct and systemic reaction against A. germari. However, the actual role of the two metabolites in A. germari-induced defense in poplar requires further investigation.