文献类型：期刊文献

英文题名：Transcriptome and metabolome profiling in naturally infested Casuarina equisetifolia clones by Ralstonia solanacearum

作者：Wei, Yongcheng[1] Zhang, Yong[1] Meng, Jingxiang[1] Wang, Yujiao[1] Zhong, Chonglu[1] Ma, Haibin[1]

第一作者：魏永成

通信作者：Zhong, CL[1];Ma, HB[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Longdong 510520, Guangdong, Peoples R China

年份：2021

卷号：113

期号：4

起止页码：1906-1918

外文期刊名：GENOMICS

收录：;Scopus(收录号：2-s2.0-85104735568);WOS:【SCI-EXPANDED(收录号:WOS:000669228600004)】；

基金：This study was financially supported by A Specific Program for National Nonprofit Scientific Institutions (CAFYBB2019SZ002) , National Natural Science Foundation of China (NSFC No. 31901334, 31770716) .

语种：英文

外文关键词：Casuarina; Disease response; Flavonoids; Gene expression; Phytohormones; Natural resistance

摘要：Casuarina equisetifolia is an important pioneer tree and suffers from bacterial wilt caused by Ralstonia solanacearum. We collected resistant (R) and susceptible (S) C. equisetifolia clones naturally infected by R. solanacearum and compared their transcriptome and metabolome with a clone (CK) from a non-infested forest, in order to study their response and resistance to bacterial wilt. We identified 18 flavonoids differentially accumulated among the three clonal groups as potential selection biomarkers against R. solanacearum. Flavonoid synthesis-related genes were up-regulated in the resistant clones, probably enhancing accumulation of flavonoids and boosting resistance against bacterial wilt. The down-regulation of auxin/indoleacetic acid-related genes and up-regulation of brassinosteroid, salicylic acid and jasmonic acid-related differentially expressed genes in the R vs CK and R vs S clonal groups may have triggered defense signals and increased expression of defense-related genes against R. solanacearum. Overall, this study provides an important insight into pathogen-response and resistance to bacterial wilt in C. equisetifolia.