文献类型：期刊文献

英文题名：Genome-wide analysis of lncRNA and mRNA expression and endogenous hormone regulation during tension wood formation inCatalpa bungei

作者：Xiao, Yao[1] Yi, Fei[1] Ling, Juanjuan[1] Yang, Guijuan[1] Lu, Na[1] Jia, Zirui[1] Wang, Junchen[1] Zhao, Kun[2] Wang, Junhui[1] Ma, Wenjun[1]

第一作者：Xiao, Yao

通信作者：Ma, WJ[1]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat State Forestry &, Res Inst Forestry, Beijing 100091, Peoples R China;[2]Luoyang Acad Agr & Forestry Sci, Luoyang 471002, Henan, Peoples R China

年份：2020

卷号：21

期号：1

外文期刊名：BMC GENOMICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000568502200001)】；

基金：This work is supported by a National Key Research and Development Project of China "The genomic basis of secondary growth in trees" (2016YFD0600101).

语种：英文

外文关键词：Tension wood; Catalpa bungei; Phytohormones; lncRNA; Regulatory network

摘要：Background Phytohormones are the key factors regulating vascular development in plants, and they are also involved in tension wood (TW) formation. Although the theory of hormone distribution in TW formation is widely supported, the effects of endogenous hormones on TW formation have not yet been assessed. In this study, TW formation was induced inCatalpa bungeiby artificial bending. The phytohormone content of TW, opposite wood (OW) and normal wood (NW) was determined using liquid chromatography-mass spectrometry (LC-MS), and transcriptome sequencing was performed. The hormone content and related gene expression data were comprehensively analyzed. Results The results of analyses of the plant hormone contents indicated significantly higher levels of cis-zeatin (cZ), indoleacetic acid (IAA) and abscisic acid (ABA) in TW than in OW. Genes involved in the IAA and ABA synthesis pathways, such asALDH(evm.model.group5.1511) andUGT(evm.model.scaffold36.20), were significantly upregulated in TW. and the expression levels ofARF(evm.model.group5.1332),A-ARR(evm.model.group0.1600), andTCH4(evm.model.group2.745), which participate in IAA, cZ and Brassinolide (BR) signal transduction, were significantly increased in TW. In particular,ARFexpression may be regulated by long noncoding RNAs (lncRNAs) and the HD-ZIP transcription factor ATHB-15. Conclusions We constructed a multiple hormone-mediated network ofC. bungeiTW formation based on hormone levels and transcriptional expression profiles were identified during TW formation.