文献类型：期刊文献

英文题名：Metabolome and Transcriptome Association Analysis Reveals Regulation of Flavonoid Biosynthesis by Overexpression of LaMIR166a in Larix kaempferi (Lamb.) Carr

作者：Fan, Yanru[1,2] Li, Zhexin[3] Zhang, Lifeng[1,2] Han, Suying[4] Qi, Liwang[1,2]

通信作者：Qi, LW[1];Qi, LW[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, Natl Forestry & Grassland Adm, Beijing 100091, Peoples R China;[3]Chongqing Univ Arts & Sci, Chongqing Key Lab Econ Plant Biotechnol, Coll Landscape Architecture & Life Sci, Inst Special Plants, Chongqing 402160, Peoples R China;[4]Chinese Acad Forestry, Res Inst Forest Ecol Environm & Protect, Beijing 100091, Peoples R China

年份：2020

卷号：11

期号：12

起止页码：1-16

外文期刊名：FORESTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000601935400001)】；

基金：This research was funded by the National Transgenic Major Program of China (2018ZX08020-003), the National Natural Science Foundation of China (31600544 and 31330017), the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2019SY011).

语种：英文

外文关键词：MiR166a; Larix kaempferi (Lamb; ) Carr; Somatic embryos; metabolism

摘要：Somatic embryogenesis is an ideal model process for studying early plant development. Embryonic cell lines of Larix kaempferi (Lamb.) Carr overexpressing LaMIR166a were obtained in our previous study. Here, a combination of de novo transcriptomics and extensively targeted metabolomics was used to study the transcriptional profiles and metabolic changes in wild-type and LaMIR166a-overexpressed embryonic cell lines. A total of 459 metabolites were found in the wild-type and transgenic cell lines. Compared to those in the wild-type cell lines, transcripts and metabolites were significantly altered in the LaMIR166a-overexpressed cell lines. Among differentially expressed genes (DEGs), phenylalanine and flavonoid synthesis genes were significantly enriched, and among differentially accumulated metabolites (DAMs), phenolic acids and flavonoids accumulated in particularly high amounts. Thus, the flavonoid biosynthetic pathway seems to be the most abundant pathway in response to LaMIR166a overexpression. Based on the Kyoto Encyclopedia of Genes and Genomes database, the association analysis of metabolome and transcriptome data showed that flavonoid biosynthesis and plant hormone signal transduction processes were significantly changed in miR166a-overexpression lines, suggesting that miR166 might be involved in these processes. The present study identified a number of potential metabolites associated with LaMIR166a overexpression, providing a significant foundation for a better understanding of the regulatory mechanisms underlying miR166.