文献类型：期刊文献

英文题名：The Populus koreana genome provides insights into the biosynthesis of plant aroma

作者：Shen, Le[1] Ding, Changjun[1] Zhang, Weixi[1] Zhang, Tengqian[1] Li, Zhenghong[1] Zhang, Jing[1] Chu, Yanguang[1] Su, Xiaohua[1]

第一作者：Shen, Le

通信作者：Chu, YG[1];Su, XH[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Forest Genet & Tree Breeding, Key Lab Tree Breeding & Cultivat Natl Forestry & G, Beijing 100091, Peoples R China

年份：2023

卷号：197

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000952578700001)】；

基金：Our research was supported by the Basic Research Fund of CAF (Grant No. CAFYBB2020SZ002) , the National Key Research and Devel- opment Program of China (Grant No. 2021YFD2201205) , and the Na- tional Natural Science Foundation of China (Grant No.31870662) . We would like to thank Dr Xin Qiao (Nanjing Agricultural University) and Shuai Nie (Beijing Forestry University) for their support about the data processing.

语种：英文

外文关键词：Genome assembly; Populus koreana; Volatiles; Cold stress; Terpene synthase

摘要：Populus koreana is a tree species that shows unique fragrance traits because of the emission of volatiles from tissues, thus it has great potential for the study of aroma in forest trees. The genome of P. koreana, with a size of 429.47 Mb and N50 contigs of 4.97 Mb, was assembled into 19 chromosomes and 38,075 genes were predicted. P. koreana and Populus trichocarpa diverged from a common ancestor before 6.14 million years ago (Mya). Metabolome results suggested that the main aroma components terpenes and esters are significantly enriched in P. koreana leaves. Compared with that of P. trichocarpa, the P. koreana genome contains many more terpene synthase genes (TPSs), which encode proteins enriched in terpenoid-related metabolic pathways associated with the production of plant volatiles. Among these TPS genes, TPS-a/b might largely contribute to the synthesis of abundant sesquiterpenes and monoterpenes. Our results provide a valuable genomic resource for the further study of the production of aromatic volatiles by forest trees. Gene families related to terpenoid biosynthesis are substantially expanded in P. koreana, mainly resulting from tandem duplications and lineage specific whole-genome duplications. The evidence presented in this study increases our understanding of the evolution and diversity of plant volatile compounds, which could accelerate the selective breeding on traits of interest in Populus. Data availability statement: The datasets of transcriptome and genome were uploaded in NCBI and China national center for bioinformation, respectively. The accession numbers were PRJCA012303, CRA012924, and PRJNA886606 (NCBI).