文献类型：期刊文献

中文题名：The Larix kaempferi genome reveals new insights into wood properties

作者：Chao Sun[1,2] Yun-Hui Xie[1,2] Zhen Li[3,4] Yan-Jing Liu[1] Xiao-Mei Sun[1,2] Jing-Jing Li[5] Wei-Peng Quan[5] Qing-Yin Zeng[1] Yves Van de Peer[3,4,6] Shou-Gong Zhang[1,2]

第一作者：孙超

机构：[1]State Key Laboratory of Tree Genetics and Breeding,Chinese Academy of Forestry,Beijing 100091,China;[2]Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China;[3]Department of Plant Biotechnology and Bioinformatics,Ghent University,Gent B‐9052,Belgium;[4]VIB Center for Plant Systems Biology,Ghent B‐9052,Belgium;[5]Nextomics Biosciences Co.,Ltd,Wuhan 430073,China;[6]Department of Biochemistry,Genetics and Microbiology,Pretoria,South Africa

年份：2022

卷号：64

期号：7

起止页码：1364-1373

中文期刊名：植物学报：英文版

外文期刊名：Journal of Integrative Plant Biology

收录：CSTPCD;;Scopus;CSCD:【CSCD2021_2022】；PubMed;

基金：funded by the Forestry Industry Research Special Funds for Public Welfare Projects(201504104);National Natural Science Foundation of China(31901335);Fundamental Research Funds for the Central Non-profit Research Institution of CAF(CAFYBB2017QA001,CAFYBB 2018ZY001-4,LYSZX202002);National Transgenic Major Program(2018ZX08020-003);funded by a postdoctoral fellowship from the Special Research Fund of Ghent University(BOFPDO2018001701)。

语种：英文

中文关键词：evolution;gene expression;genome;Larix kaempferi;wood properties

分类号：S791.22

摘要：Here,through single-molecule real-time sequencing,we present a high-quality genome sequence of the Japanese larch(Larix kaempferi),a conifer species with great value for wood production and ecological afforestation.The assembled genome is 10.97 Gb in size,harboring 45,828 protein-coding genes.Of the genome,66.8%consists of repeat sequences,of which long terminal repeat retrotransposons are dominant and make up 69.86%.We find that tandem duplications have been responsible for the expansion of genes involved in transcriptional regulation and stress responses,unveiling their crucial roles in adaptive evolution.Population transcriptome analysis reveals that lignin content in L.kaempferi is mainly determined by the process of monolignol polymerization.The expression values of six genes(LkC OMT7,LkC OMT8,LkL AC23,LkL AC102,LkP RX148,and LkP RX166)have significantly positive correlations with lignin content.These results indicated that the increased expression of these six genes might be responsible for the high lignin content of the larches’wood.Overall,this study provides new genome resources for investigating the evolution and biological function of conifer trees,and also offers new insights into wood properties of larches.