文献类型：期刊文献

英文题名：The genome of oil-Camellia and population genomics analysis provide insights into seed oil domestication

作者：Lin, Ping[1,2] Wang, Kailiang[2] Wang, Yupeng[3] Hu, Zhikang[1,2] Yan, Chao[1,2] Huang, Hu[1,2] Ma, Xianjin[1,2] Cao, Yongqing[2] Long, Wei[2] Liu, Weixin[2] Li, Xinlei[2] Fan, Zhengqi[2] Li, Jiyuan[2] Ye, Ning[3] Ren, Huadong[1,2] Yao, Xiaohua[1,2] Yin, Hengfu[1,2]

第一作者：林萍

通信作者：Yao, XH[1];Yin, HF[1];Yao, XH[2];Yin, HF[2]|[a00051e90d3009f1c7c75]姚小华;

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China;[2]Chinese Acad Forestry, Res Inst Subtrop Forestry, Key Lab Forest Genet & Breeding, Hangzhou 311400, Zhejiang, Peoples R China;[3]Nanjing Forestry Univ, Coll Informat Sci & Technol, Nanjing 210037, Peoples R China

年份：2022

卷号：23

期号：1

外文期刊名：GENOME BIOLOGY

收录：;Scopus(收录号：2-s2.0-85122755528);WOS:【SCI-EXPANDED(收录号:WOS:000740975300003)】；

基金：This research was supported by The National Key R&D Program of China (2018YFD1000603-2 and 2019YFD1000400), Nonprofit Research Projects (CAFYBB2017ZX001-7) of Chinese Academy of Forestry, and National Science Foundation of China (31870578, 31770719).

语种：英文

外文关键词：Oil-Camellia; Genome; Population genomics; Genome-wide association analysis; Oil biosynthesis; Domestication

摘要：Background As a perennial crop, oil-Camellia possesses a long domestication history and produces high-quality seed oil that is beneficial to human health. Camellia oleifera Abel. is a sister species to the tea plant, which is extensively cultivated for edible oil production. However, the molecular mechanism of the domestication of oil-Camellia is still limited due to the lack of sufficient genomic information. Results To elucidate the genetic and genomic basis of evolution and domestication, here we report a chromosome-scale reference genome of wild oil-Camellia (2.95 Gb), together with transcriptome sequencing data of 221 cultivars. The oil-Camellia genome, assembled by an integrative approach of multiple sequencing technologies, consists of a large proportion of repetitive elements (76.1%) and high heterozygosity (2.52%). We construct a genetic map of high-density corrected markers by sequencing the controlled-pollination hybrids. Genome-wide association studies reveal a subset of artificially selected genes that are involved in the oil biosynthesis and phytohormone pathways. Particularly, we identify the elite alleles of genes encoding sugar-dependent triacylglycerol lipase 1, beta-ketoacyl-acyl carrier protein synthase III, and stearoyl-acyl carrier protein desaturases; these alleles play important roles in enhancing the yield and quality of seed oil during oil-Camellia domestication. Conclusions We generate a chromosome-scale reference genome for oil-Camellia plants and demonstrate that the artificial selection of elite alleles of genes involved in oil biosynthesis contributes to oil-Camellia domestication.