The tetraploid Camellia oleifera genome provides insights into evolution, agronomic traits, and genetic architecture of oil Camellia plants

文献类型： 外文期刊

第一作者： Zhang, Lin

作者： Zhang, Lin;Gong, Wenfang;Zhao, Guang;Xiao, Shixin;Lin, Hai;Li, Yanmin;Hu, Guanxing;Ye, Ziqi;Yang, Yekun;Yuan, Deyi;Zhang, Lin;Gong, Wenfang;Xiao, Shixin;Yuan, Deyi;Shi, Yan;Wang, Haifeng;Liao, Zhenyang;Zhang, Shengcheng;Zhang, Xingtan;Xia, Zhiqiang;Cao, Heping;Zhong, Shengjun

作者机构：

期刊名称：CELL REPORTS （ 影响因子：6.9； 五年影响因子：8.1 ）

ISSN： 2211-1247

年卷期： 2024 年 43 卷 11 期

页码：

收录情况： SCI

摘要： Camellia oleifera is an economically important woody oil plant. Complex ploidy and lack of genomic information have seriously hindered the molecular breeding of C. oleifera. Here, we present an 11.43-Gb haplotyperesolved, chromosome-level genome assembly of tetraploid C. oleifera ( COL-tetra). Methods employed in this study support the conclusion that COL-tetra is an autotetraploid and probably originates from genome doubling of the diploid C. brevistyla. In addition, DNA methylation plays a significant role in imbalanced allelic expression and seed development. Genetic divergence analyses reveal significant differentiation signals for flowering time between spring-flowering and autumn-flowering oil Camellia species, which probably account for reproductive isolation between species with distinct flowering times. Strong introgression signals are detected between COL-tetra and C. sasanqua and between C. vietnamensis and COL-hexa, which might affect the development of agronomic traits and environmental adaptability. This study provides valuable insights into the evolution, agronomic trait development, and genetic architecture of oil Camellia plants.

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