文献类型： 外文期刊

作者： Li, Wenying ¹ ; Dong, Xiang ² ; Zhang, Xingtan ⁴ ; Cao, Jie ¹ ; Liu, Meilan ¹ ; Zhou, Xu ⁵ ; Long, Hongxu ¹ ; Cao, Heping ⁶ ; Lin, Hai ¹ ; Zhang, Lin ¹ ;

作者机构： 1.Cent South Univ Forestry & Technol, Key Lab Cultivat & Protect Nonwood Forest Trees, Minist Educ, Shaoshan South Rd 498, Changsha 410004, Hunan, Peoples R China

2.Cent South Univ Forestry & Technol, Key Lab Nonwood Forest Prod Forestry Minist, Shaoshan South Rd 498, Changsha 410004, Hunan, Peoples R China

3.Huanggang Normal Univ, Coll Biol & Agr Resources, 146 Xingang 2nd Rd, Huanggang 438000, Hubei, Peoples R China

4.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr,Genome Anal Lab M, 7 Pengfei Rd, Shenzhen 518120, Peoples R China

5.Cent South Univ Forestry & Technol, Coll Landscape Architecture, Shaoshan South Rd 498, Changsha 410004, Hunan, Peoples R China

6.US Dept Agr, Southern Reg Res Ctr, Agr Res Serv, 1100 Allen Toussaint Blvd, New Orleans, LA 70124 USA

期刊名称：HORTICULTURE RESEARCH （ 影响因子：7.6； 五年影响因子：8.2 ）

ISSN： 2662-6810

年卷期： 2024 年 11 卷 7 期

页码：

收录情况： SCI

摘要： Vernicia montana is a dioecious plant widely cultivated for high-quality tung oil production and ornamental purposes in the Euphorbiaceae family. The lack of genomic information has severely hindered molecular breeding for genetic improvement and early sex identification in V. montana. Here, we present a chromosome-level reference genome of a male V. montana with a total size of 1.29 Gb and a contig N50 of 3.69 Mb. Genome analysis revealed that different repeat lineages drove the expansion of genome size. The model of chromosome evolution in the Euphorbiaceae family suggests that polyploidization-induced genomic structural variation reshaped the chromosome structure, giving rise to the diverse modern chromosomes. Based on whole-genome resequencing data and analyses of selective sweep and genetic diversity, several genes associated with stress resistance and flavonoid synthesis such as CYP450 genes and members of the LRR-RLK family, were identified and presumed to have been selected during the evolutionary process. Genome-wide association studies were conducted and a putative sex-linked insertion and deletion (InDel) (Chr 2: 102 799 917-102 799 933 bp) was identified and developed as a polymorphic molecular marker capable of effectively detecting the gender of V. montana. This InDel is located in the second intron of VmBASS4, suggesting a possible role of VmBASS4 in sex determination in V. montana. This study sheds light on the genome evolution and sex identification of V. montana, which will facilitate research on the development of agronomically important traits and genomics-assisted breeding.