7种茄科植物染色体的演化关系研究  

The Evolutionary Relationship of Chromosomes in Seven Solanaceae Species

作　　者：付钰 张令奎 黄议乐 杨印庆 陈姝敏 张亢 李良俊[1] 程锋[2] FU Yu;ZHANG Lingkui;HUANG Yile;YANG Yinqing;CHEN Shumin;ZHANG Kang;LI Liangjun;CHENG Feng(College of Horticulture and Plant Protection,Yangzhou University,Yangzhou 225000,China;Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China)

机构地区：[1]扬州大学园艺与植物保护学院,江苏扬州225000 [2]中国农业科学院蔬菜花卉研究所,北京100081

出　　处：《园艺学报》2023年第5期1009-1024,共16页Acta Horticulturae Sinica

基　　金：国家自然科学基金项目(32102382,32102386);创新工程21生物信息学重大任务(国产化)项目(2060302)。

摘　　要：为了追溯茄科(Solanaceae)物种染色体的演化关系,对7种茄科物种进行了系统的比较基因组学分析,利用模式植物番茄的基因组为参考模板,全面鉴定7个物种间的基因组共线性关系,以此为基础建立了茄科的基因组片段单元系统,并基于该系统重建了具有12条染色体的祖先基因组,阐明祖先基因组主要通过基因组片段的易位和倒位逐步形成目前的茄科基因组结构,且这些重排事件多发生在着丝粒等重复序列富集的区域。研究结果为深入认识茄科以及其他植物的基因组进化和物种分化等提供理论参考。In order to trace the evolution of chromosomes of Solanaceae species,a systematic comparative genomic analysis was carried out on seven Solanaceae species. Using the genome of model plant tomato as a reference template,the collinear relationship among seven species of Solanaceae were comprehensively identified,and the genome fragment unit system of Solanaceae was established. Based on this system,the ancestral genome of Solanaceae with 12 chromosomes was reconstructed. The results showed that the ancestral genome gradually formed the current genome structure of Solanaceae mainly through translocation and inversion of genome fragments,and these rearrangement events mostly occurred in the regions of centromere and other repeated sequences were enriched. This study provided an important theoretical reference for further understanding the genome evolution and species differentiation of Solanaceae and other plants.

关 键 词：茄科 比较基因组 祖先基因组 染色体重排 着丝粒 重复序列 

分 类 号：S641[农业科学—蔬菜学]