Comparative Genomics and Phylogenetics of Chloroplasts Reveal Lower Rates of Genetic Variation in Mango (Mangifera)
文献类型： 外文期刊
作者： Li, Chuanning 1 ; Huang, Jianfeng 4 ; Wei, Zuan 1 ; Gao, Yuzu 1 ; Yisilam, Gulbar 1 ; Zheng, Enting 1 ; Jiao, Fangfang 1 ; Chu, Zhenzhou 1 ; Su, Ying 2 ; Liao, Caihua 1 ; Lei, Xuefen 1 ; Nong, Jinyu 1 ; Liang, Yonghai 1 ; Lin, Juanyan 1 ; Wei, Yingman 1 ; Zhang, Yu 6 ; Wang, Qiuyan 1 ; Tian, Xinmin 1 ;
作者机构： 1.Guangxi Normal Univ, Key Lab Ecol Rare & Endangered Species & Environm, Minist Educ, Guilin, Peoples R China
2.Guangxi Normal Univ, Coll Life Sci, Guangxi Key Lab Landscape Resources Conservat & Su, Guilin, Peoples R China
3.Guangxi Normal Univ, Guangxi Univ, Coll Life Sci, Engn Res Ctr Bioinformat & Genet Improvement Speci, Guilin, Peoples R China
4.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Natl Key Lab Trop Crop Breeding, Haikou, Peoples R China
5.Xinjiang Univ, Coll Life Sci & Technol, Xinjiang Key Lab Biol Resources & Genet Engn, Urumqi, Peoples R China
6.Guangxi Acad Agr Sci, Guangxi Subtrop Res Inst, Nanning, Peoples R China
关键词： chloroplast genome; comparative genomics; genetic variation; mango; phylogenetic
期刊名称：ECOLOGY AND EVOLUTION （ 影响因子：2.3； 五年影响因子：2.8 ）
ISSN： 2045-7758
年卷期： 2025 年 15 卷 8 期
页码：
收录情况： SCI
摘要： The mango is an important economic crop with a long history of cultivation. However, studies on the characteristics among chloroplast (cp) genomes and the phylogenetic relationships of different mango varieties are still limited. To fill this research gap, we assembled, annotated, and compared the cp genomes of 23 mango germplasms. The mango cp genome exhibited a typical quadripartite structure, ranging in length from 157,604 to 158,949 bp. Each sequence encoded 129 genes, including 84 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. Nucleotide diversity analysis identified three mutation hotspot regions, trnH-GUG-psbA, ycf4-cemA, and ndhF-rpl32, which could be used to develop chloroplast-specific markers. Phylogenetic analysis revealed that mango germplasm can be divided into four major clades, with wild and cultivated varieties forming independent clades. Interestingly, comparative chloroplast genomics and phylogenetics revealed a relatively low rate of genetic variation among cultivated mangoes. This phenomenon may be attributed to extensive interspecific hybridization and gene introgression events during mango domestication. This study provides valuable genomic resources for crop breeding and enhances our understanding of the genetic variation and phylogenetic relationships among different mango varieties.
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