Plastome phylogenomics of the East Asian endemic genus Dobinea

作     者：Changkun Liu Jin Yang Lei Jin Shuying Wang Zhenyan Yang Yunheng Ji Changkun Liu;Jin Yang;Lei Jin;Shuying Wang;Zhenyan Yang;Yunheng Ji

作者机构：CAS Key Laboratory for Plant Diversity and Biogeography of East AsiaKunming Institute of BotanyChinese Academy of SciencesKunming650201China School of Life ScienceYunnan UniversityKunming650091China School of Traditional Chinese MedicineGuangdong Pharmaceutical UniversityGuangzhou510006China 

出 版 物：《Plant Diversity》 (植物多样性（英文版）)

年 卷 期：2021年第43卷第1期

页      面：35-42页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 071007[理学-遗传学] 0901[农学-作物学] 0902[农学-园艺学] 0713[理学-生态学] 

基　　金：supported by the Major program of National Natural Science Foundation of China(31590823)。 

主　　题：Neo-endemism Divergence Dobinea delavayi Dobinea vulgaris Dobineeae Anacardiaceae 

摘      要：Dobinea is a dioecious genus endemic to East Asia that consists of two extant species:Dobinea delavayi and Dobinea vulgaris.Although the genus is morphologically distinct,its phylogenetic position remains controversial.In this study,we investigated the phylogenetic relationships between Dobinea and related taxa by sequencing the whole plastome DNA sequences for both extant species of Dobinea and comparing them to published plastomes within Sapindales.The complete plastomes of D.vulgaris and D.delavayi were 160,683 and 160,154 base pairs(bp)in length,including a pair of inverted repeat regions(IRs,26,889 and 26,759 bp)divided by the large single-copy region(LSC,87,962 and 87,555 bp)and small single-copy region(SSC,18,943 and 19,081 bp),and identically encoded 113 unique genes(79 protein-coding genes,30 tRNAs,and 4 rRNA genes).Plastid phylogenomic analyses showed that Dobinea was a well-supported monophyletic unit and sister to the clade including tribes Anacardieae and Rhoideae,which suggests that Dobinea is a member of Anacardiaceae.In addition,molecular dating inferred D.delavayi and D.vulgaris diverged approximately 10.76 Ma,suggesting the divergence between these two species may have been driven by the intensification of the Asian summer monsoon and the establishment of distinct monsoon regimes in East Asia.