Comparative phylogeography of Acanthocalyx (Caprifoliaceae) reveals distinct genetic structures in the Himalaya-Hengduan Mountains

被引：9

作者：

Mu, Qi-Yong ^{[1
,3
]}

Yu, Chih-Chieh ^{[1
]}

Wang, Yan ^{[1
]}

Han, Ting-Shen ^{[1
,2
]}

Wang, Hui ^{[4
]}

Ding, Wen-Na ^{[1
,3
]}

Zhang, Qiu-Yue ^{[1
,3
]}

Low, Shook Ling ^{[1
]}

Zheng, Quan-Jing ^{[1
,3
]}

Peng, Chuan ^{[1
,3
]}

Hu, Zheng-Yan ^{[1
,3
]}

Xing, Yao-Wu ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China

[2] Chinese Acad Sci, Ctr Plant Ecol, Core Bot Gardens, Xishuangbanna 666303, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Northwest A&F Univ, Coll Life Sci, Yangling 712100, Shaanxi, Peoples R China

来源：

ALPINE BOTANY | 2022年 / 132卷 / 01期

基金：

美国国家科学基金会;

关键词：

Himalaya-Hengduan Mountains; Alpine plant; Molecular dating; Population dynamics; Peripatric speciation; MEKONG-SALWEEN DIVIDE; GEOGRAPHICAL PATTERN; ISLAND POPULATIONS; TIBETAN PLATEAU; PLANT DIVERSITY; HISTORY; EVOLUTION; DIFFERENTIATION; DISPERSAL; SOFTWARE;

D O I：

10.1007/s00035-021-00262-x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The Himalaya-Hengduan Mountain (HHM) region consists of two global biodiversity hotspots characterized by a high degree of plant endemism. However, little is known about how these endemic species are formed and maintained in relation to the regional geomorphology of the past or current time. Thus, this study investigated the genetic structure of the herbaceous genus Acanthocalyx (Caprifoliaceae) endemic to the HHM to demonstrate if major geographic or ecological barriers in the HHM region have influenced its phylogeographic patterns. Our analyses revealed distinct genetic structures within A. alba and A. nepalensis and indicated that A. delavayi may have recently evolved from isolated peripheral populations of A. nepalensis. In particular, we not only confirmed a well-known genetic structure of alpine plants between the Himalayas and the Hengduan Mountains but also discovered a notable floristic boundary (bounded by 30 degrees to 31 degrees N latitude) within the Hengduan Mountains from A. alba. This study provides new insights into the dispersal and intraspecific genetic variation of Acanthocalyx and highlights the importance of geomorphological features for the diversification of HHM alpine flora.

引用

页码：153 / 168

页数：16

共 94 条

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