Central Asia revealed as a key area in evolution of Eremurus (Asphodelaceae).

IF 2.6 3区 生物学 Q2 DEVELOPMENTAL BIOLOGY
Evolution & Development Pub Date : 2023-09-02 eCollection Date: 2024-05-01 DOI:10.1016/j.pld.2023.08.004
Dilmurod Makhmudjanov, Sergei Volis, Ziyoviddin Yusupov, Inom Juramurodov, Komiljon Tojibaev, Tao Deng, Hang Sun
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引用次数: 0

Abstract

Eremurus was described at the beginning of the 19th century. However, due to limited sampling and the small number of gene markers to date, its phylogeny and evolution are largely unknown. In this study, we analyzed plastomes from 27 species belonging to 2 subgenera and 3 sections of Eremurus, which are found in Central Asia (its center of diversity) and China. We also analyzed nuclear DNA ITS of 33 species, encompassing all subgenera and sections of the genus in Central Asia, southwest Asia and China. Our findings revealed that the genus was monophyletic, although both subgenera Eremurus and Henningia were found to be paraphyletic. Both plastome and nrDNA-based phylogenetic trees had three clades that did not reflect the current taxonomy of the genus. Our biogeographical and time-calibrated trees suggest that Eremurus originated in the ancient Tethyan area in the second half of the Eocene. Diversification of Eremurus occurred from the early Oligocene to the late Miocene. Paratethys Sea retreat and several orogenetic events, such as the progressive uplift of the Qinghai-Tibet Plateau and surrounding mountain belts (Altai, Pamir, Tian Shan), caused serious topographic and climate (aridification) changes in Central Asia that may have triggered a split of clades and speciation. In this transformed Central Asia, speciation proceeded rapidly driven mainly by vicariance caused by numerous mountain chains and specialization to a variety of climatic, topographic and soil conditions that exist in this region.

中亚被揭示为 Eremurus(天南星科)进化的关键地区。
Eremurus 在 19 世纪初被描述。然而,由于取样有限和迄今为止基因标记的数量较少,其系统发育和进化在很大程度上是未知的。在这项研究中,我们分析了分布于中亚(其多样性中心)和中国的 27 个物种的质粒,这些物种隶属于 Eremurus 的 2 个亚属和 3 个科。我们还分析了 33 个物种的核 DNA ITS,涵盖了该属在中亚、西南亚和中国的所有亚属和分支。我们的研究结果表明,该属是单系的,但发现Eremurus和Henningia两个亚属是旁系的。基于质粒和 nrDNA 的系统发生树有三个支系,这并不反映该属目前的分类情况。我们的生物地理和时间校准树表明,Eremurus起源于始新世后半期的古泰西地区。Eremurus的多样化发生在渐新世早期到中新世晚期。副特提斯海(Paratethys Sea)的退缩和一些造山运动事件,如青藏高原及其周围山地带(阿尔泰山、帕米尔高原、天山)的逐渐隆起,造成了中亚地区严重的地形和气候(干旱化)变化,可能引发了支系的分裂和物种的分化。在这一转变后的中亚地区,物种的快速分化主要是由众多山系造成的沧海桑田以及对该地区存在的各种气候、地形和土壤条件的特化所驱动的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Evolution & Development
Evolution & Development 生物-发育生物学
CiteScore
6.30
自引率
3.40%
发文量
26
审稿时长
>12 weeks
期刊介绍: Evolution & Development serves as a voice for the rapidly growing research community at the interface of evolutionary and developmental biology. The exciting re-integration of these two fields, after almost a century''s separation, holds much promise as the focus of a broader synthesis of biological thought. Evolution & Development publishes works that address the evolution/development interface from a diversity of angles. The journal welcomes papers from paleontologists, population biologists, developmental biologists, and molecular biologists, but also encourages submissions from professionals in other fields where relevant research is being carried out, from mathematics to the history and philosophy of science.
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