Journey to the west: Migration patterns of the riparian montane genus Myricaria

IF 1.7 4区生物学 Q3 ECOLOGY

Flora Pub Date : 2024-11-09 DOI:10.1016/j.flora.2024.152639

Kailin Sun, Silke Werth

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Abstract

Myricaria Desv. (Tamaricaceae) is a genus of riparian plants found in montane regions throughout Eurasia. We present molecular phylogenies covering the entire Eurasian range of the genus using the chloroplast interspacer region psbA-trnH, the chloroplast region trnL-trnF, and the nuclear ribosomal Internal Transcribed Spacer (ITS). Biogeographical analyses of the DNA sequencing data based on Takhtajan's Floristic Provinces using a Bayesian Binary Markov Chain Monte Carlo reconstruction show that the origin of Myricaria is the Tibetan Floristic Province, specifically in the Qinghai-Tibetan Plateau. A molecular clock analysis was also performed. We estimate that the crown age of Myricaria is around 22.8 Ma and that the common ancestor of all European Myricaria occurred around 8.8 Ma ago. By covering the entire native range of the genus, our analyses confirm previous hypotheses on the origin and migration patterns of Myricaria, namely a central Asian centre of origin, followed by a westward migration to Europe via the central Asian mountain ranges, the Caucasus, and Eastern Europe. The divergence times and migration routes of Myricaria are remarkably similar to that of the genus Hippophae L.

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西行之路河岸山地柽柳属的迁徙模式

柽柳属（Myricaria Desv.）是一种河岸植物，分布于整个欧亚大陆的山地地区。我们利用叶绿体间隔区 psbA-trnH、叶绿体区 trnL-trnF，以及核糖体内部转录间隔区（ITS），对该属的整个欧亚大陆范围进行了分子系统进化分析。利用贝叶斯二元马尔可夫链蒙特卡洛重建法对基于塔克塔扬花卉省的DNA测序数据进行的生物地理学分析表明，Myricaria的原产地是西藏花卉省，特别是青藏高原。我们还进行了分子钟分析。我们估计锦鸡儿属的冠年龄约为 22.8 Ma，所有欧洲锦鸡儿属的共同祖先出现在约 8.8 Ma 之前。我们的分析覆盖了该属的整个原生地，从而证实了之前关于Myricaria起源和迁移模式的假说，即起源中心在中亚，然后通过中亚山脉、高加索和东欧向西迁移到欧洲。Myricaria的分化时间和迁移路线与Hippophae L.属的分化时间和迁移路线极为相似。

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来源期刊

Flora 生物-植物科学

CiteScore

3.30

自引率

10.50%

发文量

130

审稿时长

54 days

期刊介绍： FLORA publishes original contributions and review articles on plant structure (morphology and anatomy), plant distribution (incl. phylogeography) and plant functional ecology (ecophysiology, population ecology and population genetics, organismic interactions, community ecology, ecosystem ecology). Manuscripts (both original and review articles) on a single topic can be compiled in Special Issues, for which suggestions are welcome. FLORA, the scientific botanical journal with the longest uninterrupted publication sequence (since 1818), considers manuscripts in the above areas which appeal a broad scientific and international readership. Manuscripts focused on floristics and vegetation science will only be considered if they exceed the pure descriptive approach and have relevance for interpreting plant morphology, distribution or ecology. Manuscripts whose content is restricted to purely systematic and nomenclature matters, to geobotanical aspects of only local interest, to pure applications in agri-, horti- or silviculture and pharmacology, and experimental studies dealing exclusively with investigations at the cellular and subcellular level will not be accepted. Manuscripts dealing with comparative and evolutionary aspects of morphology, anatomy and development are welcome.