热带气候的反复迁移先于全基因组的复制。

IF 8.3 1区 生物学 Q1 PLANT SCIENCES
New Phytologist Pub Date : 2024-10-23 DOI:10.1111/nph.20200
Tom Carruthers,Deise J P Gonçalves,Pan Li,Andre S Chanderbali,Christopher W Dick,Peter W Fritsch,Drew A Larson,Douglas E Soltis,Pamela S Soltis,William N Weaver,Stephen A Smith
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引用次数: 0

摘要

虽然开花植物在几乎所有陆地气候条件下都有多样化,但气候限制了单个品系的分布。克服气候限制可能与多种进化现象有关,包括全基因组复制(WGD)、基因树冲突和生活史变化。气候的变化也可能促进了开花植物多样化率的提高。我们研究了开花植物纲(Ericales)中的气候变迁,该植物纲由大约 14000 个物种组成,具有不同的气候耐受性。我们从转录组数据、64 个叶绿体基因位点和 Angiosperms353 个核基因位点估算出系统发生树,分别包含 147、4508 和 2870 个 Ericales 物种。我们利用这些系统发生树来分析气候变迁如何与 WGD、基因树冲突、生活史和多样化率相关联。系统发生树的早期分支极短,基因树冲突程度高,至少有一个 WGD。在这些早期分支的后代中,气候转变(主要是脱离热带气候)、进一步的 WGD 和生活史之间存在着显著的联系。极短的早期分支及其相关的基因树冲突和 WGD 似乎是众多物种丰富的 Ericales 支系爆炸性起源的基础。在这些物种丰富的支系中,不同气候耐受性的进化与 WGD 和生活史密切相关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Repeated shifts out of tropical climates preceded by whole genome duplication.
While flowering plants have diversified in virtually every terrestrial clime, climate constrains the distribution of individual lineages. Overcoming climatic constraints may be associated with diverse evolutionary phenomena including whole genome duplication (WGD), gene-tree conflict, and life-history changes. Climatic shifts may also have facilitated increases in flowering plant diversification rates. We investigate climatic shifts in the flowering plant order Ericales, which consists of c. 14 000 species with diverse climatic tolerances. We estimate phylogenetic trees from transcriptomic data, 64 chloroplast loci, and Angiosperms353 nuclear loci that, respectively, incorporate 147, 4508, and 2870 Ericales species. We use these phylogenetic trees to analyse how climatic shifts are associated with WGD, gene-tree conflict, life-history, and diversification rates. Early branches in the phylogenetic trees are extremely short, and have high levels of gene-tree conflict and at least one WGD. On lineages descended from these early branches, there is a significant association between climatic shifts (primarily out of tropical climates), further WGDs, and life-history. Extremely short early branches, and their associated gene-tree conflict and WGDs, appear to underpin the explosive origin of numerous species rich Ericales clades. The evolution of diverse climatic tolerances in these species rich clades is tightly associated with WGD and life-history.
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来源期刊
New Phytologist
New Phytologist 生物-植物科学
自引率
5.30%
发文量
728
期刊介绍: New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.
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