The rise of angiosperm-dominated herbaceous floras: Insights from Ranunculaceae.
The rise of angiosperm-dominated herbaceous floras: Insights from Ranunculaceae.
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以被子植物为主的草本植物区系的兴起：来自毛茛科的见解
DOI：
10.1038/srep27259
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发表时间：
2016-06-02
影响因子：
4.6
通讯作者：
Chen ZD
中科院分区：
文献类型：
--
作者：
Wang W;Lin L;Xiang XG;Ortiz Rdel C;Liu Y;Xiang KL;Yu SX;Xing YW;Chen ZD
被子植物的兴起被认为是白垩纪陆地生态系统革命的导火索。然而，被子植物占主导地位的草本植物区系（ADHFs）崛起的时间框架缺乏。在这里，我们使用毛茛科（毛茛科）作为代理来提供对ADHFs兴起的见解。综合运用系统发育、分子定年、祖先状态推断和多样性分析等方法，对毛茛科植物的早期进化史进行了推测。研究发现毛茛科植物在108 ~ 90ma之间开始在森林中分化。多样性率在坎帕期显著提高，主要是由于非森林谱系的快速分化，但在白垩纪-古近纪界线上没有变化。毛茛科植物的数据表明，在白垩纪中期，森林adhf可能几乎与被子植物主导的森林同时出现，而非森林adhf则在白垩纪陆地革命末期出现。此外，adhf相对不受白垩纪-古近纪大灭绝的影响。
The rise of angiosperms has been regarded as a trigger for the Cretaceous revolution of terrestrial ecosystems. However, the timeframe of the rise angiosperm-dominated herbaceous floras (ADHFs) is lacking. Here, we used the buttercup family (Ranunculaceae) as a proxy to provide insights into the rise of ADHFs. An integration of phylogenetic, molecular dating, ancestral state inferring and diversification analytical methods was used to infer the early evolutionary history of Ranunculaceae. We found that Ranunculaceae became differentiated in forests between about 108–90 Ma. Diversification rates markedly elevated during the Campanian, mainly resulted from the rapid divergence of the non-forest lineages, but did not change across the Cretaceous-Paleogene boundary. Our data for Ranunculaceae indicate that forest-dwelling ADHFs may have appeared almost simultaneously with angiosperm-dominated forests during the mid-Cretaceous, whereas non-forest ADHFs arose later, by the end of the Cretaceous terrestrial revolution. Furthermore, ADHFs were relatively unaffected by the Cretaceous-Paleogene mass extinction.