当前位置: X-MOL 学术Cladistics › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Simultaneous diversification of Polypodiales and angiosperms in the Mesozoic
Cladistics ( IF 3.9 ) Pub Date : 2021-04-15 , DOI: 10.1111/cla.12457
Xin-Yu Du, Jin-Mei Lu, Li-Bing Zhang, Jun Wen, Li-Yaung Kuo, Claudine M. Mynssen, Harald Schneider, De-Zhu Li

Comprising about 82% of the extant fern species diversity, Polypodiales are generally believed to have diversified in the Late Cretaceous. We estimated the divergence times of Polypodiales using both penalized likelihood and Bayesian methods, based on a dataset consisting of 208 plastomes representing all 28 families and 14 fossil constraints reflecting current interpretations of fossil record. Our plastome phylogeny recovered the same six major lineages as a recent nuclear phylogeny, but the position of Dennstaedtiineae was different. The present phylogeny showed high resolution of relationships among the families of Polypodiales, especially among those forming the Aspleniineae. The divergence time estimates supported the most recent common ancestor of Polypodiales and its closest relative dating back to the Triassic, establishment of the major lineages in the Jurassic, and a likely accelerated radiation during the late Jurassic and the Early Cretaceous. The estimated divergence patterns of Polypodiales and angiosperms converge to a scenario in which their main lineages were established simultaneously shortly before the onset of the Cretaceous Terrestrial Revolution, and further suggest a pre-Cretaceous hidden history for both lineages. The pattern of simultaneous diversifications shown here elucidate an important gap in our understanding of the Terrestrial Revolution that shaped today’s ecosystems.

中文翻译:

中生代多足目和被子植物的同时多样化

Polypodiales 占现存蕨类物种多样性的约 82%,通常被认为在白垩纪晚期已经多样化。我们使用惩罚似然法和贝叶斯方法估计了 Polypodiales 的发散时间,该数据集由代表所有 28 个科的 208 个质体和反映当前对化石记录的解释的 14 个化石约束组成的数据集。我们的质体系统发育恢复了与最近的核系统发育相同的六个主要谱系,但 Dennstaedtiineae 的位置不同。目前的系统发育显示了Polypodiales科之间的高分辨率关系,特别是在形成Aspleniineae的那些之间。分歧时间估计支持了Polypodiales最近的共同祖先及其可追溯到三叠纪的最近亲属,侏罗纪主要谱系的建立,以及侏罗纪晚期和白垩纪早期可能加速的辐射。估计的Polypodiales 和被子植物的分歧模式会聚到一个场景,其中它们的主要谱系在白垩纪陆地革命开始前不久同时建立,并进一步表明这两个谱系都有白垩纪前的隐藏历史。这里显示的同时多样化的模式阐明了我们对塑造当今生态系统的地球革命的理解中的一个重要差距。估计的Polypodiales 和被子植物的分歧模式会聚到一个场景,其中它们的主要谱系在白垩纪陆地革命开始前不久同时建立,并进一步表明这两个谱系都有白垩纪前的隐藏历史。这里显示的同时多样化的模式阐明了我们对塑造当今生态系统的地球革命的理解中的一个重要差距。估计的Polypodiales 和被子植物的分歧模式会聚到一个场景,其中它们的主要谱系在白垩纪陆地革命开始前不久同时建立,并进一步表明这两个谱系都有白垩纪前的隐藏历史。这里显示的同时多样化的模式阐明了我们对塑造当今生态系统的地球革命的理解中的一个重要差距。
更新日期:2021-04-15
down
wechat
bug