Functional traits: Adaption of ferns in forest,Journal of Systematics and Evolution

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Functional traits: Adaption of ferns in forest
Journal of Systematics and Evolution ( IF 3.4 ) Pub Date : 2020-08-04 , DOI: 10.1111/jse.12669
Dongmei Jin ₁ , Xi‐Le Zhou _{1,

2} , Harald Schneider ₃ , Hong‐Jin Wei ₁ , Hong‐Yu Wei _{1,

4} , Yue‐Hong Yan _{1,

5}

Affiliation

Ferns that evolved from 400 million years ago show various functional traits and ecological strategies in extant species, over 80% of which belong to the youngest order Polypodiales. How the functional traits and strategies of ferns have changed during their evolutionary history remains unexplored. Here, we measured functional traits that are sensitive to environmental light and water availability in 345 fern species across fern phylogeny, and reconstructed their evolutionary histories. We found that ferns, mainly Polypodiales, have developed diversified functional traits in response to forest environments. Terrestrial species, especially Thelypteridaceae and Athyriaceae in eupolypods II, since the late Jurassic period, have shown decreased leaf mass per area (LMA) and area-based leaf nitrogen (N_area), but increased mass-based leaf nitrogen (N_mass) compared with early-derived polypods. Epiphytic species, mainly those in Polypodiaceae, have shown reductions in N_mass and individual leaf area (Area) since the late Cretaceous period. The adaption of functional traits of Polypodiales to forest environment may have played a crucial role in fern radiation since the late Jurassic period. Integrative analysis of functional traits, especially numerical ones, may shed new light on plant evolution.

中文翻译：

功能性状：适应森林蕨类植物

从 4 亿年前进化而来的蕨类植物在现存物种中表现出各种功能特征和生态策略，其中 80% 以上属于最年轻的多足目。蕨类植物的功能特征和策略在其进化历史中是如何发生变化的，目前尚不清楚。在这里，我们测量了蕨类植物系统发育中 345 种蕨类植物对环境光和水的可用性敏感的功能特征，并重建了它们的进化历史。我们发现蕨类植物，主要是 Polypodiales，已经发展出多种功能性状来响应森林环境。自侏罗纪晚期以来，陆生物种，尤其是真足类动物 II 中的 Thelypteridaceae 和 Athyriaceae，已表现出单位面积叶质量 (LMA) 和基于面积的叶氮 (N_面积)，但与早期衍生的息肉相比，基于质量的叶氮 (N _mass ) 增加。自白垩纪晚期以来，附生物种，主要是Polypodiaceae中的那些，N_质量和单个叶面积（Area）已经显示出减少。自侏罗纪晚期以来，多足目功能性状对森林环境的适应可能在蕨类辐射中发挥了关键作用。功能性状的综合分析，尤其是数值性状，可能为植物进化提供新的思路。

更新日期：2020-08-04

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