The Jurassic epiphytic macrolichen Daohugouthallus reveals the oldest lichen-plant interaction in a Mesozoic forest ecosystem.
The Jurassic epiphytic macrolichen Daohugouthallus reveals the oldest lichen-plant interaction in a Mesozoic forest ecosystem.
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DOI：
10.1016/j.isci.2022.105770
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发表时间：
2023-01-20
期刊：
影响因子：
5.8
通讯作者：
Wei, Xinli
中科院分区：
文献类型：
--
作者：
Yang, Qiuxia;Wang, Yanyan;Luecking, Robert;Lumbsch, H. Thorsten;Du, Zhenyong;Chen, Yunkang;Bai, Ming;Ren, Dong;Wei, Jiangchun;Li, Hu;Wang, Yongjie;Wei, Xinli
地衣是著名的先锋生物或耐胁迫极端微生物，在陆地生态系统的早期形成中可能发挥核心作用。附生大型地衣对森林生态系统的水分和养分循环有重要作用。但由于化石记录的缺乏，对附生大型地衣的演化历史记录甚少。本文根据新发现的侏罗纪珊瑚藻化石，论证了迄今为止已知最古老的大型地衣生活在裸子植物的一个分支中。我们应用能量色散X射线光谱和几何形态计量学分析来补充验证D. ciliiferus之间的关系，并定量评价其与现存地衣化谱系的关系，为该地衣化石的研究提供了新的途径。根据上述结果，推测D. ciliiferus为一新科，即Daohugouthallaceae。这项工作更新了目前的知识，附生大型地衣的早期进化，揭示了更复杂的地衣植物在侏罗纪森林生态系统的相互作用。提供了最古老的附生地衣的直接化石证据最早的地衣-植物相互作用可追溯到1.65亿年前能量色散X射线光谱法首次用于地衣化石的研究几何形态分析首次用于评估地衣化石的系统学地球历史;古生物学;植物进化
Lichens are well known as pioneer organisms or stress-tolerant extremophiles, potentially playing a core role in the early formation of terrestrial ecosystems. Epiphytic macrolichens are known to contribute to the water- and nutrient cycles in forest ecosystem. But due to the scarcity of fossil record, the evolutionary history of epiphytic macrolichens is poorly documented. Based on new fossil of Jurassic Daohugouthallus ciliiferus, we demonstrate the hitherto oldest known macrolichen inhabited a gymnosperm branch. We applied energy dispersive X-ray spectroscopy and geometric morphometric analysis to complementarily verify lichen affinity of D. ciliiferus and quantitatively assess the potential relationships with extant lichenized lineages, providing new approaches for study of this lichen adpression fossil. Considering the results, and the inferred age of D. ciliiferus, a new family, Daohugouthallaceae, is established. This work updates current knowledge to the early evolution of epiphytic macrolichens and reveals more complex lichen-plant interactions in a Jurassic forest ecosystem. Direct fossil evidence for the oldest epiphytic lichen was provided The earliest lichen-plant interaction traced back to 165 million years ago Energy dispersive X-ray spectroscopy was first used in lichen adpression fossil Geometric morphometric analysis was first used to assess systematics of fossil lichen Earth history; Paleontology; Plant evolution
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