Mucoromycotina fine root endophyte fungi form nutritional mutualisms with vascular plants
Mucoromycotina fine root endophyte fungi form nutritional mutualisms with vascular plants
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毛霉亚门细根内生真菌与维管植物形成营养互利共生
DOI：
10.1101/531103
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Hoysted G
中科院分区：
文献类型：
--
作者：
Hoysted G
真菌和植物的亲密共生关系在全球范围内广泛存在，自5亿年前植物陆地化以来，真菌和植物一直在推动陆地生物地球化学过程。近年来，人们发现了真菌和非维管植物的古老谱系中迄今未知的营养相互作用，尽管它们在维管植物中的范围和功能意义仍不确定。在这里，我们提供了早期分化维管植物（Lycopodiella ata）和Mucoromycotina （Endogonales）细根内生真菌之间碳氮交换的证据。此外，我们证明了相同的真菌共生体定殖邻近的无维管植物和开花植物。这些发现从根本上改变了我们对现代陆地生态系统中地下植物-真菌共生的生理学、相互关系和生态学的理解，揭示了毛霉属真菌共生体在维管植物中的营养作用。
Fungi and plants have engaged in intimate symbioses that are globally widespread and have driven terrestrial biogeochemical processes since plant terrestrialization >500 million years ago. Recently, hitherto unknown nutritional mutualisms involving ancient lineages of fungi and nonvascular plants have been discovered, although their extent and functional significance in vascular plants remain uncertain. Here, we provide evidence of carbon-for-nitrogen exchange between an early-diverging vascular plant (Lycopodiella inundata) and Mucoromycotina (Endogonales) fine root endophyte fungi. Furthermore, we demonstrate that the same fungal symbionts colonize neighboring nonvascular and flowering plants. These findings fundamentally change our understanding of the physiology, interrelationships, and ecology of underground plant–fungal symbioses in modern terrestrial ecosystems by revealing the nutritional role of Mucoromycotina fungal symbionts in vascular plants.