Departamento de Botânica, Campus Universitário Reitor João David Ferreira Lima, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, 88040-960, Brazil.
Dipartimento di Scienze della Vita, della Salute e dell'Ambiente, Universita degli Studi dell'Aquila, L'Aquila, Abruzzo, I-67100, Italy.
F1000Res. 2023 Mar 22;12:317. doi: 10.12688/f1000research.131558.1. eCollection 2023.
The Brazilian Atlantic Forest is one of the most biodiverse terrestrial ecoregions of the world. Among its constituents, restinga vegetation makes a particular case, acting as a buffer zone between the oceans and the forest. Covering some 80% of Brazilian coastline (over 7,300 km in length), restinga is a harsh environment where plants and fungi interact in complex ways that just now are beginning to be unveiled. Ectomycorrhizal symbiosis, in particular, plays a so far ungauged and likely underestimated role. We recently described the morpho-anatomical and molecular features of the ectomycorrhizae formed by several basidiomycetous mycobionts on the host plant , but the mycorrhizal biology of restinga is still largely unexplored. Here, we report new data on the ectomycorrhizal fungal symbionts of , based on the collection of sporomata and ectomycorrhizal root tips in restinga stands occurring in southern Brazil. To obtain a broader view of restinga mycorrhizal and ecological potential, we compiled a comprehensive and up-to-date checklist of fungal species reported or supposed to establish ectomycorrhizae on restinga-inhabiting host plants, mainly on the basis of field observations. Our list comprises some 726 records, 74 of which correspond to putative ectomycorrhizal taxa specifically associated with restinga. These include several members of , , / , / , and , as well as hypogeous fungi, like the recently described . Our survey reveals a significant diversity of the restinga ectomycorrhizal mycobiota, indicating the importance of this symbiosis for the ecological functioning of a unique yet poorly known and threatened ecosystem.
巴西大西洋森林是世界上生物多样性最丰富的陆地生态区之一。在其组成部分中，沿海林地植被是一个特殊的例子，它作为海洋和森林之间的缓冲区。沿海林地覆盖了巴西约 80%的海岸线（超过 7300 公里长），是一个恶劣的环境，植物和真菌以复杂的方式相互作用，而这些相互作用刚刚开始被揭示。外生菌根共生关系尤其起到了迄今为止尚未被评估且可能被低估的作用。我们最近描述了几种担子菌真菌共生体在宿主植物上形成的外生菌根的形态解剖学和分子特征，但沿海林地的菌根生物学仍在很大程度上未被探索。在这里，我们根据在巴西南部沿海林地中收集的孢子体和外生菌根根尖，报告了关于 的新的外生菌根真菌共生体数据。为了更全面地了解沿海林地的菌根和生态潜力，我们根据实地观察，编制了一份关于在沿海林地栖息的宿主植物上建立外生菌根的真菌物种的综合、最新清单。我们的清单包括约 726 条记录，其中 74 条记录对应于与沿海林地特别相关的假定外生菌根分类群。这些包括几个科，如、、/、/、和，以及地下真菌，如最近描述的。我们的调查揭示了沿海林地外生菌根真菌生物群的显著多样性，表明这种共生关系对一个独特但知之甚少且受到威胁的生态系统的生态功能的重要性。
