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首页> 外文期刊>Acta Botanica Brasilica >Occurrence of arbuscular mycorrhizal fungi in high altitude sites of the Patagonian Altoandina region in Nahuel Huapi National Park (Argentina)
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Occurrence of arbuscular mycorrhizal fungi in high altitude sites of the Patagonian Altoandina region in Nahuel Huapi National Park (Argentina)

机译：纳韦尔·华皮国家公园（阿根廷）巴塔哥尼亚人高海拔地区的高海拔地区丛枝菌根真菌的发生

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摘要

Knowledge of the occurrence and diversity of arbuscular mycorrhizal fungi (AMF) in National Parks is essential for the establishment of policies for conservation. The aim of this study was to characterize the AMF communities in the Patagonian Altoandina region in Nahuel Huapi National Park, Argentina. We surveyed AMF spores associated with the rhizospheres of 9 plant species in the Patagonian Steppe (PS), Challhuaco Hill (ChH), Catedral Hill (CH), and Tronador Hill (TH) regions and detected a total of 27 Glomeromycota species. Acaulospora laevis was dominant at all sites. The AMF community was dominated by Acaulosporaceae, as regards the number of species and contribution of each one to the total number of spores. Three Glomeromycota families were detected at PS, the site with the lowest elevation; whereas five to six families were detected at ChH, CH, and TH. Cluster analysis indicated that the AMF communities were grouped according to habitat. We concluded that certain patterns of the AMFcommunity structure detected were equivalent to those of high-altitude environments from other studies, while others were unique to the Patagonian region; thus suggesting that historical influences like dispersion and speciation played a critical role in shaping AMF community composition in such high-altitude environments.
机译：了解国家公园中丛枝菌根真菌（AMF）的发生和多样性对于制定保护政策至关重要。这项研究的目的是在阿根廷纳韦尔·华皮国家公园的巴塔哥尼亚阿尔托安迪纳地区，对AMF群落进行特征分析。我们调查了与巴塔哥尼亚草原（PS），查尔科科山（ChH），大教堂山（CH）和特罗纳多山（TH）地区9种植物的根际相关的AMF孢子，共检测到27种球藻。在所有部位，Acaulospora laevis占主导地位。在物种数量和每个物种对孢子总数的贡献方面，AMF群落以棘金藻科为主。在海拔最低的PS处检测到三个球藻科。而在ChH，CH和TH处发现了5至6个家庭。聚类分析表明，AMF群落按栖息地分组。我们得出的结论是，检测到的AMF社区结构的某些模式与其他研究中的高海拔环境等效，而其他模式则是巴塔哥尼亚地区所独有的。因此表明，在这种高海拔环境中，诸如散布和物种形成之类的历史影响在塑造AMF群落组成方面起着关键作用。

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