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首页> 美国卫生研究院文献>Scientific Reports >Ectomycorrhizal fungal communities associated with Populus simonii and Pinus tabuliformis in the hilly-gully region of the Loess Plateau China
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Ectomycorrhizal fungal communities associated with Populus simonii and Pinus tabuliformis in the hilly-gully region of the Loess Plateau China

机译：黄土高原丘陵沟壑区与小叶杨和油松相关的菌根真菌群落

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摘要

The Loess Plateau region of northwestern China has unique geological and dry/semi-dry climate characteristics. However, knowledge about ectomycorrhizal fungal (EMF) communities in the Loess Plateau is limited. In this study, we investigated EMF communities in Populus simonii and Pinus tabuliformis patches within the forest-steppe zone, in pine forests within the forest zone, and the transitional zone between them. We revealed high species richness (115 operational taxonomic units [OTUs]) of indigenous EMF resources at the Loess Plateau, of which Tomentella (35 OTUs), Inocybe (16), Sebacina (16), and Geopora (7) were the most OTU-rich lineages. EMF richness within the forest-steppe zone and the transitional zone was limited, while the natural pine forest maintained diverse EMF communities in the forest zone. The changes of EMF community richness and composition along arid eco-zones were highlighted for the complex factors including precipitation, soil factors, host, DBH, and altitude. Indicator analysis revealed that some EMF showed clear host preference and some taxa, i.e., genera Geopora and Inocybe, were dominant in drought and alkaline-saline conditions attributed to their environmental preference. This study revealed that EMF communities were quite limited in the forest-steppe zone, while the forest region contained diverse EMF communities in the Loess Plateau.
机译：中国西北的黄土高原地区具有独特的地质和干/半干气候特征。然而，关于黄土高原的外生菌根真菌（EMF）群落的知识是有限的。在这项研究中，我们调查了森林草原带内的小叶杨和油松斑块，森林带内的松树林以及它们之间的过渡带中的EMF群落。我们发现了黄土高原本地EMF资源的物种丰富度很高（115个操作生物分类单位[OTUs]），其中Tomentella（35 OTUs），Inocybe（16），Sebacina（16）和Geopora（7）是最大的OTU丰富的血统。森林-草原带和过渡带内的EMF丰富度是有限的，而天然松树林在森林带内保持着多样化的EMF群落。着重指出了降水，土壤因素，寄主，DBH和海拔高度等复杂因素在干旱生态区的EMF群落丰富度和组成的变化。指标分析表明，某些EMF表现出明显的寄主偏好，而某些分类群（即Geopora和Inocybe属）则因其环境偏好而在干旱和碱盐条件下占主导地位。这项研究表明，在森林草原地区，EMF社区非常有限，而在黄土高原地区，森林区域包含了各种EMF社区。

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