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首页> 美国卫生研究院文献>Ecology and Evolution >Edaphic and host plant factors are linked to the composition of arbuscular mycorrhizal fungal communities in the root zone of endangered Ulmus chenmoui Cheng in China
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Edaphic and host plant factors are linked to the composition of arbuscular mycorrhizal fungal communities in the root zone of endangered Ulmus chenmoui Cheng in China

机译：根腐病和寄主植物因子与中国濒危榆树根系中丛枝菌根真菌群落的组成有关

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摘要

Despite the importance of arbuscular mycorrhizal fungi (AMF) within deciduous forest ecosystems, we know little about how natural AMF communities are structured in the root zone of the endangered elm species Ulmus chenmoui. In this study, three U. chenmoui sampling sites, differing with respect to plant health, age, and growth status, were selected in Anhui Province, China. AMF biodiversity in the root zones of individual U. chenmoui trees was investigated using high‐throughput sequencing. In total, 61 AMF operational taxonomic units were detected. Five genera, namely Glomus (62.82%), Paraglomus (17.82%), Rhizophagus (4.29%), Septoglomus (4.06%) and Funneliformis (2.35%), and 29 species of AMF were identified. Correlation analysis indicated that available soil phosphorus and potassium concentrations were the main edaphic factors influencing AMF community structure. There was a difference in AMF species richness among the three U. chenmoui stands. Our study showed that soil nutrient concentrations and plant health, age, and growth status can exert a selective effect on the composition of the AMF population in the soil in the root zones of U. chenmoui trees.
机译：尽管在落叶森林生态系统中丛枝菌根真菌（AMF）的重要性，但我们对濒危榆树榆木（Ulmus chenmoui）根系中天然AMF群落的结构了解甚少。在这项研究中，在中国安徽省选择了三个因植物健康，年龄和生长状况而异的美国陈穆伊采样点。使用高通量测序研究了单株U.chenmoui树根区域的AMF生物多样性。总共检测到61个AMF操作分类单位。确定了5个属，即Glomus（62.82％），Paraglomus（17.82％），Rhizophagus（4.29％），Septoglomus（4.06％）和Funneliformis（2.35％），以及29种AMF。相关分析表明，土壤有效磷和钾含量是影响AMF群落结构的主要影响因素。美国三个陈茂伊林分中，AMF物种丰富度存在差异。我们的研究表明，土壤养分浓度，植物健康状况，年龄和生长状况可以对chenmoui树木根系土壤中AMF种群的组成产生选择性影响。

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