Dark septate endophytes colonizing the roots of‘non-mycorrhizal’ plants in a mine tailing pond and in a relatively undisturbedenvironment, Southwest China
Dark septate endophytes colonizing the roots of‘non-mycorrhizal’ plants in a mine tailing pond and in a relatively undisturbedenvironment, Southwest China
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中国西南地区尾矿库和相对未受干扰的环境中，深色有隔内生菌定殖在“非菌根”植物的根部
DOI：
10.1080/17429145.2017.1333635
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发表时间：
2017
影响因子：
3.2
通讯作者：
Zhiwei Zhao
中科院分区：
文献类型：
--
作者：
Huan Liu;Tao Li;Yanhua Ding;Yao Yang;Zhiwei Zhao
暗隔内生菌（DSEs）是根中最常见的真菌定植者之一，被认为在功能上与菌根真菌重叠。然而，对“非菌根”植物中DSEs的分布和鉴定知之甚少。在本研究中，对8个典型的“非菌根”科的DSEs定殖和多样性进行了评估。共有31种植物的120份根样均被DSEs定殖。不同植物种间DSE定殖强度差异较大，范围为0.56 ~ 47.56%，平均为8.13%。Cladosporium、cyphellophoraand phialophora3个属为优势属，90个分离株的相对丰度均在60%以上。结果表明，不同的DSE物种在“非菌根”植物的根中定植，特别是在退化的尾矿中比在未受干扰的场地中更常见，但它们对功能根的整体作用需要进一步的实验证明。
Dark septate endophytes (DSEs), one of the most common fungal colonizers of roots, are considered to overlap in function with mycorrhizal fungi. However, there is little knowledge on the distribution and identity of DSEs in ‘non-mycorrhizal’ plants. In the current study, colonization and diversity of DSEs colonizing the roots of eight typically ‘non-mycorrhizal’ families were assessed. In total, 120 root samples of 31 plant species were all colonized by DSEs. Intensity of DSE colonization varied greatly among different plant species, with a range of 0.56–47.56%, 8.13% on average.Cladosporium,CyphellophoraandPhialophorawere the dominant genera, with a relative abundance of more than 60% over a total of 90 isolates. Our results showed that diverse DSE species colonized the roots of ‘non-mycorrhizal’ plants, especially they were more common in degraded mine tailings than in the undisturbed site, but their integral roles to the functional roots are in need of further experimental demonstration.