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题名: The molecular diversity of arbuscular mycorrhizal fungi in the arsenic mining impacted sites in Hunan Province of China
作者: Sun, Yuqing; Zhang, Xin; Wu, Zhaoxiang; Hu, Yajun; Wu, Songlin; Chen, Baodong
刊名: JOURNAL OF ENVIRONMENTAL SCIENCES
出版日期: 2016-01
卷号: 39, 页码:110-118
关键词: Arsenic pollution ; Arbuscular mycorrhizal fungi ; Biodiversity ; 454 pyrosequencing ; Heavy metal
DOI: 10.1016/j.jes.2015.10.005
部门归属: 城市与区域生态国家重点实验室
英文摘要: Arbuscular mycorrhizal fungi (AMF) can establish amutualistic associationwithmost terrestrial plants even in heavy metal contaminated environments. It has been documented that high concentrations of toxic metals, such as arsenic (As) in soil could adversely affect the diversity and function of AMF. However, there are still gaps in understanding the community composition of AMF under long-term As contaminations. In the present study, six sampling sites with different As concentrations were selected in the Realgar mining area in Hunan Province of China. The AMF biodiversity in the rhizosphere soils of the dominant plant species was investigated by sequencing the nuclear small subunit ribosomal RNA (SSU rRNA) gene fragments using 454-pyrosequencing technique. A total of 11 AMF genera were identified, namely Rhizophagus, Glomus, Funneliformis, Acaulospora, Diversispora, Claroideoglomus, Scutellopora, Gigaspora, Ambispora, Praglomus, and Archaeospora, among which Glomus, Rhizophagus, and Claroideoglomus clarodeum were detected in all sampling sites, and Glomuswas the dominant AMF genus in the Realgar mining area. Redundancy analysis indicated that soil pH, total As and Cd concentrations were the main factors influencing AMF community structure. There was a negative correlation between theAMF species richness and the totalAs concentration in the soil, but no significant correlation between the Shannon-Wiener index of the AMF and plants. Our study showed that high As concentrations can exert a selective effect on the AMF populations. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35684
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

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