Contrasting soil fungal communities at different habitats in a revegetated copper mine wasteland  

作　　者：Jie-liang Liang Jun Liu Tao-tao Yang Pan-deng Wang Sheng-chang Zhang Pu Jia Bin Liao Wen-sheng Shu Jin-tian Li 

机构地区：[1]Institute of Ecological Science and Guangdong Provincial Key Laboratory of Biotechnology for Plant Development,School of Life Sciences,South China Normal University,Guangzhou 510631,China [2]School of Life Sciences,Sun Yat-sen University,Guangzhou 510275,China

出　　处：《Soil Ecology Letters》2020年第1期8-19,共12页土壤生态学快报（英文）

基　　金：supported financially by the Key-Area Research and Development Program of Guangdong Province(No.2019B110207001);the National Natural Science Foundation of China(Nos.41622106,41471257,31600082 and 41603074);the China Postdoctoral Science Foundation(Nos.2018M640798 and 2019M652939).

摘　　要：Little is known about the responses of soil fungal communities to revegetation of mine wastelands,representing a major gap in the knowledge needed to improve the performances of revegetation schemes for mine wastelands.To shed some light on this matter,we reestablished 4000 m^(2) of vegetation on an extremely acidic(pH 2.5)copper mine tailings pond and collected soil samples from three different types of habitats:amended layer of the reclaimed tailings(ALRT),unamended layer of the reclaimed tailings(ULRT),and unreclaimed tailings(UT).Soil fungal communities in the 120 samples collected in two consecutive years were characterized via high-throughput sequencing.The fungal diversities at ALRTand ULRT were found to be significantly higher than those at UT.Ascomycota whose relative abundance ranged from 74.5% to 98.4% was the most predominant phylum across all habitats,exhibiting the lowest predominance at ALRT.Two acidophilic fungal genera,Acidomyces and Acidiella,dominated UT with relative abundances being as high as 37.8% and 15.2%,respectively.In contrast,three genera with plant growth-promoting species(Talaromyces,Trichoderma and Penicillium)were abundant at ULRT and ALRT.Remarkably,their relative abundances at ULRTcould be up to 29.0%,26.9% and 9.7%,respectively.The three types of habitats differed considerably in the overall soil fungal community composition at species level,which became more pronounced as time progressed.The abovementioned differences between habitats in soil fungal community features were related to the reduced availability of soil copper and zinc.These results improved our understanding of fungal ecology of mine wastelands.

关 键 词：Extremely acidic Fungal community structure Mine soil Next generation sequencing PHYTOSTABILIZATION RESTORATION 

分 类 号：S15[农业科学—土壤学]