Community composition and diversity of culturable fungi from the soil suspended in tree holes of Robinia pseudoacacia
The community of culturable fungi from the soil suspended in tree holes of Robinia pseudoacacia and subsurface soil in Huaxi District,Guiyang city,Guizhou Province,was studied by combining phenotypic characteristics and molecular identification.In total,315 fungal isolates were obtained from the soil suspended in the tree holes,belonging to 19 species in seven genera.Penicillium commune was dominant,and its relative abundance was 81.11％ of the total isolates.Totally 156 isolates belonging to 18 species in six genera were obtained in subsurface soil.It was indicated that the fungal quantity in the soil suspended of tree holes was obviously more than that in subsurface soil.Although Penicillium commune was also dominant in the subsurface soil,its relative abundance was only 24.93％ of the total isolates.Indexes of fungal diversity in the soil suspended,including Shanon-Wiener index (H=0.8291),Simpson index (D=0.3373),Pielou index (J=0.2815) and Margalef index (R=1.3300),were lower than those in subsurface soil.Some unique fungi,such as Cunninghamella elegans,Chaetopyrena penicillata,and Humicola nivea,were isolated from the soil suspended in tree holes,but not from the subsurface soil.By means of statistical analysis,the similarity coefficient between the soil suspended in tree holes and subsurface soil was low (Cj=0.2300).
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NSTL
万方数据
维普
