Responses of Soil Fungal Communities to Subalpine Meadow Degradation in Mount Wutai

被引：3
|
作者：
Luo Z.-M. [1 ,2 ]
He L. [3 ]
Liu J.-X. [2 ]
Hu Y.-Q. [1 ,2 ]
Zhuo Y.-Y. [4 ]
Zheng Q.-R. [1 ]
Chai B.-F. [2 ]
机构：
[1] Institute of Mount Wutai Cultural and Ecological Research, Department of Geography, Xinzhou Teachers University, Xinzhou
[2] Shanxi Key Laboratory of Ecological Restoration for Loess Plateau, Institute of Loess Plateau, Shanxi University, Taiyuan
[3] Shanxi Forestry and Grassland General Engineering Station, Taiyuan
[4] Department of Biology, Xinzhou Teachers University, Xinzhou
来源：
Huanjing Kexue/Environmental Science | 2022年 / 43卷 / 06期
关键词：
Fungal community; High-throughput sequencing; Microbial diversity; Mount Wutai; Subalpine meadow degradation;
D O I：
10.13227/j.hjkx.202109174
中图分类号：
学科分类号：
摘要：
Grassland degradation has become a worldwide ecological problem. Although soil microorganisms, as the main participants in the process of grassland degradation, play a key role in maintaining ecosystem function and improving soil productivity, little is known about the changes in microbial communities caused by grassland degradation and their relationship with soil properties and plant communities. In this study, we used Illumina MiSeq sequencing to analyze the soil fungal communities of subalpine meadow soil at four different degradation stages [i.e., non-degraded (ND), lightly degraded (LD), moderately degraded (MD), and heavily degraded (HD)] on Mount Wutai. The results showed that Ascomycota, Basidiomycota, and Zygomycota were the dominant phyla of soil fungi in the subalpine meadow, regardless of degradation stage. LEfSe showed that the subalpine meadows with different degradation degrees were enriched with different biomarkers. Compared with ND, MD and HD were enriched with more pathogenic fungi. Moreover, HD apparently decreased the richness and Shannon indexes of soil fungal communities compared with those of ND. Non-metric multidimensional scaling (NMDS) and similarity analysis (ANOSIM) indicated that the compositions and structures of fungal communities were significantly different among meadows with different degradation degrees (P<0.05). Redundancy analysis (RDA) showed that soil water content, total nitrogen, plant richness, and ammonium nitrogen were significantly correlated with the compositions and structures of fungal communities (P<0.05). There were significant correlations between α diversity and β diversity between plant and fungal communities (P<0.05), indicating strong coupling. The results of our study provide a theoretical basis for further research on the changes in soil fungal communities and their driving mechanism in different degradation stages of subalpine meadows. © 2022, Science Press. All right reserved.
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页码：3328 / 3337
页数：9
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