| Diversity characteristics at different development stages of Caragana korshinskii Kom. Nebkhas in the desert steppe |
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| DOI：10.7606/j.issn.1000-7601.2022.03.26 |
| Key Words: Caragana korshinskii Kom. Nebkhas soil fungi high-throughput sequencing desert steppe diversity |
| Author Name | Affiliation | | WANG Ziyin | College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021,China
Key Laboratory of Ecological Protection of Agro-pastoral Ecotones in the Yellow River Basin, National Ethnic Affairs Commission of the People’s Republic of China, Yinchuan, Ningxia 750021, China
Key Laboratory for the Development and Application of Microbial Resources in Extreme Environments in Ningxia Province, Yinchuan, Ningxia 750021, China | | LIU Bingru | College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021,China
Key Laboratory of Ecological Protection of Agro-pastoral Ecotones in the Yellow River Basin, National Ethnic Affairs Commission of the People’s Republic of China, Yinchuan, Ningxia 750021, China
Key Laboratory for the Development and Application of Microbial Resources in Extreme Environments in Ningxia Province, Yinchuan, Ningxia 750021, China | | MOU Hongxia | College of Ecological Environment, Ningxia University/Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwestern China of Ministry of Education, Yinchuan, Ningxia 750021, China | | LI Zihao | College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021,China
Key Laboratory of Ecological Protection of Agro-pastoral Ecotones in the Yellow River Basin, National Ethnic Affairs Commission of the People’s Republic of China, Yinchuan, Ningxia 750021, China
Key Laboratory for the Development and Application of Microbial Resources in Extreme Environments in Ningxia Province, Yinchuan, Ningxia 750021, China |
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| Abstract: |
| To understand the formation mechanism of the microbial diversity in the underground environment during the evolution of the Caragana korshinskii Kom. Nebkhas in the desert steppe, the southern desert grassland in Yanchi County of Ningxia was used as the research object, and the community structure of the soil fungus in the Caragana korshinskii Kom. Nebkhas was analyzed by high-throughput sequencing technology and diversity characteristics. The results showed that the 2662 obtained operational taxonomic units (OTU) belonged to 13 phyla, 40 classes and 524 genera. Of which the dominant phyla were Ascomycota (77.48%~82.07%), Basidiomycota (7.42%~10.07%) and Mortierellomycota (5.42%~10.78%). The dominant bacteria classes included Sordariomycetes (27.10%~36.23%), Dothideomycetes (25.69%~35.30%), Eurotiomycetes (12.64%~16.33%) and Agaricomycetes (7.07%~7.57%). The soil organic carbon, available phosphorus, total nitrogen, and eletrical conductivity of the soil had significant differences in different parts of the Caragana korshinskii Kom. Nebkhas at different development stages, but there was no significant difference in total phosphorus and pH. There were no significant differences in Sobs and Chao 1 at different developmental stages of Caragana korshinskii Kom. Nebkhas, and significant differences in Ace index, but the richness index showed a maximum at maturity while the diversity index (Shannon and Simpson indices) was not significantly different. By analyzing the relationship between soil physical and chemical factors and soil fungal community, it was found that availabe phosphorus and organic carbon were the main influencing factors of soil fungal community structure. The network analysis graph showed that the symbiotic relationship of soil fungi was greater than the competitive relationship, and the saprophytic trophic fungi were the main functional groups of soil fungi in the development stage of the Caragana korshinskii Kom. Nebkhas. |
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