Changes in soil fungal community composition and functional groups during the succession of Alpine grassland

Autor: Wen Zhao, Yali Yin, Shixiong Li, Yiling Dong, Shifeng Su
Rok vydání: 2022
Předmět:
Zdroj: Plant and Soil. 484:201-216
ISSN: 1573-5036
0032-079X
Popis: Aims This study explored the trends in soil fungal patterns and their responses to carbon and nitrogen during the succession in Alpine grassland in the Qilian Mountain area.Methods Illumina sequencing of ITS genes was used to characterize the soil fungal construct, and the FUNGuild database to predict functional groups in Alpine grassland succession from swamp meadow to alpine meadow, steppe meadow. Soil carbon and nitrogen, vegetation carbon and nitrogen, and soil enzyme activity were also investigated. Results The soil fungal OTUs increased with succession in the first stages but then reached a relatively stable state in the second successional stages. The sobs and Chao1 index showed the same trend as OTUS during succession. And there are significant differences in fungal community structure among different succession stages. During succession, most phyla showed linear decreases trends; whereas Ascomycota showed linear increases. The relative abundance of Pathotroph and Saprotroph of fungal functional increased with the successional stages, while the Symbiotroph had no change during succession. We also found that NH4+-N is the dominating factor, which affects the structure of fungal community across all successional stages, and soil microbial carbon has the greatest influence on the variation of functional communities.Conclusions Our findings indicate that the community dramatically shifted with succession in the first stages but then reached a relatively stable state in the second successional stages, while the soil fungal function group did not follow this rule. NH4+-N and soil microbial carbon had the greatest influence on the community and function of fungi, respectively.
Databáze: OpenAIRE
Externí odkaz: