The Abundance of the nifH Gene Became Higher and the nifH-Containing Diazotrophic Bacterial Communities Changed During Primary Succession in the Hailuogou Glacier Chronosequence, China.

ABSTRACT: Primary successional ecosystems and the related soil development are often N limited. To date, N₂-fixing communities during primary succession in alpine ecosystems have remained underexplored. In this study, we applied quantitative PCR (qPCR) quantitation and targeted amplicon sequencing of nifH in the Hailuogou Glacier foreland to investigate the succession of N₂-fixing communities in five sites along a 62-year chronosequence. The abundance of the nifH gene increased along the primary succession in the chronosequence and correlated positively with pH, acetylene reduction activity, and water, organic C, total and available N, and available P contents. The increases in alpha diversity along the chronosequence may have been partly due to less competition f

SUBMITTER: Wang Y 

PROVIDER: S-EPMC8200853 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature