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Metagenomic insights into seasonal variations in the soil microbial community and function in a Larix gmelinii forest of Mohe,China

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Journal of Forestry Research 2021年第1期32卷 371-383页

作者： Tong Bao Shilin Deng Kaiyue Yu Weiyi Li Airong Dong Department of Forest Protection College of ForestryNortheast Forestry UniversityHarbin 150040People’s Republic of China

The eff ect of seasons on the soil microbiome in a Larix gmelinii forest of Mohe,China,where winter temperatures are generally below−40°C,was evaluated with metagenomics *** profi ling using sequencing information revealed that Proteobacteria,Actinobacteria,Acidobacteria and Verrucomicrobia were the dominant phyla in spring,summer,and fall,as were Bradyrhizobium,Chthoniobacter,Streptomyces,Acid Candidatus Koribacter at the genus *** species that were abundant in spring and fall greatly diminished in abundance in *** of orthologous groups(COG)of proteins,carbohydrate-active enzymes(CAZy),Kyoto Encyclopedia of Genes and Genomes(KEGG)and NCBI databases were used to elucidate the function of diverse proteins and metabolites of the microbial community of *** *** analysis showed that fewer genes were detected in spring than in fall and summer,indicating that many soil microbes in the *** forest were not tolerant to *** on KEGG analysis,some pathways in the soil microbes were activated in spring and autumn and deactivated in *** analysis revealed that most CAZy were more active in summer than in spring or autumn and were severely inhibited in the *** functional pathways,proteins,and CAZy involved in the community changes were concerned with cold or heat ***,the soil in the *** forest can be a valuable resource for further research on heat and cold tolerance of soil microbes.

关键词： Soil microbial community microbial function Metagenomic Seasonal variation

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