Organic mulching positively regulates the soil microbial communities and ecosystem functions in tea plantation

BMC Microbiology

article

Zhang, Shuning¹  Wang, Yu¹  Sun, Litao¹  Qiu, Chen¹  Ding, Yiqian¹  Gu, Honglian¹  Wang, Linjun²  Wang, Zhaoshun²  Ding, Zhaotang¹ 

[1] Tea Research Institute, Qingdao Agricultural University;Weihai agricultural and rural affairs service center

关键词: Camellia sinensis (L.) O;    Kuntze;    Mulch;    Bacterial and fungal communities;    Tea plantation soil;   

DOI  :  10.1186/s12866-020-01794-8

学科分类：放射科、核医学、医学影像

来源: BioMed Central

【 摘 要 】

Different mulches have variable effects on soil physicochemical characteristics, bacterial and fungal communities and ecosystem functions. However, the information about soil microbial diversity, community structure and ecosystem function in tea plantation under different mulching patterns was limited. In this study, we investigated bacterial and fungal communities of tea plantation soils under polyethylene film and peanut hull mulching using high-throughput 16S rRNA and ITS rDNA gene Illumina sequencing. The results showed that the dominant bacterial phyla were Proteobacteria, Actinobacteria, Acidobacteria and Chloroflexi, and the dominant fungal phyla were Ascomycota, Mortierellomycota and Basidiomycota in all samples, but different mulching patterns affected the distribution of microbial communities. At the phylum level, the relative abundance of Nitrospirae in peanut hull mulching soils (3.24%) was significantly higher than that in polyethylene film mulching soils (1.21%) in bacterial communities, and the relative abundances of Mortierellomycota and Basidiomycota in peanut hull mulching soils (33.72, 21.93%) was significantly higher than that in polyethylene film mulching soils (14.88, 6.53%) in fungal communities. Peanut hull mulching increased the diversity of fungal communities in 0–20 cm soils and the diversity of bacterial communities in 20–40 cm soils. At the microbial functional level, there was an enrichment of bacterial functional features, including amino acid transport and metabolism and energy production and conversion, and there was an enrichment of fungal functional features, including undefined saprotrophs, plant pathogens and soils aprotrophs. Unique distributions of bacterial and fungal communities were observed in soils under organic mulching. Thus, we believe that the organic mulching has a positive regulatory effect on the soil bacterial and fungal communities and ecosystem functions, and so, is more suitable for tea plantation.

【 授权许可】

CC BY|CC0