Soil bacterial diversity changes in different broomcorn millet intercropping systems
In this study, characterization of different bacterial communities of monoculture and intercropping systems was achieved by deep sequencing. A total of 4684 operational taxonomic units were classified to the species level with good sampling depth and sequencing coverage. The abundance of Actinobacteria, Bacteroidetes, Proteobacteria, Acidobacteria, and Gemmatimonadetes varied at different growth stages and was related to growth of the intercropped plant. According to diversity analyses, Glycomyces, Aeromicrobium, Adhaeribacter, and Streptomyces were the dominant genera. In addition, we predicted functional gene composition based on bacterial OTUs present. Functional results showed that membrane transport and nutrient metabolism was highly abundant in all samples, although abundance varied at different growth stages, which indicated these pathways might be affected by the dominant categories of bacterial community. The dynamic changes observed during intercropping of broomcorn millet with different leguminous plants suggest that soil bacterial community structure exhibits a crop speciesāspecific pattern. Further, agronomic trait data from different broomcorn millet intercropping systems were consistent with functional results and suggest that agronomic traits may be influenced by soil bacterial communities.
Source: Journal of Basic Microbiology - Category: Microbiology Authors: Xiaoning Cao, Sichen Liu, Junjie Wang, Haigang Wang, Ling Chen, Xiang Tian, Lijun Zhang, Jianwu Chang, Lun Wang, Zhixin Mu, Zhijun Qiao Tags: RESEARCH PAPER Source Type: research