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Soil bacterial diversity changes in different broomcorn millet intercropping systems

文献类型: 外文期刊

作者: Cao, Xiaoning 1 ; Liu, Sichen 1 ; Wang, Junjie 1 ; Wang, Haigang 1 ; Chen, Ling 1 ; Tian, Xiang 2 ; Zhang, Lijun; Chan 1 ;

作者机构: 1.Shanxi Acad Agr Sci, Inst Crop Germplasm Resources,Minist Agr, Shanxi Key Lab Genet Resources,Germplasm Enhancem, Genet Improvement Minor Crops,Key Lab Crop Gene R, Taiyuan, Shanxi, Peoples R China

2.Shanxi Acad Agr Sci, Inst Cro

关键词: bacterial community;broomcorn millet;intercropping;legume;monoculture

期刊名称:JOURNAL OF BASIC MICROBIOLOGY ( 影响因子:2.281; 五年影响因子:2.516 )

ISSN: 0233-111X

年卷期: 2017 年 57 卷 12 期

页码:

收录情况: SCI

摘要: Plants growing in soil and the diverse microorganisms with which they are in direct contact have adapted to exploit their close association for mutual benefit. Various intercropping systems have been used to control plant disease and improve productivity in fields. Although high-throughput sequencing approaches have provided new insights into the soil bacterial community, current knowledge of intercropping of broomcorn millet with different leguminous plants is limited. 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 species-specific 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.

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