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Effects of inorganic and organic treatments on the microbial community of maize rhizosphere by a shotgun metagenomics approach
Annals of Microbiology ( IF 3 ) Pub Date : 2020-07-31 , DOI: 10.1186/s13213-020-01591-8
Matthew Chekwube Enebe , Olubukola Oluranti Babalola

The main drivers of biogeochemical cycling of nutrients, plant growth promotion, and disease suppression are microbes. Organic manure increases soil quality and plant productivity; the same is true of inorganic fertilizer. In this study, we explored shotgun metagenomics study to investigate how maize (Zea mays everta) rhizosphere microbial community diversity is shaped following the application of both compost manure and inorganic fertilizer. We used high throughput next-generation sequencing—metagenomics studies to examine the rhizosphere microbial community of maize plants grown in an organic compost manure (8 tons/ha and 4 tons/ha) and inorganic (120 kg/ha NPK and 60 kg/ha NPK chemical) fertilized soils. An unfertilized soil was used as a control. The taxonomic analysis of the soil revealed that regardless of the fertilization regimes, Proteobacteria and Bacteroidetes are distributed across all the samples, but in varying populations. Higher quantities of organic manure (8 tons/ha) and lower (60 kg/ha) nitrogen fertilizer, as well as the untreated control, supports the selection and enrichment of Proteobacteria and Actinobacteria, while lower quantities of organic compost (4 tons/ha) manure boost the population of Bacteroidetes. Firmicutes, on the other hand, were most abundant in low organic manure (4 tons/ha) and higher inorganic (120 kg/ha) fertilized soil. Fungi were selected and enriched by higher (8 tons/ha) and lower (4 tons/ha) compost manure, while archaea were mostly supported by higher doses of inorganic fertilizers (120 kg/ha) and high compost manure (8 tons/ha) treatments. Therefore, comprehending the effects of compost and chemical fertilizers (NPK—20% nitrogen, 7% phosphorus, 3% potassium) on the community structure, dynamics, and abundance of rhizosphere microbiome will help in the manipulation of soil microbial community to increase microbial diversity in the agroecosystem.

中文翻译:

shot弹枪宏基因组学方法对无机和有机处理对玉米根际微生物群落的影响

养分的生物地球化学循环,植物生长促进和疾病抑制的主要驱动力是微生物。有机肥料可提高土壤质量和植物生产力;无机肥料也是如此。在这项研究中,我们探索了散弹枪的宏基因组学研究,以研究在堆肥和无机肥料的共同作用下玉米(Zea mays everta)根际微生物群落多样性的形成。我们使用了高通量的下一代测序技术-元数据组学研究,研究了有机堆肥(8吨/公顷和4吨/公顷)和无机(120千克/公顷NPK和60千克/公顷)中种植的玉米植物的根际微生物群落NPK化学)施肥的土壤。未施肥的土壤用作对照。对土壤的分类学分析表明,无论施肥方式如何,变形杆菌和拟杆菌分布在所有样品中,但种群不同。较高数量的有机肥料(8吨/公顷)和较低数量的氮肥(60公斤/公顷)以及未经处理的对照,有助于选择和富集变形杆菌和放线菌,而较低的有机堆肥(4吨/公顷) )粪便增加了拟杆菌的数量。另一方面,在低有机肥(4吨/公顷)和高无机肥(120公斤/公顷)施肥的土壤中,硬毛菌最多。选择真菌并通过较高(8吨/公顷)和较低(4吨/公顷)的堆肥进行富集,而古细菌主要由较高剂量的无机肥料(120公斤/公顷)和较高的堆肥(8吨/公顷)支持。 )治疗。因此,了解堆肥和化肥(NPK-20%氮,
更新日期:2020-07-31
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