Chili residue and Bacillus laterosporus synergy impacts soil bacterial microbiome and agronomic performance of leaf mustard (Brassica juncea L.) in a solar greenhouse

文献类型： 外文期刊

第一作者： Olasupo, Ibraheem Olamide

作者： Olasupo, Ibraheem Olamide;Wang, Jun;Wei, Xiaoxuan;Sun, Mintao;Li, Yansu;Yu, Xianchang;Yan, Yan;He, Chaoxing;Olasupo, Ibraheem Olamide;Olasupo, Ibraheem Olamide

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关键词： Greenhouse vegetable production; Residue recycling; Commercial PGPR; Microbial biomass; 16S rRNA bacterial community

期刊名称：PLANT AND SOIL （ 影响因子：4.993； 五年影响因子：5.44 ）

ISSN： 0032-079X

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收录情况： SCI

摘要： Aims There is a growing interest in the use of microbials in sustainable protected cultivation systems. A novel study on the influence of chili residue and plant growth-promoting rhizobacteria (PGPR) interaction was conducted to investigate the agronomic response of a greenhouse-grown leaf mustard (Brassica juncea L.), as well as the soil productivity. Methods Bacillus subtilis (B1), B. laterosporus (B2), or B. amyloliquefaciens (B3) was inoculated on soil containing chili residue in a solar greenhouse. Other treatments were chili residue alone (NoPGPR) and chemical fertilizer (ChemFert). The crop photosynthesis, growth, yield, and quality, the soil chemical properties, microbial biomass, and the rhizospheric bacterial community were evaluated. Results Residue and PGPR synergy significantly enhanced the leaf mustard's productivity and soil quality than NoPGPR and ChemFert. B1, B2, and B3 improved the crop yield by 51-63% than NoPGPR and ChemFert. They also increased the net photosynthetic rate, plant uptakes of N, P, K, Mg, Ca, Mn, Zn, and soil microbial quotient than NoPGPR and ChemFert, which comparatively elicited lower leaf chlorophyll-a, total soluble solids, nutrients uptakes compared to the PGPR treatments. Residue and B. laterosporus synergy markedly improved the soil organic carbon, total nitrogen, microbial carbon contents, and the microbial quotient. Further, 16S rRNA high throughput sequencing revealed that inoculating chili residue with B. laterosporus more consistently enriched the rhizospheric bacterial community composition at the phylum and genus levels, although with a lower diversity. Conclusions Inoculating chili residue with B. laterosporus is a strategy with immense benefits as a bio-fertilizer for sustainable vegetable production, which also renders soil ecological services.

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