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Partial replacement of inorganic phosphorus (P) by organic manure reshapes phosphate mobilizing bacterial community and promotes P bioavailability in a paddy soil
Bi, Qing-Fang; Li, Ke-Jie; Zheng, Bang-Xiao; Liu, Xi-Peng; Li, Hong-Zhe; Jin, Bing-Jie; Ding, Kai; Yang, Xiao-Ru; Lin, Xian-Yong; Zhu, Yong-Guan
2020-02-10
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume703Pages:1-7
AbstractThe optimization of more sustainable fertilization practice to relieve phosphorus (P) resource scarcity and increase P fertilizer utilization, a better understanding of the regulatory roles of microbes in P mobilization is urgently required to reduce P input. The genes phoD and pqqC are responsible for regulating organic and inorganic P mobilization, respectively. Using high-throughput sequencing, the corresponding bacterial communities harbored by these genes were determined. We conducted a 4-year rice-rice-crop rotation to investigate the responses of phoD- and pqqC-harboring bacterial communities to the partial replacement of inorganic P fertilizer by organic manure with reduced P input. The results showed that a combination of organic and inorganic fertilization maintained high rice yield, and also produced a more complex and stable phosphate mobilizing bacterial community, which contributed to phosphatase activities more than their gene abundances in the model analysis. Compared with the conventional mineral fertilization, organic-inorganic fertilization with the reduced P input slightly increased pqqC gene abundance while significantly enhanced the abundance of phoD-harboring bacteria, especially the genera Bradyrhizobium and Methylobacterium known as potential organic P mineralizers which can maintain high rice production. Moreover, the increased pH was the most impactful factor for the phoD- and pqqC-harboring bacterial communities, by promoting microbial P turnover and greatly increasing bioavailable P pools (H2O-Pi and NaHCO3-Pi, NaOH-Pi) in this P-deficient paddy soil. Hence, our study demonstrated that the partial replacement of mineral P with organic manure could reshape the inorganic phosphate solubilizing and alkaline-phosphomonoesterase encoding bacterial communities towards more resilient and effective to the high P utilization and productivity over intense cultivation, providing insights into the potential of soil microbes in the efficient management of agricultural P fertilization. (C) 2019 Elsevier B.V. All rights reserved.
Department城市与区域生态国家重点实验室
KeywordOrganic-inorganic fertilization Reduced phosphorus input Phosphate mobilizing bacteria Paddy soil Network interactions
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/44402
Collection城市与区域生态国家重点实验室
Recommended Citation
GB/T 7714
Bi, Qing-Fang,Li, Ke-Jie,Zheng, Bang-Xiao,et al. Partial replacement of inorganic phosphorus (P) by organic manure reshapes phosphate mobilizing bacterial community and promotes P bioavailability in a paddy soil[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,703:1-7.
APA Bi, Qing-Fang.,Li, Ke-Jie.,Zheng, Bang-Xiao.,Liu, Xi-Peng.,Li, Hong-Zhe.,...&Zhu, Yong-Guan.(2020).Partial replacement of inorganic phosphorus (P) by organic manure reshapes phosphate mobilizing bacterial community and promotes P bioavailability in a paddy soil.SCIENCE OF THE TOTAL ENVIRONMENT,703,1-7.
MLA Bi, Qing-Fang,et al."Partial replacement of inorganic phosphorus (P) by organic manure reshapes phosphate mobilizing bacterial community and promotes P bioavailability in a paddy soil".SCIENCE OF THE TOTAL ENVIRONMENT 703(2020):1-7.
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