Screening of phosphate-solubilizing bacteria and their abilities of phosphorus solubilization and wheat growth promotion

BMC Microbiology

Research

Jiufeng Xie¹  Huihong Zhang²  Zhonghua Wang²  Ying Jiang²  Lu Liu³  Xia Xue⁴  Shaojian Li⁵ 

[1] College of Life Sciences, Henan Agricultural University, 450002, Zhengzhou, People’s Republic of China;College of Resources and Environment, Henan Agricultural University, No. 63 Nongye Road, 450002, Zhengzhou, People’s Republic of China;College of Resources and Environment, Henan Agricultural University, No. 63 Nongye Road, 450002, Zhengzhou, People’s Republic of China;College of Environmental Science and Engineering, Beijing Forestry University, 100089, Beijing, People’s Republic of China;Henan Key Laboratory of Helicobacter Pylori and Microbiota and Gastrointestinal Cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, 450002, Zhengzhou, People’s Republic of China;Institute of Plant Protection, Henan Academy of Agricultural Sciences, 450002, Zhengzhou, People’s Republic of China;

关键词: Phosphate fertilizer;    Indole-3-acetic acid;    Phosphate-solubilizing bacteria;    Soil phosphorus fractionation;    Wheat growth;   

DOI  :  10.1186/s12866-022-02715-7

 received in 2022-07-19, accepted in 2022-11-28,  发布年份 2022

来源: Springer

【 摘 要 】

BackgroundPhosphate-solubilizing bacteria (PSB) can enhance plant growth and phosphorus (P) solubilization, it also has been reported to reduce the negative effects of overused agricultural fertilizer in farmland and protect the soil environment. However, the mechanism behind this interaction has not been fully elucidated.ResultsIn this study, we screened out Pseudomonas moraviensis, Bacillus safensis, and Falsibacillus pallidus which can both solubilize P efficiently and produce indole-3-acetic acid (IAA) from sandy fluvo-aquic soils. The yield of wheat (Triticum aestivum) under PSB inoculation significantly increased up to 14.42% (P < 0.05) compared with the control treatment in phosphate fertilizer-used farmland. Besides promoting wheat growth, we found the labile P fraction in soil was significantly increased by over 122.04% (P < 0.05) under PSB inoculation compared with it in soils without, in parallel, the stable P fraction was significantly reduced by over 46.89% (P < 0.05). Furthermore, PSB inoculation increased the soil microbial biomass and activity, indicating that PSB screened out in this work performed a remarkable ability to colonize the soils in the wheat field.ConclusionPSB from sandy fluvo-aquic soil improve wheat growth and crop productivity by increasing the labile P fraction and IAA content in the greenhouse and wheat field. Our work provides an environment and economy-friendly bacterial resource that potentially promotes sustainable agricultural development in the long term.

【 授权许可】

CC BY   
© The Author(s) 2022

【 图 表 】

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