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

文献类型： 外文期刊

作者： Wang, Zhonghua 1 ; Zhang, Huihong 1 ; Liu, Lu 1 ; Li, Shaojian 3 ; Xie, Jiufeng 4 ; Xue, Xia 5 ; Jiang, Ying 1 ;

作者机构： 1.Henan Agr Univ, Coll Resources & Environm, 63 Nongye Rd, Zhengzhou 450002, Peoples R China

2.Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100089, Peoples R China

3.Inst Plant Protect, Henan Acad Agr Sci, Zhengzhou 450002, Peoples R China

4.Henan Agr Univ, Coll Life Sci, Zhengzhou 450002, Peoples R China

5.Zhengzhou Univ, Affiliated Hosp 5, Marshall Med Res Ctr, Henan Key Lab Helicobacter Pylori & Microbiota & G, Zhengzhou 450002, Peoples R China

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

期刊名称：BMC MICROBIOLOGY （ 影响因子：4.465； 五年影响因子：4.818 ）

ISSN： 1471-2180

年卷期： 2022 年 22 卷 1 期

页码：

收录情况： SCI

摘要： Background: Phosphate-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. Results: In 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. Conclusion: PSB 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.

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