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Isolation and Characterization of Phosphate-Solubilizing Bacteria from Mushroom Residues and their Effect on Tomato Plant Growth Promotion

文献类型： 外文期刊

作者： Zhang, Jian 1 ; Wang, Pengcheng 1 ; Fang, Ling 1 ; Zhang, Qi-An 1 ; Yan, Congsheng 1 ; Chen, Jingyi 1 ;

作者机构： 1.Anhui Acad Agr Sci, Inst Horticulture, Hefei, Anhui, Peoples R China

2.Key Lab Genet Improvement & Ecophysiol Hort Crop, Hefei, Anhui, Peoples R China

3.Anhui Agr Univ, Sch Hort, Hefei, Anhui, Peoples R China

关键词： 16S rRNA;mushroom residues;phosphate solubilizing bacteria;tomato plant growth

期刊名称：POLISH JOURNAL OF MICROBIOLOGY （ 影响因子：1.28； 五年影响因子：1.352 ）

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收录情况： SCI

摘要： Phosphorus is a major essential macronutrient for plant growth, and most of the phosphorus in soil remains in insoluble form. Highly efficient phosphate-solubilizing bacteria can be used to increase phosphorus in the plant rhizosphere. In this study, 13 isolates were obtained from waste mushroom residues, which Were composed of cotton seed hulls, corn cob, biogas residues, and wood flour. NBRIP solid medium was used for isolation according to the dissolved phosphorus halo. Eight isolates produced indole acetic acid (61.5%), and six isolates produced siderophores (46.2%). Three highest phosphate-dissolving bacterial isolates, namely, M01, M04, and M11, were evaluated for their beneficial effects on the early growth of tomato plants (Solanum lycopersicum L. Wanza 15). Strains M01, M04, and M11 significantly increased the shoot dry weight by 30.5%, 32.6%, and 26.2%, and root dry weight by 27.1%, 33.1%, and 25.6%, respectively. Based on 16S rRNA gene sequence comparisons and phylogenetic positions, strains M01 and M04 belonged to the genus Acinetobacter, and strain M11 belonged to the genus Ochrobactrum. The findings suggest that waste mushroom residues are a potential resource of plant growth-promoting bacteria exhibiting satisfactory phosphate-solubilizing for sustainable agriculture.

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