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Classification of Potassium-releasing Bacteria Isolated from Four Agricultural Soil Samples

文献类型： 外文期刊

作者： Liu, Xiaolu 1 ; Liu, Yongzhi 1 ; Yang, Liuqing 1 ; Guo, Tao 2 ; Lv, Le 1 ; Yin, Chunhua 1 ; Xu, Qianqian 1 ; Zhou, Feng 1 ;

作者机构： 1.Univ Sci & Technol Beijing, Sch Chem & Biol Enginepring, Beijing 100083, Peoples R China

2.Shandong Acad Agr Sceneces, Shandong Rice Res Inst, Jinan 250100, Peoples R China

关键词： Soil;Potassium;Isolation;Classification;Capability

期刊名称：JOURNAL OF PURE AND APPLIED MICROBIOLOGY （ 影响因子：0.073； ）

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收录情况： SCI

摘要： Bacteria capable of potassium-releasing are spread among phylogenetically diverse groups. The purpose of this work was to study the microbial diversity and potassium-releasing capacity of potassium-releasing strains isolated from four rhizosphere soil samples of tobacco from Luzhou, Sichuan Province, China. The density of potassium-releasing bacteria in the S soil sample was significantly higher than in others. Potassium-releasing bacteria isolated from four soils were grouped into 18 strains according to ARDRA. One colony was picked to culture and sequencing from each of the 18 strains to construct the phylogenetic tree, and the tree obtained from the sequences revealed four major branches exhibiting highest identity to the following genera: (i) Bacillus, (ii) Enterobacter, (iii) Pseudomonas and (iv) Providence. Majority of the strains with high potassium-releasing efficiency belong to Bacillus, and JK01 (Bacillus mojavensis) possesses the highest capability of potassium-releasing (95.01% higher than the control), it has greater potential to serve as plant growth promoting rhizobacteria.

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