Molecular Characterization of Salt-Tolerant Bacteria Isolated from Greenhouse Vegetable Cultivation Soils

文献类型： 外文期刊

第一作者： Zhang, Jian

作者： Zhang, Jian;Wang, Penchen;Tian, Hongmei;Wang, Yan;Jiang, Haikun;Zhang, Jian;Wang, Penchen;Tian, Hongmei;Wang, Yan;Jiang, Haikun;Jiang, Haikun

作者机构：

关键词： 16S rDNA; Bacteria; Greenhouse condition; Saline soil; Salt ions

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2018 年 20 卷 8 期

页码：

收录情况： SCI

摘要： The aim of this study was to isolate salt-tolerant bacteria (STB) and identify their molecular properties from greenhouse vegetable cultivation soils in Shou county, China. The STB comprised 21-31% of the total viable cell count. A total of 12 strains were isolated from greenhouse saline soil and were classified as STB. All the isolates were Gram positive. Most of the isolates displayed plant growth-promoting trait, such as indole production. The majority of STB was positive for oxidase. Although the number of STB was only a third of the total viable cells, BOX-PCR and ERIC-PCR DNA fingerprinting showed different cluster groups, suggesting that the diversity of salt resistance bacterial isolates colonizing greenhouse soils differed. All the 12 sequenced isolates belonged to the cluster of Bacillus sp., which means that this genus is dominant in greenhouse soils. Only Bacillus sp. exhibited a strong ability to adapt in greenhouse saline soils. It was presumed that accumulation of salt ions and decreased pH value in the greenhouse soils could increase the osmotic pressure, which directly affected the number of bacteria with salt resistance. However, the obtained salt tolerant isolates should be further investigated for their application to sustainable agriculture. (C) 2018 Friends Science Publishers.

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