数字农科院2.0

Multiphasic characterization of a plant growth promoting bacterial strain, Burkholderia sp 7016 and its effect on tomato growth in the field

文献类型： 外文期刊

作者： Gao Miao;Zhou Jian-jiao;Chen Qian;Xu Jing;Sun Jian-guang;Wang En-tao

作者机构：

关键词： PGPR;Burkholderia sp.;multiphasic characterization;promoting growth;biofertilizer

期刊名称： JOURNAL OF INTEGRATIVE AGRICULTURE

ISSN： 2095-3119

年卷期： 2015 年 14 卷 9 期

页码：

收录情况： SCI

摘要： Aiming at searching for plant growth promoting rhizobaoteria (PGPR), a bacterium strain coded as 7016 was isolated from soybean rhizosphere and was characterized in the present study. It was identified as Burkholderia sp. based on 16S rDNA sequence analysis, as well as phenotypic and biochemical characterizations. This bacterium presented nitrogenase activity, 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activity and phosphate solubilizing ability; inhibited the growth of Sclerotinia sclerotiorum, Gibberella zeae and Verticillium dahliae; and produced small quantities of indole acetic acid (IAA). In green house experiments, significant increases in shoot height and weight, root length and weight, and stem diameter were observed on tomato plants in 30 d after inoculation with strain 7016. Result of 16S rDNA PCR-DGGE showed that 7016 survived in the rhizosphere of tomato seedlings. In the field experiments, Burkholderia sp. 7016 enhanced the tomato yield and significantly promoted activities of soil urease, phosphatase, sucrase, and catalase. All these results demonstrated Burkholderia sp. 7016 as a valuable PGPR and a candidate of biofertilizer.

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