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Bacillus megaterium strain XTBG34 promotes plant growth by producing 2-pentylfuran

文献类型： 外文期刊

作者： Zou, Changsong 1 ; Li, Zhifang 1 ; Yu, Diqiu 1 ;

作者机构： 1.Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Science, Kunming 650223, P. R. China;Graduate School of Chinese Academy of Science, Beijing 100039, P. R. China

2.Cotton Research Institute, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, P. R. China

3.Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Science, Kunming 650223, P. R. China

关键词： 2-pentylfuran;A. thaliana;B. megaterium;gas chromatography-mass spectrometry (GC/MS);plant growth-promoting rhizobacteria (PGPR);solid phase microextraction (SPME)

期刊名称：JOURNAL OF MICROBIOLOGY （ 影响因子：3.422； 五年影响因子：3.28 ）

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收录情况： SCI

摘要： Several chemical changes in soil are associated with plant growth-promoting rhizobacteria. An endosporeforming bacterium, strain XTBG34, was isolated from a Xishuangbanna Tropical Botanical Garden soil sample and identified as Bacillus megaterium. The strain's volatiles had remarkable plant growth promotion activity in Arabidopsis thaliana plants; after 15 days treatment, the fresh weight of plants inoculated with XTBG34 was almost 2-fold compared with those inoculated with DH5α. Head space volatile compounds produced by XTBG34, trapped with headspace solid phase microextraction and identified by gas chromatography-mass spectrometry, included aldehydes, alkanes, ketones and aroma components. Of the 11 compounds assayed for plant growth promotion activity in divided Petri plates, only 2-pentylfuran increased plant growth. We have therefore identified a new plant growth promotion volatile of B. megaterium XTBG34, which deserves further study in the mechanisms of interaction between plant growth-promoting rhizobacteria and plants.

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