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

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Abstract

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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Authors and Affiliations

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

    Changsong Zou & Diqiu Yu

  2. Graduate School of Chinese Academy of Science, Beijing, 100039, P. R. China

    Changsong Zou

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

    Zhifang Li

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  1. Changsong Zou
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Correspondence to Diqiu Yu.

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Zou, C., Li, Z. & Yu, D. Bacillus megaterium strain XTBG34 promotes plant growth by producing 2-pentylfuran. J Microbiol. 48, 460–466 (2010). https://doi.org/10.1007/s12275-010-0068-z

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