title: Bacillus megaterium strain XTBG34 promotes plant growth by producing 2-pentylfuran.
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 DH5alpha. 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.
authors.affiliation: Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Science, Kunming, P. R. China.
authors.forename: Changsong
authors.initials: C
authors.lastname: Zou
authors.forename: Zhifang
authors.initials: Z
authors.lastname: Li
authors.forename: Diqiu
authors.initials: D
authors.lastname: Yu
mesh_terms: D017360:Arabidopsis / Q000254:growth & development* / Q000382:microbiology; D001410:Bacillus megaterium / Q000145:classification / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D005663:Furans / Q000378:metabolism*; D008969:Molecular Sequence Data; D010802:Phylogeny; D012988:Soil Microbiology
chemical_list: D005663:Furans; C530101:2-pentylfuran
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