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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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초록· 키워드
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An auxin-producing bacterial strain, designated 4-3, was isolated from waste button mushroom compost in Boryeong-si, Chungnam. The strain 4-3 was classified as a novel strain of Leucobacter tardus, based on chemotaxonomic and phylogenetic analyses. TLC and HPLC the isolated L. tardus strain 4-3 produced indole-3-acetic acid (IAA), the auxin. Maximum IAA productionof $94.3mg\;L^{-1}$ was detected for bacteria cultured in R2A medium with 0.1% l-tryptophan, incubated for 24 h at $35^{\circ}C$. Negative correlationwas observed between IAA production and pH of the culture medium, indicating that the increase inIAA caused acidification ofthe medium. The effect of supplementation with varying concentrations of l-tryptophan, a known precursor of IAA, was also assessed. production was maximal at 0.1% l, but decreased at lconcentrations above 0.2%. To investigate the plant growth-promoting effects of the bacterium, L. tardus strain 4-3 culture broth was used to inoculate water cultures and seed pots of mung bean. We found thatadventitious root induction and root growth were 2.2-times higher in thethan in the non-inoculated plants.
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참고문헌 (22)
참고문헌 신청
Anroun H / 1998 / Potential of Rhizobium and Bradyrhizobium specidsas plant growth promoting rhizobacteria on non-legumes: effect on radishes (Raphanus sativus L.) / Plant Soil 204:57~67
Bakker AW / 1987 / Microbial cyanide production in the rhizosphere in relation to potato yield production and Pseudomonas spp.-mediated plant growth-stimulation / Soil Biol Biochem 19:451~457
Barazani O / 1999 / Is IAA the major root growth factor secreted from plant-growth-mediating bacteria / J Chem Ecol 25:2397~2406
Ben L / 2009 / Plant-growth-promoting rhizobacteria / Annu. Rev. Microbiol 63:541~556
Bertrand H / 2001 / Isolation and identification of the most efficient plant growthpromoting bacteria associated with canola (Brassica napus) / Biol Fertil Soils 33:152~156
Bakker AW / 1987 / Microbial cyanide production in the rhizosphere in relation to potato yield production and Pseudomonas spp.-mediated plant growth-stimulation / Soil Biol Biochem 19:451~457
Barazani O / 1999 / Is IAA the major root growth factor secreted from plant-growth-mediating bacteria / J Chem Ecol 25:2397~2406
Ben L / 2009 / Plant-growth-promoting rhizobacteria / Annu. Rev. Microbiol 63:541~556
Bertrand H / 2001 / Isolation and identification of the most efficient plant growthpromoting bacteria associated with canola (Brassica napus) / Biol Fertil Soils 33:152~156
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