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KMID : 0380020160310010058
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Korean Journal of Biotechnology and Bioengineering
2016 Volume.31 No. 1 p.58 ~ p.65
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Isolation and Characterization of the Plant Growth Promoting Rhizobacterium, Arthrobacter scleromae SYE-3 on the Yam Growth
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Hong Sun-Hwa
Kim Ji-Seul
Sim Jun-Gyu
Lee Eun-Young
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Abstract
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In this study, Arthrobacter scleromae SYE-3, which was isolated from indigenous plant in a subtropical region, Neigeria, with plant growth promoting activity was evaluated to determine the optimal culture condition. A bacterial strain SYE-3 had the IAA productivity (89.15±0.36 mg/L) and ACC deaminase activity (0.20±0.06 at 72 hours). Also, optimal culture conditions such as temperature and pH of strain SYE-3 were 20oC and 10 in LB medium, respectively. Strain SYE-3 had up to 3% salt tolerance in the LB medium. Plant growth promoting ability of strain SYE-3 using yam (Dioscorea japonica Thunb.) was evaluated. As a result, strain SYE-3 had showed very powerful effect on the increase of the shoot length and root biomass of yam (190.0% and 282.41% increase for 112 days, respectively). These results indicated that Arthrobacter scleromae SYE-3 can serve as a promising microbial resource for the biofertilizers of subtropical crops.
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KEYWORD
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ACC, IAA, Plant growth promoting rhizobacteria, Subtropical crops, Yam
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