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KMID : 1024520200290090925
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Journal of the Environmental Sciences
2020 Volume.29 No. 9 p.925 ~ p.933
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Isolation and Characterization of Siderophore-Producing Bacteria with Various Plant Growth-Promoting Abilities as a Potential
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Choi Seung-Hoon
Yoo Ji-Yeon
Park Sung-Jin
Park Min-Joo
Lee O-Mi
Son Hong-Joo
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Abstract
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To develop eco-friendly microbial inoculants, siderophore-producing bacteria were isolated and identified, and their production characteristics and plant growth-promoting abilities were investigated. A strain S21 was isolated from rhizosphere of Korean perilla (Perilla frutescens) and identified as Enterobacter amnigenus by phenotypic properties and 16S rRNA gene sequencing. The highest siderophore production was obtained in a medium containing 0.5% fructose, 0.1% urea, 0.5% K2HPO4 and 0.1% succinic acid. By using this improved medium, siderophore production increased by 2.5 times compared to that of basal medium. The strain S21 showed insoluble phosphate solubilizing, ammonification and antifungal activities, and also produced hydrolytic enzymes (protease and lipase), indoleacetic acid and 1-aminocyclopropane-1-carboxylate deaminase. Our data suggest that E. amnigenus S21 is a potential candidate that can be used as eco-friendly biocontrol agent and biofertilizer.
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KEYWORD
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Enterobacter amnigenus, Improved medium, PGPR, Siderophore
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