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잠재적 미생물 농약으로서 다양한 식물성장 촉진 활성을 가진 siderophore 생산 세균의 분리와 특성

Isolation and Characterization of Siderophore-Producing Bacteria with Various Plant Growth-Promoting Abilities as a Potential

한국환경과학회지 2020년 29권 9호 p.925 ~ 933
최승훈, 유지연, 박성진, 박민주, 이오미, 손홍주,
소속 상세정보
최승훈 ( Choi Seung-Hoon ) - Pusan National University Department of Life Science and Environmental Biochemistry
유지연 ( Yoo Ji-Yeon ) - Pusan National University Department of Life Science and Environmental Biochemistry
박성진 ( Park Sung-Jin ) - Pusan National University Department of Life Science and Environmental Biochemistry
박민주 ( Park Min-Joo ) - Pusan National University Department of Life Science and Environmental Biochemistry
이오미 ( Lee O-Mi ) - Animal and Plant Quarantine Agency Plant Quarantine Technology Center
손홍주 ( Son Hong-Joo ) - Pusan National University Department of Life Science and Environmental Biochemistry

Abstract


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.

키워드

Enterobacter amnigenus; Improved medium; PGPR; Siderophore

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