The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Screening of Multifunctional Bacteria with Biocontrol and Biofertilizing Effects

식물병원진균의 생물적 방제 및 생물비료 활성을 갖는 다기능 세균의 탐색

  • Received : 2011.06.17
  • Accepted : 2011.07.25
  • Published : 2011.08.01
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Abstract

In the course of search for multifunctional microbial inoculants, three Bacillus strains (BS11-1,BS11-2,BS11-3) with biological control and biofertilizing effects were selected. In this study, their ability for solubilization of insoluble phosphate, production of indole-3-acetic acid (IAA), siderophore, and hydrolytic enzymes, and antagonism against phytopathogenic fungi were estimated. All strains produced IAA and siderophore depending on culture time and produced a visible clear zone on agar plate containing 0.5% carboxylmethyl cellulose as a carbon source. Also, these strains exhibited antifungal activities against phytopathogenic fungi, Botrytis cinerea, Cylindrocarpon destructans, Fusarium oxysporum, Rhizoctonia solani, and Phytophthora capsici.

작물의 생육촉진 및 식물 진균병의 생물방제능을 동시에 나타내는 다기능성 미생물제제를 개발하고자 토양으로부터 분리하여 보관중인 세균 120종의 활성을 검토하였다. 그 중 siderophore를 생성하고 항진균 활성을 보이는 BS11-1, BS11-2, BS11-3를 선발하였다. 이들 균주는 cellulase, protease 같은 lytic enzyme을 생산하였으며 식물성장 촉진 호르몬중의 하나인 IAA를 생성하였다. 이들 선발균들에 의한 식물 생장 촉진을 조사한 결과, BS11-1, BS11-2, BS11-3 균 배양액 관주 시 고추 유묘의 생육을 132%, 122%, 120% 증가 시켰으며, BS11-1, BS11-2 균주의 경우 뿌리의 신장 및 생육이 촉진되었음을 확인 할 수 있었다.

Keywords

References

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