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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2009.1
- 수록면
- 531 - 538 (8page)
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초록· 키워드
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In this study, we invested the synergistic plant promotion ability of red-pepper and tomato by the selected multi-functional PGPR: Bacillus subtilis AH18 and Bacillus licheniformis K11. The both strains of PGPR B. licheniformis K11 and B. subtilis AH18 produced the auxins, antifungal ${\beta}$-glucannase, and siderophores, and were capable of solubilizing insoluble phosphates. The auxins produced by B. subtilis AH18 and B. licheniformis K11 were purified and identified from culture filtrates using PVP column, Sephadex LH-20 column chromatography, HPLC, GC-MS, and $^1HNMR$. The purified $auxin_{AH18}$ was confirmed to have derivatives composed with IAA of MW 175, IBA of MW 203, and IPA of MW 189. The amount ratio of $auxin_{AH18}$ producing was as follows: IAA:IBA:IPA=1:1.5:2.6. The purified $auxin_{K11}$ consisted of an IBA of MW 203. B. licheniformis K11 and B. subtilis AH18 stimulated seed germination and root growth of red-pepper, tomato, green onions, and spinach. In particular, red-pepper and tomato plants displayed up to 20% increased root, stem, and leaf growth. When the pots were simultaneously treated with a combination of $auxin_{AH18}$ and $auxin_{K11}$, the growth rates of red pepper and tomato plants were over 20% greater than observed with treatment with either auxin alone.
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