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KMID : 0379119920200010065
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Korean Journal of Mycology
1992 Volume.20 No. 1 p.65 ~ p.71
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Identification of Antagonistic Streptomyces Species on Phytophthora nicotianae var. parasitica and Fusarium oxysporum f. sg. vasinfectum Causing Sesame Wilt and Blight
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Abstract
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The two isolates of Streptomyces antagonistic to Phytophthora nicrotianae var. parasitica and Fusarium oxysporum f. sp. vasinfectum were identified as based on the morphological, cultural and physiological characteristics on various culture media. Spore chains of St-11 isolate was rectusflexibilis(RF), whereas the other isolate, St-20, was shown rectinaculum-apertum(RA). Spore surface of St-11 isolate was smooth, while St-20 was spiny. Aerial mycelia of the two isolates were all gray color and growing conditions on media were good as a whole. Any soluble pigment was not shown in cultivation of the two isolates. St-11 isolate showed negative response on starch hydrolysis and gelation liquefaction, whereas St-20 isolate was positive on starch hydrolysis and a negative on gelatin reaction. St-11 isolate was identified as Streptomyces bikiniensis and St-20 Streptomyces echinoruber, respectively.
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