토양 방선균 Streptomyces sp. MG 121의 항균활성 및 고추 생육에 미치는 효과

다국어 초록 (Multilingual Abstract)

The microorganisms with the antifungal activity against Phytophthora capsici and Colletotrichum acutatum and
the plant growth promotion activity were screened from forest soils of Moon-gyeong (Juheul Mountain),
Gyeongsangbuk-do. One of the isolates, strain MG 121 showed antifungal activity against P. capsici and C.
acutatum and possessed phosphate solubilization activity was selected to development biocontrol agent. The
strain MG 121 was identified as Streptomyces sp. by analysis of 16S rDNA. On the test with pepper fruits, the
strain inhibited disease incidences of late blight and anthracnose over 80%. In greenhouse test, plant height,
the number of leaf, fresh weight and roots length of pepper plants upon treatment of culture suspension of
Streptomyces sp. MG 121 were significantly higher than those without the bacterial cells. In addition, strain
MG 121 was capable to solublize rock-phosphate after incubation for 144 hours in potate dextrose broth. The
concentration of soluble phosphate in PDB amended with 0.5% rock-phosphate was increased up to
765 μg/ml.

참고문헌 (Reference)

1 "ialicum resistant to benomyl and imazail on citrus fruit from differentgeographic origins" 1098-1100, 1991

2 "The peptide antibiotics of Bacillus" 449-474, 1977

3 "Technical and commercialaspects of biocontrol produts" 315-321, 1993

4 "Production of weakacid by anaerobic fermentation of soil and antifungal effect" 17 : 691-694, 2007

5 "Plant Pathology" Academic Press, Inc., New York 635-, 1997

6 "Phytophthora disease in Korea" RDA 226-, 2000

7 "Inhibitory effect of Bacillus subtilis on Uromycesphaseoli and on development of rust pustules on bean leaves" 1148-73 1152, 1983

8 "Growth promotion ofcanola seedlings by a strain of Pseudomonas putida undergnotobiotic conditions" 251-255, 1987

9 "Fungicide resistance in North America" 1988

10 "Development of a biofertilizer using phosphatesolubilizig fungus, Penicillium sp. PS-113" 116-113, 2001

11 "Control of soil-borne pathogens with livingbacteria and fungi" 355-363, 1993

12 "Chitinase production and Isolation of Serratia plymuthica AL-1 antagonistic to white rot fungi from Allium fistulosum roots" 30 : 135-141, 2002

13 "Biological control of fungal pathogens" 37-43, 1994

14 "Antifungal activity of Streptomyces griseofuscus 200401 against pathogens causing late blight and anthracnose on pepper" 9 : 102-107, 2005

15 "Antifungal activity and identification of an Actinomycetes strain isolated from mummified peaches" 28 : 161-166, 2000