Possible role of xanthobaccins produced by <i>Stenotrophomonas</i> sp strain SB-K88 in suppression of sugar beet damping-off disease

作     者：Nakayama, T Homma, Y Hashidoko, Y Mizutani, J Tahara, S 

作者机构：Hokkaido Univ Fac Agr Dept Appl Biosci Kita Ku Sapporo Hokkaido 0608589 Japan Hokkaido Natl Agr Expt Stn Upland Agr Res Ctr Sapporo Hokkaido 0820071 Japan Japan Sci & Technol Corp CREST Kawaguchi 3320012 Japan 

出 版 物：《APPLIED AND ENVIRONMENTAL MICROBIOLOGY》 (应用与环境微生物学)

年 卷 期：1999年第65卷第10期

页      面：4334-4339页

核心收录：

学科分类：0710[理学-生物学] 1007[医学-药学(可授医学、理学学位)] 100705[医学-微生物与生化药学] 07[理学] 0836[工学-生物工程] 071005[理学-微生物学] 10[医学] 

主　　题：抗菌药/药理学 抗真菌药/分离和提纯 抗真菌药/药理学 藜科/微生物学 大环内酯类 腐霉菌属/药物作用 土壤微生物学 黄单胞菌属/生理学 

摘      要：Three antifungal compounds, designated xanthobaccins A, B, and C, were isolated from the culture fluid of Stenotrophomonas sp, strain SB-K88, a rhizobacterium of sugar beet that suppresses damping-off disease. Production of xanthobaccin A in culture media was compared with the disease suppression activities of strain SB-K88 and less suppressive strains that were obtained by subculturing,train SB-K88 was applied to sugar beet seeds, and production of xanthobaccin A in the rhizosphere of seedlings was confirmed by using a test tube culture system under hydroponic culture conditions;3 mu g of xanthobaccin A was detected in the rhizosphere on a per-plant basis. Direct application of purified xanthobaccin A to seeds suppressed damping-off disease in soil naturally infested by Pythium spp. We suggest that xanthobaccin A produced by strain SB-K88 plays a key role in suppression of sugar beet damping-off disease.