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Study on community structure and chemical constituents of fermentation broth in biofouling biofilms
Authors
于洋
周晓群
+4 more
夏传海
姜作真
方圣涛
王建华
Publication date
1 January 2014
Publisher
Abstract
从烟台附近海域通过挂板取样获得了污损微生物膜样品。利用高通量测序鉴定其中细菌有假交替单胞菌(Pseudoalteromonas sp.),芽孢杆菌(Bacillus sp.),盐单胞菌(Halomonas sp.),嗜冷杆菌(Psychrobacter sp.),肠杆菌(Enterobacter sp.)。通过对微生物膜污损细菌进行发酵培养,结合天然产物分离纯化和核磁共振鉴定技术,共从发酵液中分离并鉴定了9种次级代谢产物,其中4种是二酮哌嗪(Diketopiperazine, DKP)类信号分子,环(脯氨酸-甘氨酸)(1),环(脯氨酸-丙氨酸)(2),环(4-羟基-脯氨酸-亮氨酸)(3),环(脯氨酸-酪氨酸)(4),以及尿嘧啶(5),胸腺嘧啶(6),对羟基苯乙醇(7),十五烷酸(8),邻苯二甲酸二(2-乙基己)酯(9)。研究结果表明,烟台海域污损微生物膜中细菌组成多样,以假交替单胞菌和芽孢杆菌为主;污损细菌产生了多种代谢物,其中包括4种DKP类信号分子,该类物质可能对生物污损的发生具有调控作用,为探究生物污损和生物膜的作用机制奠定了基础
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Last time updated on 29/11/2016