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在健康和漂白的 Porites lobata 珊瑚之间,生物活性对粘液相关细菌组成的变化作出反应

Van Ngoc Bui¹, Thi Phuong Thao Nguyen², Huy Duong Nguyen³

¹Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), Hanoi, Viet Nam; Graduate University of Science and Technology (GUST), VAST, Hanoi, Viet Nam.

Journal of invertebrate pathology

|July 3, 2024

概括

珊瑚粘液的生物活性在健康和漂白的 Porites lobata 之间有所不同. 健康的珊瑚粘液显示出更强的抗菌和抗瘤特性,可能是由于更高的生物活性化合物排除了病原体.

科学领域:

海洋生物学海洋生物学
珊瑚礁生态珊瑚礁生态
微生物学微生物学

背景情况:

珊瑚表面粘液层 (SML) 拥有多样化的细菌群落.
珊瑚的健康状况显著影响SML微生物组成.
了解SML生物活性对于珊瑚礁健康评估至关重要.

研究的目的:

研究SML细菌群落与漂白与健康的Porites lobata珊瑚中的生物活性之间的关系.
确定与不同珊瑚健康状况相关的特定细菌属.
从健康和漂白的珊瑚中确定SML的功能生物活性.

主要方法:

在漂白和健康的 Porites lobata 中对SML相关的细菌群体进行比较分析.
对抗Vibrio coralliilyticus的抗菌活性的评估.
对HCT116细胞的抗瘤活性的评估,包括细胞亡和细胞周期分析.
通过光谱测量检测和量化假定生物活性化合物.

主要成果:

在漂白和健康的珊瑚之间观察到细菌群落的显著转变 (p < 0.05).
八种细菌系 (Shewanella,Fusibacter,Halodesulfovibrio,Marinifilum,Endozoicomonas,Litoribacillus,Algicola,Vibrio) 仅在漂白珊瑚中发现,这些细菌系主要存在于白化珊瑚中.
与漂白的珊瑚SML相比,健康的珊瑚SML表现出增强的抗菌和抗瘤活性,增加的亡诱导,以及较高水平的假定生物活性化合物.

结论:

珊瑚的健康状况决定了SML的细菌组成和相关的生物活性.
健康的珊瑚SML具有强大的抗微生物和抗瘤特性,可能由特定的生物活性分子介导.
这些发现凸显了SML生物活性在珊瑚健康维护和病原体防御中的作用.

关键词:

生物活性化合物生物活性化合物生物活性生物活性珊瑚的健康状况珊瑚的健康状况珊瑚粘液相关的细菌珊瑚表面的粘液层是珊瑚的表面粘液层.

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