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将细菌四博烯醇生物合成与珊瑚变形联系起来

Amanda T Alker¹, Morgan V Farrell¹, Alyssa M Demko²

¹Department of Biology and Viral Information Institute, San Diego State University, San Diego, CA, 92182, USA.

ISME communications

|September 19, 2023

概括

海洋细菌产生四博烯醇 (TBP),这是一个有助于珊瑚变形的分子. 这项研究证实,活细菌的TBP生物合成对石珊瑚的定居和发展至关重要.

科学领域:

海洋微生物学海洋微生物学
珊瑚生物学珊瑚生物学
生物化学生物化学

背景情况:

珊瑚的健康受到相关细菌的影响.
细菌共生体刺激珊瑚幼虫的定居和变形.
甲 (TBP) 是一种已知的诱导珊瑚变形的细菌代谢物.

研究的目的:

研究TBP生物合成在细菌刺激珊瑚变形中的作用.
为了确认活着的Pseudoalteromonas细菌是否需要TBP生产来诱导Porites astreoides中的变形.
开发用于研究珊瑚-细菌相互作用的遗传工具.

主要方法:

产生了一个Pseudoalteromonas sp. 缺少TBP酶基因 (bmp2) 的PS5突变.
评估了突变和野生类型细菌刺激Porites astreoides转型的能力.
在不同的生长条件下分析了TBP生物合成基因表达.
开发了一种用于细菌遗传操纵和标记的转子子质粒.

主要成果:

bmp2基因对于Pseudoalteromonas sp.中的TBP生物合成至关重要. 这是PS5的版本.
bmp2的突变取消了细菌刺激珊瑚变形的能力.
在静止和生物膜生长阶段,TBP生物合成基因表达最高.
为研究珊瑚相关细菌建立了新的遗传工具.

结论:

活体细菌中的TBP生物合成与珊瑚形态效应功能相关.
证明了TBP在细菌诱导珊瑚变形中的关键作用.
为未来研究珊瑚-微生物共生和珊瑚恢复工作提供了新的遗传工具.

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