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从叶际细菌中提取具有抗生物膜和群体感应淬灭活性的物质，以控制多种鱼类病原菌。

Extract from phyllosphere bacteria with antibiofilm and quorum quenching activity to control several fish pathogenic bacteria.

机构信息

Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, Jalan Jenderal Sudirman 51, Jakarta, 12930, Indonesia.

出版信息

BMC Res Notes. 2021 May 25;14(1):202. doi: 10.1186/s13104-021-05612-w.

DOI:10.1186/s13104-021-05612-w
PMID:34034823
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8146661/
Abstract

OBJECTIVE

The objective of this research were to screen quorum quenching activity compound from phyllosphere bacteria as well as antibiofilm activity against several fish pathogen bacteria such as Aeromonas hydrophila, Streptococcus agalactiae, and Vibrio harveyi.

RESULTS

We found eight phyllosphere bacteria isolates with potential quorum quenching activity to inhibit Chromobacterium violaceum as indicator bacteria. Crude extracts (20 mg/mL) showed various antibiofilm activity against fish pathogenic bacteria used in this study. Isolate JB 17B showed the highest activity to inhibit biofilm formation of A. hydrophila and V. harveyi, meanwhile isolate JB 3B showed the highest activity to inhibit biofilm of S. agalactiae. From destruction assay, isolate JB 8F showed the highest activity to disrupt biofilm of A. hydrophila isolate JB 20B showed the highest activity to disrupt biofilm of V. harveyi, isolate JB 17B also showed the highest activity to disrupt biofilm of S. agalactiae.

摘要

目的

本研究旨在从叶际细菌中筛选群体感应淬灭活性化合物，并研究其对几种鱼类病原菌（如嗜水气单胞菌、无乳链球菌和哈维氏弧菌）的抗生物膜活性。

结果

我们发现了 8 株具有潜在群体感应淬灭活性的叶际细菌分离株，可作为指示菌抑制变色杆菌。粗提物（20mg/mL）对本研究中使用的几种鱼类病原菌具有不同的抗生物膜活性。分离株 JB 17B 对抑制嗜水气单胞菌和哈维氏弧菌生物膜形成的活性最高，而分离株 JB 3B 对抑制无乳链球菌生物膜形成的活性最高。从破坏试验结果来看，分离株 JB 8F 对破坏嗜水气单胞菌生物膜的活性最高，分离株 JB 20B 对破坏哈维氏弧菌生物膜的活性最高，分离株 JB 17B 对破坏无乳链球菌生物膜的活性也最高。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/22e9/8146661/2682c6fcf218/13104_2021_5612_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/22e9/8146661/07aa5330d3db/13104_2021_5612_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/22e9/8146661/2682c6fcf218/13104_2021_5612_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/22e9/8146661/07aa5330d3db/13104_2021_5612_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/22e9/8146661/2682c6fcf218/13104_2021_5612_Fig2_HTML.jpg

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