Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae

Roager, Line; Athena-Vasileiadi, Despoina; Gram, Lone; Sonnenschein, Eva C.

doi:10.1128/aem.01439-23

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Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae

Line Roager

, Despoina Athena-Vasileiadi, Lone Gram

, Eva C. Sonnenschein

Applied and Environmental Microbiology, Volume: 90, Issue: 3

Swansea University Author: Eva C. Sonnenschein

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DOI (Published version): 10.1128/aem.01439-23

Abstract

Aquaculture provides a rich resource of high-quality protein; however, the production is challenged by emerging pathogens such as Vibrio crassostreae. While probiotic bacteria have been proposed as a sustainable solution to reduce pathogen load in aquaculture, their application requires a comprehens...

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Published in:	Applied and Environmental Microbiology
ISSN:	0099-2240 1098-5336
Published:	American Society for Microbiology 2024
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa66579
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While probiotic bacteria have been proposed as a sustainable solution to reduce pathogen load in aquaculture, their application requires a comprehensive assessment across the aquaculture food chain. The purpose of this study was to determine the antagonistic effect of the potential probiotic bacterium Phaeobacter piscinae against the emerging fish pathogen V. crassostreae in aquaculture feed algae that can be an entry point for pathogens in fish and shellfish aquaculture. P. piscinae strain S26 produces the antibacterial compound tropodithietic acid (TDA). In a plate-based assay, P. piscinae S26 was equally to more effective than the well-studied Phaeobacter inhibens DSM17395 in its inhibition of the fish pathogens Vibrio anguillarum 90-11-286 and V. crassostreae DMC-1. When co-cultured with the microalgae Tetraselmis suecica and Isochrysis galbana, P. piscinae S26 reduced the maximum cell density of V. crassostreae DMC-1 by 2 log and 3–4 log fold, respectively. A TDA-deficient mutant of P. piscinae S26 inhibited V. crassostreae DMC-1 to a lesser extent than the wild type, suggesting that the antagonistic effect involves TDA and other factors. TDA is the prime antagonistic agent of the inhibition of V. anguillarum 90-11-286. Comparative genomics of V. anguillarum 90-11-286 and V. crassostreae DMC-1 revealed that V. crassostreae DMC-1 carries a greater arsenal of antibiotic resistance genes potentially contributing to the reduced effect of TDA. 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spelling	v2 66579 2024-06-03 Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae f6a4027578a15ea3e6453a54b849c686 0000-0001-6959-5100 Eva C. Sonnenschein Eva C. Sonnenschein true false 2024-06-03 BGPS Aquaculture provides a rich resource of high-quality protein; however, the production is challenged by emerging pathogens such as Vibrio crassostreae. While probiotic bacteria have been proposed as a sustainable solution to reduce pathogen load in aquaculture, their application requires a comprehensive assessment across the aquaculture food chain. The purpose of this study was to determine the antagonistic effect of the potential probiotic bacterium Phaeobacter piscinae against the emerging fish pathogen V. crassostreae in aquaculture feed algae that can be an entry point for pathogens in fish and shellfish aquaculture. P. piscinae strain S26 produces the antibacterial compound tropodithietic acid (TDA). In a plate-based assay, P. piscinae S26 was equally to more effective than the well-studied Phaeobacter inhibens DSM17395 in its inhibition of the fish pathogens Vibrio anguillarum 90-11-286 and V. crassostreae DMC-1. When co-cultured with the microalgae Tetraselmis suecica and Isochrysis galbana, P. piscinae S26 reduced the maximum cell density of V. crassostreae DMC-1 by 2 log and 3–4 log fold, respectively. A TDA-deficient mutant of P. piscinae S26 inhibited V. crassostreae DMC-1 to a lesser extent than the wild type, suggesting that the antagonistic effect involves TDA and other factors. TDA is the prime antagonistic agent of the inhibition of V. anguillarum 90-11-286. Comparative genomics of V. anguillarum 90-11-286 and V. crassostreae DMC-1 revealed that V. crassostreae DMC-1 carries a greater arsenal of antibiotic resistance genes potentially contributing to the reduced effect of TDA. In conclusion, P. piscinae S26 is a promising new candidate for inhibition of emerging pathogens such as V. crassostreae DMC-1 in algal feed systems and could contribute to a more sustainable aquaculture industry. Journal Article Applied and Environmental Microbiology 90 3 American Society for Microbiology 0099-2240 1098-5336 aquaculture, probiotics, fish pathogens, microalgae 20 3 2024 2024-03-20 10.1128/aem.01439-23 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University This work was supported by the Danish National Research Foundation to the Center for Microbial Secondary Metabolites (DNRF137) and Novo Nordisk Foundation (grant numbers NNF20OC0064249 [EngAlMi] and NNF19OC0055625 [IMLiB]). 2024-07-24T13:03:03.4794841 2024-06-03T14:14:38.4385124 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Line Roager 0000-0002-7033-7309 1 Despoina Athena-Vasileiadi 2 Lone Gram 0000-0002-1076-5723 3 Eva C. Sonnenschein 0000-0001-6959-5100 4 66579__30963__ec41db8b1ef347a4a63e818e0f65a623.pdf 66579.VoR.pdf 2024-07-24T13:01:43.9606367 Output 2352985 application/pdf Version of Record true Copyright © 2024 Roager et al. This is an openaccess article distributed under the terms of the Creative Commons Attribution 4.0 International license. true eng https://creativecommons.org/licenses/by/4.0/
title	Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae
spellingShingle	Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae Eva C. Sonnenschein
title_short	Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae
title_full	Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae
title_fullStr	Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae
title_full_unstemmed	Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae
title_sort	Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae
author_id_str_mv	f6a4027578a15ea3e6453a54b849c686
author_id_fullname_str_mv	f6a4027578a15ea3e6453a54b849c686_***_Eva C. Sonnenschein
author	Eva C. Sonnenschein
author2	Line Roager Despoina Athena-Vasileiadi Lone Gram Eva C. Sonnenschein
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container_issue	3
publishDate	2024
institution	Swansea University
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doi_str_mv	10.1128/aem.01439-23
publisher	American Society for Microbiology
college_str	Faculty of Science and Engineering
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description	Aquaculture provides a rich resource of high-quality protein; however, the production is challenged by emerging pathogens such as Vibrio crassostreae. While probiotic bacteria have been proposed as a sustainable solution to reduce pathogen load in aquaculture, their application requires a comprehensive assessment across the aquaculture food chain. The purpose of this study was to determine the antagonistic effect of the potential probiotic bacterium Phaeobacter piscinae against the emerging fish pathogen V. crassostreae in aquaculture feed algae that can be an entry point for pathogens in fish and shellfish aquaculture. P. piscinae strain S26 produces the antibacterial compound tropodithietic acid (TDA). In a plate-based assay, P. piscinae S26 was equally to more effective than the well-studied Phaeobacter inhibens DSM17395 in its inhibition of the fish pathogens Vibrio anguillarum 90-11-286 and V. crassostreae DMC-1. When co-cultured with the microalgae Tetraselmis suecica and Isochrysis galbana, P. piscinae S26 reduced the maximum cell density of V. crassostreae DMC-1 by 2 log and 3–4 log fold, respectively. A TDA-deficient mutant of P. piscinae S26 inhibited V. crassostreae DMC-1 to a lesser extent than the wild type, suggesting that the antagonistic effect involves TDA and other factors. TDA is the prime antagonistic agent of the inhibition of V. anguillarum 90-11-286. Comparative genomics of V. anguillarum 90-11-286 and V. crassostreae DMC-1 revealed that V. crassostreae DMC-1 carries a greater arsenal of antibiotic resistance genes potentially contributing to the reduced effect of TDA. In conclusion, P. piscinae S26 is a promising new candidate for inhibition of emerging pathogens such as V. crassostreae DMC-1 in algal feed systems and could contribute to a more sustainable aquaculture industry.
published_date	2024-03-20T13:03:02Z
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Antagonistic activity of Phaeobacter piscinae against the emerging fish pathogen Vibrio crassostreae in aquaculture feed algae

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