A newly isolated Pseudomonas otitidis phage, vB_PotS-PotUPM1 from tilapia in Malaysia

A new Pseudomonas species, Pseudomonas otitidis was first known as an otic infectious agent in human. The presence of an inherent metallo-β-lactamase gene and its recent emergence in aquaculture underscore its potential zoonotic pathogenicity. The present study is aimed to characterize P. otitidis N...

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Main Authors: Tee, An Nie, Megat Mazhar Khair, Megat Hamzah, Chong, Chou Min, Mohd Shaufi, Mohd Asrore, Yusoff, Khatijah, Yam, Hok Chai, Gan, Han Ming, Song, Adelene Ai-Lian
Format: Article
Language:English
Published: Elsevier B.V. 2024
Online Access:http://psasir.upm.edu.my/id/eprint/106116/1/1-s2.0-S2352513423004222-main.pdf
http://psasir.upm.edu.my/id/eprint/106116/
https://linkinghub.elsevier.com/retrieve/pii/S2352513423004222
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spelling my.upm.eprints.1061162024-10-03T04:58:08Z http://psasir.upm.edu.my/id/eprint/106116/ A newly isolated Pseudomonas otitidis phage, vB_PotS-PotUPM1 from tilapia in Malaysia Tee, An Nie Megat Mazhar Khair, Megat Hamzah Chong, Chou Min Mohd Shaufi, Mohd Asrore Yusoff, Khatijah Yam, Hok Chai Gan, Han Ming Song, Adelene Ai-Lian A new Pseudomonas species, Pseudomonas otitidis was first known as an otic infectious agent in human. The presence of an inherent metallo-β-lactamase gene and its recent emergence in aquaculture underscore its potential zoonotic pathogenicity. The present study is aimed to characterize P. otitidis NK1 and its bacteriophage vBPotS-PotUPM1 (PotUPM1), which were isolated from an infected tilapia fish farm in Malaysia. P. otitidis NK1 showed beta-hemolysis on blood agar and is resistant to several antibiotics. Its genome size was 6067,534 bp, with an average nucleotide identity of less than 99 to all P. otitidis genome assemblies in GenBank, making it a novel strain of P. otitidis. The phage PotUPM1 has a latent period of 45 min and a burst size of 405 phage particles per bacterium. It effectively inhibited the growth of P. otitidis NK1 even at a low multiplicity of infection of 0.001 up to 9-hour post-inoculation. Transmission electron microscopy showed that it has a prolate head and a long, non-contractile tail, resembling those in the Siphoviridae family. Based on bioinformatic analysis, PotUPM1 has no resistance or virulence genes and is a lysogenic phage based on the presence of an integrase gene in the phage genome. Similarity analysis showed that PotUPM1 may represent a novel viral species with less than 95 nucleotide sequence similarity to other characterized phages. The findings of this study could provide an insight on the occurrence of P. otitidis in the aquaculture industry and lay a basis for the application of phage or phage-derived proteins against pathogenic P. otitidis to alleviate antimicrobial resistance. Elsevier B.V. 2024 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/106116/1/1-s2.0-S2352513423004222-main.pdf Tee, An Nie and Megat Mazhar Khair, Megat Hamzah and Chong, Chou Min and Mohd Shaufi, Mohd Asrore and Yusoff, Khatijah and Yam, Hok Chai and Gan, Han Ming and Song, Adelene Ai-Lian (2024) A newly isolated Pseudomonas otitidis phage, vB_PotS-PotUPM1 from tilapia in Malaysia. Aquaculture Reports, 34. art. no. 101883. pp. 1-13. ISSN 2352-5134 https://linkinghub.elsevier.com/retrieve/pii/S2352513423004222 10.1016/j.aqrep.2023.101883
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description A new Pseudomonas species, Pseudomonas otitidis was first known as an otic infectious agent in human. The presence of an inherent metallo-β-lactamase gene and its recent emergence in aquaculture underscore its potential zoonotic pathogenicity. The present study is aimed to characterize P. otitidis NK1 and its bacteriophage vBPotS-PotUPM1 (PotUPM1), which were isolated from an infected tilapia fish farm in Malaysia. P. otitidis NK1 showed beta-hemolysis on blood agar and is resistant to several antibiotics. Its genome size was 6067,534 bp, with an average nucleotide identity of less than 99 to all P. otitidis genome assemblies in GenBank, making it a novel strain of P. otitidis. The phage PotUPM1 has a latent period of 45 min and a burst size of 405 phage particles per bacterium. It effectively inhibited the growth of P. otitidis NK1 even at a low multiplicity of infection of 0.001 up to 9-hour post-inoculation. Transmission electron microscopy showed that it has a prolate head and a long, non-contractile tail, resembling those in the Siphoviridae family. Based on bioinformatic analysis, PotUPM1 has no resistance or virulence genes and is a lysogenic phage based on the presence of an integrase gene in the phage genome. Similarity analysis showed that PotUPM1 may represent a novel viral species with less than 95 nucleotide sequence similarity to other characterized phages. The findings of this study could provide an insight on the occurrence of P. otitidis in the aquaculture industry and lay a basis for the application of phage or phage-derived proteins against pathogenic P. otitidis to alleviate antimicrobial resistance.
format Article
author Tee, An Nie
Megat Mazhar Khair, Megat Hamzah
Chong, Chou Min
Mohd Shaufi, Mohd Asrore
Yusoff, Khatijah
Yam, Hok Chai
Gan, Han Ming
Song, Adelene Ai-Lian
spellingShingle Tee, An Nie
Megat Mazhar Khair, Megat Hamzah
Chong, Chou Min
Mohd Shaufi, Mohd Asrore
Yusoff, Khatijah
Yam, Hok Chai
Gan, Han Ming
Song, Adelene Ai-Lian
A newly isolated Pseudomonas otitidis phage, vB_PotS-PotUPM1 from tilapia in Malaysia
author_facet Tee, An Nie
Megat Mazhar Khair, Megat Hamzah
Chong, Chou Min
Mohd Shaufi, Mohd Asrore
Yusoff, Khatijah
Yam, Hok Chai
Gan, Han Ming
Song, Adelene Ai-Lian
author_sort Tee, An Nie
title A newly isolated Pseudomonas otitidis phage, vB_PotS-PotUPM1 from tilapia in Malaysia
title_short A newly isolated Pseudomonas otitidis phage, vB_PotS-PotUPM1 from tilapia in Malaysia
title_full A newly isolated Pseudomonas otitidis phage, vB_PotS-PotUPM1 from tilapia in Malaysia
title_fullStr A newly isolated Pseudomonas otitidis phage, vB_PotS-PotUPM1 from tilapia in Malaysia
title_full_unstemmed A newly isolated Pseudomonas otitidis phage, vB_PotS-PotUPM1 from tilapia in Malaysia
title_sort newly isolated pseudomonas otitidis phage, vb_pots-potupm1 from tilapia in malaysia
publisher Elsevier B.V.
publishDate 2024
url http://psasir.upm.edu.my/id/eprint/106116/1/1-s2.0-S2352513423004222-main.pdf
http://psasir.upm.edu.my/id/eprint/106116/
https://linkinghub.elsevier.com/retrieve/pii/S2352513423004222
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score 13.222552