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Evaluation of Novel Virulent Phages Infecting the Aeromonas Hydrophila and <i> Escherichia coli </i> Isolated from Sewage Water Samples

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Last updated: 01 Jan 2025

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Abstract

MULTIDRUG-resistant bacteria are now emerging for almost all the present-day antibiotics. Aeromonas hydrophila D2007 and Escherichia coli W102 were isolated from fresh food and drinking water samples and they were resistant to 57.14% and 85.71% of tested common antibiotics respectively. Three bacteriophages (phages) were isolated from sewage samples. Morphological examinations suggested that phage ΦAHP7, which infects A. hydrophila D2007, belongs to the Myoviridae family and other phages ΦECP8 and ΦECP9 capable of lysing E. coil W102 belongs to Siphoviridae and Podoviridae families, respectively. For the three phages, the optimal multiplicity of infection (MOI) was calculated to be 0.001. Phages were characterized by determining their host range and stability in pHs, temperatures, and salinity. The latent periods of phages ΦAHP7, ΦECP8, and ΦECP9 were 10, 20 and 10min with average burst sizes of 53.5±0.5, 26.5±0.5 and 67.5±0.5 phages per infected cell, respectively. The three phages gradually reduced OD600 and are able to stop the growth of A. hydrophila D2007 and E. coli W102 in vitro at a low MOI of 0.001. Phages ΦAHP7, ΦECP8, and ΦECP9 treatments achieved 1.55, 1.68 and 2.28 log CFU/g (P< 0.01) reduction of viable bacterial number in red cabbage and 1.48, 1.38 and 1.68 log CFU/g (P< 0.01) reduction in tomato after 30 min at room temperature (28°C) respectively. Applications of lytic ΦAHP7, ΦECP8, and ΦECP9 bacteriophages lead to a rapid reduction of A. hydrophila D2007 and E. coli W102 counts in fresh food for human consumption.

DOI

10.21608/ejbo.2020.20950.1411

Keywords

Aeromonas hydrophila, bacteriophage, Escherichia coli, ΦAHP7, ΦECP8, ΦECP9

Authors

First Name

Mohamed

Last Name

Nasr-Eldin

MiddleName

-

Affiliation

Department of Botany and Microbiology, Faculty of Science, Benha University, 13518, Benha, Egypt

Email

nasreldeen.m@gmail.com

City

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Orcid

-

First Name

Aya

Last Name

Soliman

MiddleName

Ayman

Affiliation

Department of Botany and Microbiology, Faculty of Science, Benha University, 13518, Benha, Egypt

Email

m.jasmen@yahoo.com

City

-

Orcid

-

Volume

60

Article Issue

3

Related Issue

19388

Issue Date

2020-12-01

Receive Date

2020-03-08

Publish Date

2020-12-01

Page Start

805

Page End

823

Print ISSN

0375-9237

Online ISSN

2357-0350

Link

https://ejbo.journals.ekb.eg/article_103622.html

Detail API

https://ejbo.journals.ekb.eg/service?article_code=103622

Order

37

Type

Original Article

Type Code

111

Publication Type

Journal

Publication Title

Egyptian Journal of Botany

Publication Link

https://ejbo.journals.ekb.eg/

MainTitle

Evaluation of Novel Virulent Phages Infecting the Aeromonas Hydrophila and <i> Escherichia coli </i> Isolated from Sewage Water Samples

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Article

Created At

22 Jan 2023