Characterization of Actinomycetes Strains Isolated from Cheliff Estuary in the North-West of Algeria

Type Article
Date 2022-03
Language English
Author(s) Meliani Meriem F1, Denis Françoise2, 3, Mohamed-Benkada Mustapha4, Gabed Noujoud5, Caruso Aurore3, Callac NolwennORCID6, Abi-Ayad Sidi-Mohammed E.A.1
Affiliation(s) 1 : Department of Biotechnology, Faculty of Nature and Life Sciences, University of Oran 1 Ahmed Ben Bella, B.P 1524, El M'Naouer -31000 Oran, Algeria
2 : IRD 207/UPMC, Muséum National d'Histoire Naturelle, Station de Biologie Marine de Concarneau, 29900 Concarneau, France;
3 : Laboratoire Mer, Molécules, Santé, Faculté des Sciences et Techniques, Le Mans Université, 72085 Le Mans, France
4 : Faculty of Nature and Life Sciences, University of Sciences and Technology-Mohamed Boudiaf, El Mnaouar BP 1505, Bir El Djir 31000, Oran, Algeria
5 : High Schcool of Biological Sciences ESSB, Oran, Algeria. Researcher city (Ex. IAP), Essenia -Oran. B P 1042, Saim Mohamed 31003 Oran 31003 Oran Algeria
6 : IFREMER, IRD, CNRS, Univ. Nouvelle Calédonie, Univ. La Réunion, UMR 9220 ENTROPIE, 101 Promenade Roger Laroque, 98897 Nouméa, Nouvelle Calédonie
Source Jordan Journal of Biological Sciences (19956673) (Hashemite University), 2022-03 , Vol. 15 , N. 01 , P. 7-14
DOI 10.54319/jjbs/150102
Keyword(s) Actinomycetes, Cheliff River, Estuary, Sediments, Phylogeny, Antimicrobial activity
Abstract

This study focused on the investigation of Actinomycetes strains isolated from sediment sample of Cheliff River estuary in Mostaganem (North-west of Algeria). Identification of the 5 strains of Actinomycetes isolated from sediments by morphological, biochemical methods and by16S rRNA gene sequence analysis revealed that four strains belonged to the genus Streptomyces and one - to the genus Nocardia. No strains of Actinomycetes were isolated from water samples. The optimum growth of all strains was recorded between 28°C and 30°C and at pH 7-9. All strains had halotolerant and mesophile behavior except SSG which grew very well at 45°C and could be considered as thermotolerant bacteria. Antibacterial activity was tested against five pathogenic bacteria as Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 6538, Salmonella typhi ATCC 9289, Bacillus subtilis ATCC 6633 and Pseudomonas aeruginosa ATCC 2785. All isolated strains exhibited an inhibitory activity against at least one human pathogenic bacterium. Streptomyces sp. strain SSG showed antibacterial effect against four pathogenic tested bacteria followed by Streptomyces sp. SSB1, Streptomyces sp. SSM and Nocardia sp. NSR. This study revealed that Cheliff River estuary contains Actinomycete species (Streptomyces and Nocardia) with proved antibacterial activity and could be a new source for isolation of antibiotic producing bacteria against human pathogenic bacteria

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Meliani Meriem F, Denis Françoise, Mohamed-Benkada Mustapha, Gabed Noujoud, Caruso Aurore, Callac Nolwenn, Abi-Ayad Sidi-Mohammed E.A. (2022). Characterization of Actinomycetes Strains Isolated from Cheliff Estuary in the North-West of Algeria. Jordan Journal of Biological Sciences, 15(01), 7-14. Publisher's official version : https://doi.org/10.54319/jjbs/150102 , Open Access version : https://archimer.ifremer.fr/doc/00762/87390/