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Diversity of culturable moderately halophilic and halotolerant bacteria in a marsh and two salterns a protected ecosystem of Lower Loukkos (Morocco)

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CTB-BTC project MOR0301852
Abstract
To study the biodiversity of halophilic bacteria in a protected wetland located in Loukkos (Northwest, Morocco), a total of 124 strains were recovered from sediment samples from a marsh and salterns. 120 isolates (98%) were found to be moderately halophilic bacteria; growing in salt ranges of 0.5 to 20%. Of 124 isolates, 102 were Gram-positive while 22 were Gram negative. All isolates were identified based on 16S rRNA gene phylogenetic analysis and characterized phenotypically and by screening for extracellular hydrolytic enzymes. The Gram-positive isolates were dominated by the genus Bacillus (89%) and the others were assigned to Jeotgalibacillus, Planococcus, Staphylococcus and Thalassobacillus. The Gram negative isolates were dominated by the genus Vibrio (41%) and the others were assigned to Halomonas, Psychrobacter, Marinobacterium, Pseudoalteromonas, Salinivibrio and Photobacterium. The growth of strains obtained under different physico-chemical conditions and the screening for hydrolytic enzymes showed a high diversity even within the same species.
Keywords
hydrolytic enzymes, sediment, biodiversity, 16S rRNA gene sequencing, Lower Loukkos, Halophilic bacteria, SP NOV., YELLOW SEA, MICROBIAL DIVERSITY, SOLAR SALTERNS, TIDAL FLAT, KOREA, WATER, MICROORGANISMS, ENVIRONMENT, PROFILES

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Chicago
Berrada, Imane, Anne Willems, Paul De Vos, ElMostafa El Fahime, Jean Swings, Najib Bendaou, Marouane Melloul, and Mohamed Amar. 2012. “Diversity of Culturable Moderately Halophilic and Halotolerant Bacteria in a Marsh and Two Salterns a Protected Ecosystem of Lower Loukkos (Morocco).” African Journal of Microbiology Research 6 (10): 2419–2434.
APA
Berrada, I., Willems, A., De Vos, P., El Fahime, E., Swings, J., Bendaou, N., Melloul, M., et al. (2012). Diversity of culturable moderately halophilic and halotolerant bacteria in a marsh and two salterns a protected ecosystem of Lower Loukkos (Morocco). AFRICAN JOURNAL OF MICROBIOLOGY RESEARCH, 6(10), 2419–2434.
Vancouver
1.
Berrada I, Willems A, De Vos P, El Fahime E, Swings J, Bendaou N, et al. Diversity of culturable moderately halophilic and halotolerant bacteria in a marsh and two salterns a protected ecosystem of Lower Loukkos (Morocco). AFRICAN JOURNAL OF MICROBIOLOGY RESEARCH. 2012;6(10):2419–34.
MLA
Berrada, Imane, Anne Willems, Paul De Vos, et al. “Diversity of Culturable Moderately Halophilic and Halotolerant Bacteria in a Marsh and Two Salterns a Protected Ecosystem of Lower Loukkos (Morocco).” AFRICAN JOURNAL OF MICROBIOLOGY RESEARCH 6.10 (2012): 2419–2434. Print.
@article{3125831,
  abstract     = {To study the biodiversity of halophilic bacteria in a protected wetland located in Loukkos (Northwest, Morocco), a total of 124 strains were recovered from sediment samples from a marsh and salterns. 120 isolates (98\%) were found to be moderately halophilic bacteria; growing in salt ranges of 0.5 to 20\%. Of 124 isolates, 102 were Gram-positive while 22 were Gram negative. All isolates were identified based on 16S rRNA gene phylogenetic analysis and characterized phenotypically and by screening for extracellular hydrolytic enzymes. The Gram-positive isolates were dominated by the genus Bacillus (89\%) and the others were assigned to Jeotgalibacillus, Planococcus, Staphylococcus and Thalassobacillus. The Gram negative isolates were dominated by the genus Vibrio (41\%) and the others were assigned to Halomonas, Psychrobacter, Marinobacterium, Pseudoalteromonas, Salinivibrio and Photobacterium. The growth of strains obtained under different physico-chemical conditions and the screening for hydrolytic enzymes showed a high diversity even within the same species.},
  author       = {Berrada, Imane and Willems, Anne and De Vos, Paul and El Fahime, ElMostafa and Swings, Jean and Bendaou, Najib and Melloul, Marouane and Amar, Mohamed},
  issn         = {1996-0808},
  journal      = {AFRICAN JOURNAL OF MICROBIOLOGY RESEARCH},
  language     = {eng},
  number       = {10},
  pages        = {2419--2434},
  title        = {Diversity of culturable moderately halophilic and halotolerant bacteria in a marsh and two salterns a protected ecosystem of Lower Loukkos (Morocco)},
  url          = {http://dx.doi.org/10.5897/AJMR-11-1490},
  volume       = {6},
  year         = {2012},
}

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