Thermophilic bacteria in Moroccan hot springs, salt marshes and desert soils

Brazilian Journal of Microbiology

Tarik Aanniz¹  Mouna Ouadghiri¹  Marouane Melloul¹  Jean Swings¹  Elmostafa Elfahime¹  Jamal Ibijbijen¹  Mohamed Ismaili¹  Mohamed Amar¹ 

关键词: thermophilic bacteria;    hot springs;    diversity;    16S rRNA gene sequencing;    hydrolytic enzymes;   

DOI  :  10.1590/S1517-838246220140219

来源: SciELO

【 摘 要 】

The diversity of thermophilic bacteria was investigated in four hot springs, three salt marshes and 12 desert sites in Morocco. Two hundred and forty (240) thermophilic bacteria were recovered, identified and characterized. All isolates were Gram positive, rod-shaped, spore forming and halotolerant. Based on BOXA1R-PCR and 16S rRNA gene sequencing, the recovered isolates were dominated by the genus Bacillus (97.5%) represented by B. licheniformis (119), B. aerius (44), B. sonorensis (33), B. subtilis (subsp. spizizenii (2) and subsp. inaquosurum (6)), B. amyloliquefaciens (subsp. amyloliquefaciens (4) and subsp. plantarum (4)), B. tequilensis (3), B. pumilus (3) and Bacillus sp. (19). Only six isolates (2.5%) belonged to the genus Aeribacillus represented by A. pallidus (4) and Aeribacillus sp. (2). In this study, B. aerius and B. tequilensis are described for the first time as thermophilic bacteria. Moreover, 71.25%, 50.41% and 5.41% of total strains exhibited high amylolytic, proteolytic or cellulolytic activity respectively.

【 授权许可】

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