Bacillus coahuilensis sp. nov., a moderately halophilic species from a desiccation lagoon in the Cuatro Ciénegas Valley in Coahuila, Mexico

René Cerritos, Pablo Vinuesa, Luis E. Eguiarte, Luis Herrera-Estrella, Luis D. Alcaraz-Peraza, Jackeline L. Arvizu-Gómez, Gabriela Olmedo, Enrique Ramirez, Janet L. Siefert, Valeria Souza

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

A moderately halophilic, Gram-positive and rod-shaped bacterium, strain m4-4T, Was isolated from a Chihuahuan desert lagoon in Cuatro Ciénegas, Coahuila, Mexico. Strain m4-4T was found to grow optimally at 30-37 °C, pH 7.0-8.0 and 5 % NaCl and to tolerate from 0.5 % to 10 % NaCl. It was shown to be aerobic. The genomic DNA G + Ccontent was about 37 mol%. Strain m4-4T exhibited minimal or no growth on most sugars tested. Its major cellular fatty acids were C14:0, C16:0 and C18:1. Based on phylogenetic analysis of 16S rRNA and recA gene sequences, we observed that the closest relatives of the isolate are moderately halophilic Bacillus species, with 16S rRNA gene sequence similarity ranging from 96.6 to 97.4% (Bacillus marisflavi, Bacillus aquimaris and Bacillus vietnamensis). Additionally, using genomic data it was determined that the type strain contains a total of nine rRNA operons with three slightly different sequences. On the basis of phenotypic and molecular properties, strain m4-4T represents a hovel species within the genus Bacillus, for which the name Bacillus coahuilensis sp. no,v. is proposed, with the type strain m4-4T (=NRRL B-41737T =CECT 7197T).

Original languageEnglish
Pages (from-to)919-923
Number of pages5
JournalInternational Journal of Systematic and Evolutionary Microbiology
Volume58
Issue number4
DOIs
StatePublished - Apr 2008

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