Desulfovibrio marrakechensis sp. nov.. a 1.4-tyrosol-oxidizing, sulfate-reducing bacterium isolated from olive mill wastewater

Fatima Chamkh, Cathrin Spröer, Paulo Costa Lemos, Stephane Besson, Abdel Ghani El Asli, Rhizlane Bennisse, Marc Labat, Maria A. M. Reis, Abdel Illah Qatibi

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Abstract

A novel mesophilic sulfate-reducing bacterium, EMSSDQ4 T, was isolated from olive mill wastewater in the semi-arid region of Morocco (Marrakech). Cells were Gram-negative, catalase-positive, straight rods that were non-motile and non-spore-forming and contained cytochrome c3 and desulfoviridin. The DNA G + C content was 65.1 mol%. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the isolate was a member of the genus Desulfovibrio with Desulfovibrio carbinoliphilus D41T, Desulfovibrio alcoholivorans SPSNT, Desulfovibrio fructosivorans JJT and Desulfovibrio carbinolicus EDK82T as the most closely related strains with validly published names. In addition to the classical substrates used by Desulfovibrio species, the isolate oxidized 1,4-tyrosol, one of the most abundant phenolic compounds occurring in olive mill wastewater, to 4-hydroxyphenylacetate without ring cleavage. D. alcoholivorans SPSNT was also found to carry out this reaction. Under air, strain EMSSDQ4 T exhibited limited growth on lactate and yeast extract in the absence of sulfate. On the basis of genotypic and phenotypic characteristics, it is proposed that the isolate represents a novel species, Desulfovibrio marrakechensis sp. nov. The type strain is EMSSDQ4 T (=DSM 19337T =ATCC BAA-1562T).

Original languageEnglish
Pages (from-to)936-942
Number of pages7
JournalInternational Journal of Systematic and Evolutionary Microbiology
Volume59
Issue number5
DOIs
Publication statusPublished - 10 Nov 2009

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