A carregar...
Publicação
Desulfovibrio marrakechensis sp. nov.. a 1.4-tyrosol-oxidizing, sulfate-reducing bacterium isolated from olive mill wastewater
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 129.17 KB | Adobe PDF |
Orientador(es)
Resumo(s)
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).
Descrição
F. C. received a doctoral fellowship (Scientific Research and Management training) from the Moroccan Minister for National Education and A.-I.Q. received a senior fellowship from the French Research Institute for Development (IRD). This work was supported by the PROTARS III (ref D14/15) Moroccan programme. We thank the Gabinete de Relacoes Internacionais da Ciencia e do Ensino Superior of Portugal (GRICES) and the Centre National de la Recherche Scientifique et Technique of Morocco (CNRST) for supporting the mobility of the researchers in this project. The authors also wish to thank professor Kjeld Ingvorsen for preparing electron micrographs and Professors Allen Toby and Michel Magot for helpful discussions. The authors are grateful to Maria Luisa Machado, Jennifer Gregor and Jean Lorquin for technical assistance and Nancy Nichols for improving the Manuscript.
Palavras-chave
Microbiology Ecology, Evolution, Behavior and Systematics SDG 6 - Clean Water and Sanitation