Halapricum desulfuricans sp. nov., carbohydrate-utilizing, sulfur-respiring haloarchaea from hypersaline lakes
Autor: | Michel Koenen, Michail M. Yakimov, Jaap S. Sinninghe Damsté, Nicole J. Bale, Enzo Messina, Dimitry Y. Sorokin, Alexander Y. Merkel |
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Rok vydání: | 2021 |
Předmět: |
DNA
Bacterial Anaerobic Hypersaline lakes Haloarchaea Anaerobic Sulfur respiration Carbohydrates Halapricum Anaerobic respiration Sulfide Cellular respiration Carbohydrates chemistry.chemical_element Applied Microbiology and Biotechnology Microbiology chemistry.chemical_compound Sulfite RNA Ribosomal 16S Botany Hypersaline lakes Phylogeny Ecology Evolution Behavior and Systematics Thiosulfate chemistry.chemical_classification Strain (chemistry) biology Haloarchaea Halapricum Sequence Analysis DNA biology.organism_classification Sulfur Halobacteriales Lakes chemistry Sulfur respiration |
Zdroj: | Systematic and Applied Microbiology, 44(6) Systematic and Applied Microbiology |
ISSN: | 0723-2020 |
Popis: | Nine pure cultures of neutrophilic haloaloarchaea capable of anaerobic growth by carbohydrate-dependent sulfur respiration were isolated from hypersaline lakes in southwestern Siberia and southern Russia. According to phylogenomic analysis the isolates were closely related to each other andformed a new species within the genus Halapricum (family Haloarculaceae). They have three types of catabolism: fermentative, resulting in H2 formation; anaerobic respiration using sulfur compounds as e-acceptors and aerobic respiration. Apart from elemental sulfur, all isolates can also use three different sulfoxides as acceptors and the type strain also grows with thiosulfate, reducing it partially to sulfide and sulfite. All strains utilized sugars and glycerol as the e-donors and C source for anaerobic growth and some can also grow with alpha-glucans, such as starch and dextrins. The major respiratory menaquinones are MK-8:8 and MK-8:7, but 5–19% consists of “thermoplasmata” quinones (MMK-8:8 and MMK-8:7), whose occurrence in haloarchaea is unprecedented. On the basis of their unique physiological properties and results of phylogenomic analysis, the isolates are suggested to be classified into a novel species Halapricum desulfuricans sp. nov.(type strain HSR12-2T = JCM 34032T = UNIQEM U1001 T). |
Databáze: | OpenAIRE |
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