ISSN:
1432-072X
Keywords:
Key words Clostridium viride sp. nov.
;
Clostridium aminovalericum
;
5-Aminovalerate
;
Sulphur reduction
;
Anaerobic degradation
;
2
;
4-Pentadienoyl-CoA reductase
;
5-Hydroxyvaleryl-CoA dehydratase
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Strain T2–7, a 5-aminovalerate-fermenting bacterium previously classified as Clostridium aminovalericum, was further characterized, both physiologically and phylogenetically. Comparative sequencing analysis of the almost complete 16S rDNA revealed that strain T2–7 forms a distinct lineage within a phylogenetically coherent cluster of gram-positive bacteria currently assigned to the genus Clostridium. Strain T2–7 grew with 5-aminovalerate, 5-hydroxyvalerate, 4-hydroxybutyrate, vinylacetate, and crotonate, and required yeast extract and l-cysteine for growth. Other substrates were not utilized. The fermentation products, depending on the growth substrate, were ammonia, acetate, propionate, butyrate, and valerate. Sulphur was reduced by a mechanism not linked to energy conservation. Other acceptors were not utilized. Cells were gram-positive pointed-ended ovals, motile by means of two subpolar flagella, and possessed a gram-positive cell wall structure with an S-layer of hexagonally arranged subunits of 18.5 nm diameter. The DNA mol% G+C was 41.5. Strain T2–7 (DSM 6836) is proposed as the type strain of a new species, Clostridium viride sp. nov.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002030050155
Permalink
