Sulfurospirillum deleyianum
Taxonomy
Morphology
Cultural characteristics
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Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae, Genus Sulfurospirillum,
Sulfurospirillum deleyianum Schumacher, Kroneck, and Pfennig 1993. Type species of the genus.
Gram-negative, vibrioid to spirally curved rods, 0.3–0.5 x 1.0–3 μm. Motile by single
polar flagella.
Colonies in deep agar cultures are lens-shaped with a yellowish color due to the
presence of a flexirubin-type pigment. Anoxic growth occurs with hydrogen or formate
as electron donor; acetate and hydrogen carbonate as the carbon source; and nitrate,
nitrite, sulfite, thiosulfate, S, fumarate, malate, and aspartate as electron acceptors.
Exogenous source of reduced sulfur needed. No vitamins or amino acids required.
Grows at temperatures from 20 to 36 ºC, but not at 42 ºC.
Grows in the presence of less than 0.2% NaCl and optimum pH 7.0-7.1.
Isolated from anoxic mud from a forest pond near Heiningen, Germany.
Undetermined.
  1. Don J. Brenner and J.J. Farmer III, 2001. Family I. Campylobacteraceae. In: Bergey’s Manual of Systematic Bacteriology, Second
    edition,Vol 2, part C, George M. Garrity (Editor-in-Chief), pp 1145-1168.
Oxidase-positive. Catalase-negative. Sulfate is not reduced. S is reduced to sulfide.
Nitrate and nitrite are reduced to ammonia. Fumarate and malate can be fermented. Microaerobic growth occurs with 1
-4% oxygen,
utilizing succinate, fumarate, malate, aspartate, pyruvate, oxoglutarate, and oxaloacetate as substrates. Glycerol and acetate are not
oxidized.
(c) Costin Stoica
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