Thiothrix nivea

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A Microbial Biorealm page on the genus Thiothrix nivea

Classification

Higher order taxa

Bacteria; Proteobacteria; Gammaproteobacteria; Thiotrichales; Thiotrichaceae; Thiothrix

Species

Thiothrix nivea

Cell and colony structure

Thiothrix nivea is a 1-1.5 <&mu>m rod-shaped gram negative bacteria.

Cultures consisted of individual cells, rosettes, and variable length filaments enclosed in sheaths. 1-1.5 um. Gram Negative. Deposit sulfur granules when sulfate or thiosulfate is present. (internally). Located in perifery in invaginations of cytoplasmic membrane (external to cytoplasm). Single cells move with gliding at about 1-2 um/minute. when placed singly, rosettes did not form. Agregated gonidia account for the building of rosettes. Tuft of Fimbriae at one end, the end attached to other cell. NO Flagella. 3

Ecology

T. nivea has been found to thrive within an optimal pH of 7.5 and temperatures ranging from 25-30 &deg C. ¹

Pathology

References

1) Rossetti, Simona, Linda Blackall, et al. (2003) "Phylogenetic and physiological characterization of a heterotrophic, chemolithoautotrophic Thiothrix strain isolated from activated sludge." International Journal of Systematic and Evolutionary Microbiology. Journal. DOI 10.1099/ijs.0.02647-0

2) Gerrity, George. (2005) Bergey's Manual of Sytematic Bacteriology: Volume 2 - The Proteobacteria Part B The Gammaproteobacteria. 2nd Ed. Volume 2. New York: Springer. pp 134-141. Ebook

3)Larkin, John, and Dean Sinabarger. (1983) "Characterization of Thiothrix nivea." International Journal ofSystematic Bacteriology. Volume 33. Issue 4. : pp 841-846. Journal

Edited by Brittany N King, student of Dr. Lisa R. Moore, University of Southern Maine, Department of Biological Sciences, University of Southern Maine Biology Department Website