Sphingomonas elodea

Sphingomonas elodea is a species of bacteria in the genus Sphingomonas.

Sphingomonas elodea
Scientific classification
Kingdom:
Bacteria
Phylum:
Proteobacteria
Class:
Alphaproteobacteria
Order:
Sphingomonadales
Family:
Sphingomonadaceae
Genus:
Sphingomonas
Species:
Sphingomonas elodea
Binomial name
Sphingomonas elodea
Vartak et al., 1995[1]
Synonyms

Pseudomonas elodea Kang et al., 1982

This species is important to humans due to the fact that it produces gellan gum, a suitable agar substitute as a gelling agent in various clinical bacteriological media[2] and especially important for the culture growth of thermophilic microorganisms in solid media.[3] When the gellan gum-producing bacterium was first isolated from a natural lily pond in Pennsylvania in 1978 by a team of microbiologists from the then Kelco Division, Merck & Company (now known as CP Kelco), it was classified as Pseudomonas elodea based on the taxonomic classification of that time.[4] However, the gellan gum-producing bacterium was subsequently re-classified as Sphingomonas elodea based on the current taxonomic classification.[5]

Sphingomonas elodea metabolizes maltodextrin (oligosaccharides of glucose) externally into glucose by the putative exo-acting glucosidase.[6] Sphingomonas elodea utilizes the Entner-Doudoroff pathway for glucose metabolism.[5]

References
  1. Vartak, N.B., Lin, C.C., Cleary, J.M., Fagan, M.J., and Saier, M.H. Jr. "Glucose metabolism in 'Sphingomonas elodea': pathway engineering via construction of a glucose-6-phosphate dehydrogenase insertion mutant." Microbiology (1995) 141, pages 2339-2350.
  2. Shungu D, Valiant M, Tutlane V, Weinberg E, Weissberger B, Koupal L, Gadebusch H, Stapley E (1983). "GELRITE as an Agar Substitute in Bacteriological Media". Applied and Environmental Microbiology. 46: 840–845.
  3. Chi Chung Lin, L. E. Casida Jr. (1984). "GELRITE as a gelling agent in media for the growth of thermophilic microorganisms". Applied and Environmental Microbiology. 47: 427–429.
  4. Kang K.S., Veeder G.T., Mirrasoul P.J., Kaneko T., Cottrell I.W. (1982). "Agar-like polysaccharide produced by a Pseudomonas species: Production and basic properties". Applied and Environmental Microbiology. 43: 1086–1091.CS1 maint: multiple names: authors list (link)
  5. Narendra B. Vartak, Chi Chung Lin, Joseph M. Cleary, Matthew J. Fagan, Milton H. Saier Jr. (1995). "Glucose metabolism in Sphingomonas elodea': pathway engineering via construction of a glucose-6-phosphate dehydrogenase insertion mutant". Microbiology. 141: 2339–2350. doi:10.1099/13500872-141-9-2339.CS1 maint: multiple names: authors list (link)
  6. Chi Chung Lin (1991). "Maltodextrin metabolism in Pseudomonas elodea during gellan fermentation". Proceedings of Annual Meeting of Society of Industrial Microbiology: 86.


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