Knoellia Explained

Knoellia is a genus of Gram positive, aerobic, non-endosporeforming bacteria. Species in this genus are mesophilic and have cells that are irregular rods or coccoid.[1]

The genus was first proposed in 2002. The type species K. sinensis was first isolated from cave soil in Guilin, China. The genus is named after Hans Knöll, a German physician and microbiologist, and a "pioneer in antibiotic research. Other members of this genus have been initially isolated from soil, air, and pig manure.[2] K. remsis was originally classified in the genus Tetrasphaera, but was reclassified into Knoellia in 2018.[3]

Species from this genus produce white or cream-colored colonies on R2A agar, expect for K. flava, which produces yellow colonies. All species are mesophilic; optimum growth is between 28 and 35 °C and pH 5.0-9.0.[1] [4] K. remsis is the only species capable of growth above 42 °C.[5]

Notes and References

  1. Book: 10.1002/9781118960608.gbm00079. Knoellia. Bergey's Manual of Systematics of Archaea and Bacteria. 2015. Groth. Ingrid. 1–11. 9781118960608.
  2. Shin . N.-R. . Roh . S. W. . Kim . M.-S. . Jung . M.-J. . Whon . T. W. . Bae . J.-W. . Knoellia locipacati sp. nov., from soil of the Demilitarized Zone in South Korea . International Journal of Systematic and Evolutionary Microbiology . 18 March 2011 . 62 . 2 . 342–346 . 10.1099/ijs.0.031880-0. 21421930 . free .
  3. Nouioui . Imen . Carro . Lorena . García-López . Marina . Meier-Kolthoff . Jan P. . Woyke . Tanja . Kyrpides . Nikos C. . Pukall . Rüdiger . Klenk . Hans-Peter . Goodfellow . Michael . Göker . Markus . Genome-Based Taxonomic Classification of the Phylum Actinobacteria . Frontiers in Microbiology . 22 August 2018 . 9 . 2007 . 10.3389/fmicb.2018.02007. 30186281 . 6113628 . free .
  4. Yu . X. . Du . Y. . Wang . G. . Knoellia flava sp. nov., isolated from pig manure . International Journal of Systematic and Evolutionary Microbiology . 25 March 2011 . 62 . 2 . 384–389 . 10.1099/ijs.0.030932-0. 21441369 . free .
  5. Osman . Shariff . Moissl . Christine . Hosoya . Naofumi . Briegel . Ariane . Mayilraj . Shanmugam . Satomi . Masataka . Venkateswaran . Kasthuri . Tetrasphaera remsis sp. nov., isolated from the Regenerative Enclosed Life Support Module Simulator (REMS) air system . International Journal of Systematic and Evolutionary Microbiology . 1 December 2007 . 57 . 12 . 2749–2753 . 10.1099/ijs.0.65137-0. 18048719 . free .

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