Knoellia

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][2]

Knoellia
Scientific classification
Domain:
Bacteria
Phylum:
Actinobacteria
Class:
Actinomycetales
Family:
Intrasporangiaceae
Genus:
Knoellia

Groth et al. 2002
Species

K. aerolata
K. flava
K. locipacati
K. remsis
K. sinensis
K. subterranea

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.[1] Other members of this genus have been initially isolated from soil, air, and pig manure.[3][4] K. remsis was originally classified in the genus Tetrasphaera, but was reclassified into Knoellia in 2018.[5][6]

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.[2][4] K. remsis is the only species capable of growth above 42 °C.[5]

References
  1. Groth, Ingrid; Schumann, Peter; Schütze, Barbara; Augsten, Kurt; Stackebrandt, Erko (2002). "Knoellia sinensis gen. nov., sp. nov. And Knoellia subterranea sp. nov., two novel actinobacteria isolated from a cave". International Journal of Systematic and Evolutionary Microbiology. 52 (Pt 1): 77–84. doi:10.1099/00207713-52-1-77. PMID 11837319.
  2. Groth, Ingrid (2015). "Knoellia". Bergey's Manual of Systematics of Archaea and Bacteria. pp. 1–11. doi:10.1002/9781118960608.gbm00079. ISBN 9781118960608.
  3. Shin, N.-R.; Roh, S. W.; Kim, M.-S.; Jung, M.-J.; Whon, T. W.; Bae, J.-W. (18 March 2011). "Knoellia locipacati sp. nov., from soil of the Demilitarized Zone in South Korea". International Journal of Systematic and Evolutionary Microbiology. 62 (2): 342–346. doi:10.1099/ijs.0.031880-0. PMID 21421930.
  4. Yu, X.; Du, Y.; Wang, G. (25 March 2011). "Knoellia flava sp. nov., isolated from pig manure". International Journal of Systematic and Evolutionary Microbiology. 62 (2): 384–389. doi:10.1099/ijs.0.030932-0. PMID 21441369.
  5. Osman, Shariff; Moissl, Christine; Hosoya, Naofumi; Briegel, Ariane; Mayilraj, Shanmugam; Satomi, Masataka; Venkateswaran, Kasthuri (1 December 2007). "Tetrasphaera remsis sp. nov., isolated from the Regenerative Enclosed Life Support Module Simulator (REMS) air system". International Journal of Systematic and Evolutionary Microbiology. 57 (12): 2749–2753. doi:10.1099/ijs.0.65137-0. PMID 18048719.
  6. 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 (22 August 2018). "Genome-Based Taxonomic Classification of the Phylum Actinobacteria". Frontiers in Microbiology. 9: 2007. doi:10.3389/fmicb.2018.02007. PMC 6113628. PMID 30186281.
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