Knoellia

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Knoellia
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Domain: Bacteria
Phylum: Actinomycetota
Class: Actinomycetia
Order: Micrococcales
Family: Intrasporangiaceae
Genus: Knoellia
Groth et al. 2002 [1]
Type species
Knoellia sinensis
Groth et al. 2002
Species [2]

Knoellia is a genus of Gram positive, aerobic, non-endosporeforming bacteria. [1] Species in this genus are mesophilic and have cells that are irregular rods or coccoid. [3]

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. [4] [5] K. remsis was originally classified in the genus Tetrasphaera , but was reclassified into Knoellia in 2018. [6] [7]

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. [3] [5] K. remsis is the only species capable of growth above 42 °C. [6]

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Knoellia flava is a species of Gram positive, nonmotile, non-sporeforming bacteria. The bacteria are aerobic and mesophilic, and the cells can be irregular rods or coccoid. It was originally isolated from pig manure from Huazhong Agricultural University in Wuhan, China. The species name is derived from Latin flava (yellow), referring to the colony color of the species when grown on R2A agar.

Knoellia locipacati is a species of Gram positive, nonmotile, non-sporeforming bacteria. The bacteria are aerobic and mesophilic, and the cells can be irregular rods or coccoid. It was originally isolated from soil from the Korean Demilitarized Zone. The species name is derived from Latin locus and pacatus.

Knoellia remsis a species of Gram positive, nonmotile, non-sporeforming bacteria. The bacteria are aerobic and mesophilic, and the cells are coccoid that group in pairs, tetrads, or clusters. It was originally isolated from an air sample from the Regenerative Enclosed Life Support Module Simulator, which was a system designed to simulate life aboard the International Space Station. The species is named after REMS, the acronym for the Regenerative Enclosed Life Support Module Simulator. The species was originally classified as Tetrasphaera remsis in 2007, but was reclassified into the genus Knoellia in 2018.

Knoellia sinensis is a species of Gram positive, nonmotile, non-sporeforming bacteria. The bacteria are aerobic and mesophilic, and the cells can be irregular rods or coccoid. It was originally isolated from an air sample from cave soil from Reed Flute Cave in Guilin, China. K. sinensis was discovered along with K. subterranea. The species name is derived from Latin sinensis. K. sinensis is the type strain of the genus Knoellia.

Knoellia subterranea is a species of Gram positive, nonmotile, non-sporeforming bacteria. The bacteria are aerobic and mesophilic, and the cells can be irregular rods or coccoid. It was originally isolated from an air sample from cave soil from Reed Flute Cave in Guilin, China. K. sinensis was one of the first described species of Knoellia, being discovered along with the type strain K. sinensis. The species name refers to its subterranean isolation location

References

  1. 1 2 3 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. Euzéby JP, Parte AC. "Knoellia". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved May 25, 2022.
  3. 1 2 Groth, Ingrid (2015). "Knoellia". Bergey's Manual of Systematics of Archaea and Bacteria. pp. 1–11. doi:10.1002/9781118960608.gbm00079. ISBN   9781118960608.
  4. 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.
  5. 1 2 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.
  6. 1 2 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.
  7. 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.