Bacillus flexus explained

Bacillus flexus is an aerobic, Gram-variable, rod-shaped, endospore-forming, oxidase-positive bacterium. The endospores are ellipsoidal, located in central/paracentral, unswollen sporangia. In laboratory conditions, it produces opaque, creamish, raised-margin colonies at 30  when incubated for 24–72 hrs. on tryptic soy agar. This bacterial species may be isolated from feces (poultry) and soil.

Human pathogenicity has not been well described yet.^{[1] [2]}

This species has been recently proposed to be transferred into the genus Priestia.^[3] The correct nomenclature would then be Priestia flexa.

Notes and References

1. Zhao. Jian. Lan. Xiaojun. Su. Jun. Sun. Lei. Rahman. Erkin. June 2008. Isolation and identification of an alkaliphilic Bacillus flexus XJU-3 and analysis of its alkaline amylase. Wei Sheng Wu Xue Bao = Acta Microbiologica Sinica. 48. 6. 750–756. 0001-6209. 18720839.
2. 2017-02-01. Bacillus flexus strain As-12, a new arsenic transformer bacterium isolated from contaminated water resources. Chemosphere. en. 169. 636–641. 10.1016/j.chemosphere.2016.11.129. 27912188. 0045-6535. Jebeli. Mohammad Ahmadi. Maleki. Afshin. Amoozegar. Mohammad Ali. Kalantar. Enayatollah. Izanloo. Hassan. Gharibi. Fardin.
3. Gupta. Radhey S.. Patel. Sudip. Saini. Navneet. Chen. Shu. 2020-11-01. Robust demarcation of 17 distinct Bacillus species clades, proposed as novel Bacillaceae genera, by phylogenomics and comparative genomic analyses: description of Robertmurraya kyonggiensis sp. nov. and proposal for an emended genus Bacillus limiting it only to the members of the subtilis and cereus clades of species. International Journal of Systematic and Evolutionary Microbiology. 70. 11. 5753–5798. 10.1099/ijsem.0.004475. 1466-5026. free.