Rahnella

Brady, Carrie L.; Denman, Sandra

Abstract

Rahnella species are ubiquitous in the environment, regularly isolated from water, soil, and woody tree hosts as well as occasionally from human clinical samples. Cells are Gram stain negative, facultatively anaerobic, and motile rods. Species are psychrotolerant, able to grow at 4°C, and favor growth temperatures of 25–30°C. Carbon sources such as d-maltose, N-acetyl-d-glucosamine, α-d-glucose, and d-mannose are readily assimilated. Species form a monophyletic clade when phylogenetic analysis is based on multilocus sequence analysis (MLSA) or whole-genome sequences. The major fatty acids are C16:0 and C17:0 cyclo; the percentage of C18:1 ω7c, summed feature 2 (iso-C16:1 and/or C14:0 3-OH), and summed feature 3 (C16:1 ω7c and/or iso-C15:0 2-OH) is variable, with some species exhibiting these fatty acids in larger amounts.

DNA G + C content (mol%): 51.3–53.7 (genome analysis).

Type species: Rahnella aquatilis Izard et al. 1979, VL7.

• Online Publication Date: Mar 6, 2024
• Publication Date: Mar 6, 2024
• Deposit Date: Mar 22, 2024
• Publisher: John Wiley and Sons
• Book Title: Bergey’s Manual of Systematics of Archaea and Bacteria
• DOI: https://doi.org/10.1002/9781118960608.gbm01164.pub2
• Public URL: https://uwe-repository.worktribe.com/output/11837679