Caloranaerobacter

Abstract Ca.lor.an.ae.ro.bac'ter. L. n. calor heat; Gr. pref. an not; Gr. n. aer air; N.L. bacter masc. equiv. of Gr. neut. dim. n. bakterion small rod or staff; N.L. masc. n. Caloranaerobacter a thermophilic, anaerobic rod Motile rod‐shaped cells. Under optimal conditions are short rods, about 0.3–0.5 × 0.5–2 µm, found singly, in pairs, or in short chains (less than 5 cells). Gram‐stain‐negative. Thermophilic ; temperature range for growth 45–65 °C, optimum growth at 65 °C. Adapted to the pH and salinity of ocean waters . pH range 5.5–9.0, optimum pH 7.0. Salinity range 10–100 g sea salts per liter, optimum 30 g sea salts per liter. Anaerobic, chemoorganotrophic , able to ferment carbohydrates and proteinaceous substrates. Sulfur not required for growth. On the basis of 16S rRNA gene sequence analysis presented in the roadmap to Volume 3 (Figure 5), Caloranaerobacter is located in the family Clostridiaceae , order Clostridiales , class Clostridia , in the phylum Firmicutes ; formerly, it was classified in cluster XII of the Clostridium subphylum (Collins et al., 1 9 9 4). DNA G + C content ( mol %): 27 ( T m ). Type species : Caloranaerobacter azorensis Wery, Moricet, Cueff, Jean, Pignet, Lesongeur, Cambon‐Bonavita and Barbier 2 0 0 1, 1795 VP . Taxonomic and Nomenclature Notes According to the List of Prokaryotic names with Standing in Nomenclature (LPSN), the taxonomic status of the genus Caloranaerobacter is: correct name (last update, February 2025) * . LPSN classification: Bacteria / Bacillati / Bacillota / Clostridia / Eubacteriales / Clostridiaceae / Caloranaerobacter The genus Caloranaerobacter can also be recovered in the Genome Taxonomy Database (GTDB) as g__Caloranaerobacter (version v220) ** . GTDB classification: d__Bacteria / p__Bacillota_A / c__Clostridia / o__Tissierellales / f__Thermohalobacteraceae / g__Caloranaerobacter * Meier‐Kolthoff et al. ( 2022 ). Nucleic Acids Res , 50 , D801 – D807 ; DOI: 10.1093/nar/gkab902 ** Parks et al. ( 2022 ). Nucleic Acids Res , 50 , D785 – D794