Belongs within: Actinobacteriota.Contains: Microbacteriaceae, Kineosporiaceae, Dermabacteraceae, Micrococcaceae, Brevibacterium, Bifidobacteriaceae, Actinomycetaceae, Demequina, Cellulomonas, Jonesiaceae, Promicromonosporaceae, Bogoriellaceae, Glycomycetaceae, Micromonosporaceae, Geodermatophilaceae, Pseudonocardiaceae, Corynebacteriales, Streptosporangiales, Catenulisporales, Streptomycetaceae, Priopionibacteriales. The Actinobacteria are a diverse clade of mostly terrestrial, Gram-positive bacteria united by molecular analysis. Members of the clade are morphologically diverse, varying from cocci to rod-shaped taxa to taxa forming complex mycelia… Continue reading Actinobacteria


Belongs within: Actinobacteria.Contains: Actinomycetospora, Pseudonocardia, Amycolatopsis, Prauserella, Actinokineospora, Saccharopolyspora, Actinopolyspora, Lentzea, Saccharothrix. The Pseudonocardiaceae are a morphologically diverse clade of actinobacteria, united by molecular data, that may or may not form an aerial mycelium. Characters (from Nouioui et al. 2018): Cell-wall hydrolysates containing DL-A2pm as diaminoacid and galactose or arabinose as whole-cell sugars. PE or… Continue reading Pseudonocardiaceae


Belongs within: Streptosporangiales. The Thermomonosporaceae are filamentous bacteria producing aerial mycelia differentiating into single or short chains of spores or into spore vesicles that release motile spores (Goodfellow et al. 2012). Characters (from Goodfellow et al. 2012): Aerobic, Gram-stain-positive, non-acid-alcohol-fast, chemoorganotrophic actinomycete. Stable, branched substrate mycelium carrying aerial mycelium. Aerial hyphae differentiating into single or… Continue reading Thermomonosporaceae


Belongs within: Streptosporangiaceae. Nonomuria is a genus of filamentous bacteria forming aerial mycelia with chains of spores that are hooked, spiral or straight (Zhang et al. 1998). Characters (from Zhang et al. 1998): Gram-positive, non-acid-fast, extensively branched substrate and aerial mycelium. Aerial mycelia bearing chains of spores that are hooked, spiral or straight. Spore surface… Continue reading Nonomuria


Belongs within: Streptomycetaceae. Streptomyces is a diverse genus of filamentous bacteria forming aerial mycelia. Cutting up the excess Published 15 November 2007 Just before I start, I’d like to point out that I have very little understanding of the world of biochemistry. Most of it goes so far above my head that it causes detours… Continue reading Streptomyces


Belongs within: Streptosporangiales. Nocardiopsis is a genus of filamentous bacteria forming aerial mycelia of long chains of smooth spores (Korn-Wendisch & Kutzner 1992). Characters (from Korn-Wendisch & Kutzner 1992): Aerial mycelium with long chains of spores; spore surface smooth. Meso-diaminopimelic acid present; no diagnostic sugars; phospholipid type phosphatidylcholine; mycolic acids absent; menaquinones 10(H2)/(H4)/(H6); G+C content… Continue reading Nocardiopsis


Belongs within: Actinobacteria.Contains: Arthrobacter. The Micrococcaceae are a clade of Gram-positive, aerobic to facultatively anaerobic cocci. <==MicrococcaceaeGH01a |–Stomatococcus mucilaginosusPHK96, D92 `–+–+–NesterenkoniaNC18 | | |–N. alba Luo et al. 2009NC18 | | |–N. halobiaRP03 | | `–N. massiliensisNC18 | `–+–*Yaniella halotolerans (Li et al. 2004) Li et al. 2008NC18 | `–MicrococcusNC18 | | i. s.: M.… Continue reading Micrococcaceae


Belongs within: Actinobacteria. The Promicromonosporaceae are aerobic to facultatively anaerobic bacteria that typically form a substrate mycelium (Nouioui et al. 2018). Characters (from Nouioui et al. 2018): Aerobic to facultatively anaerobic, Gram-stain positive, acid-fast-negative, forming substrate mycelium that fragments into irregular elements or presents as cocci or short rods. Peptidoglycan of A4α type. Whole-cell hydrolysates… Continue reading Promicromonosporaceae


Belongs within: Corynebacteriales. Mycobacterium is a genus of aerobic to mesophilic bacteria producing high concentrations of mycolic acids. Life in mycolates Published 16 January 2008 Among the best-known genera of bacteria is unquestionably Mycobacterium. The most famous members of this genus, of course, are the human pathogens Mycobacterium tuberculosis (the cause of, well, tuberculosis) and… Continue reading Mycobacterium


Belongs within: Actinobacteria.Contains: Nocardioidaceae, Propionibacteriaceae. The Propionibacteriales are a clade of bacteria with cellular fatty acids composed of different combinations of straight-chain saturated and iso– and anteiso-methyl branched acids, and lacking mycolic acids (Nouioui et al. 2018). <==Propionibacteriales [Propionibacterineae] |–ActinopolymorphaceaeNC18 | |–TenggerimycesNC18 | | |–T. flavusNC18 | | `–T. mesophilusNC18 | `–+–Flindersiella endophyticaNC18 | `–+–Thermasporomyces… Continue reading Propionibacteriales