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ActinopolysporaRANK: GenusTAXONOMY: Bacteria -> Terrabacteria group -> Actinobacteria -> Actinobacteria -> Actinopolysporales -> Actinopolysporaceae -> Actinopolyspora OVERVIEW: Aerobic, Gram-stain-positive, acid-fast, nonmotile actinomycetes that form an extensively branched substrate mycelium about 1 µm in diameter. Fragmentation of the substrate mycelium is occasionally observed near the colony center, but substrate hyphae are mostly non-fragmented. Sporophores containing 10 or more smooth-walled coccobacillary and coccoid spores are produced basipetally on aerial hyphae. Spores are not observed on the substrate mycelium. Chemoorganotrophic and halophilic; 10–20% (w/v) NaCl is required for optimal growth. Temperature growth range is 30–50°C. Whole-organism hydrolyzates contain meso-diaminopimelic acid (meso-A2pm), arabinose, and galactose. Muramic acid moieties are N-acetylated. Cells contain phosphatidylcholine as the diagnostic phospholipid and are rich in branched-chain fatty acids, notably C17:0 anteiso and C15:0 iso, but lack mycolic acids. The predominant menaquinones are MK-9(H4) and MK-9(H6). DNA G+C content (mol%): 64–68 (HPLC, Tm). Type species: Actinopolyspora halophila |