Abstract
Ac.ti.no.co.ral'li.a Gr. n. actis actinos a ray; L. n. corallium coral; N.L. fem. n. Actinocorallia ( sic ) intended to mean a microorganism (actinomycete) that forms sporophores resembling coral. Actinobacteria / Actinobacteria / Streptosporangiales / Thermomonosporaceae / Actinocorallia Aerobic, Gram‐stain‐positive, nonmotile actinomycete which forms branched non‐fragmenting vegetative hyphae. Spore chains are formed on the aerial mycelium . Spores are cylindrical or rod‐shaped. Spore surface smooth or warty . Substrate mycelium pale yellowish to brown. Mature aerial mycelium is pale yellow or pink. Chemo‐organotrophic. Temperature growth range is 7–42°C. Melanin pigments are not produced. Does not grow in the presence of 5% (w/v) NaCl. Cell wall contains meso ‐2,6‐diaminopimelic acid and N ‐acetylated muramic acid. Major phospholipids are diphosphatidylglycerol, phosphatidylethanolamine, and phosphatidylinositol . Predominant menaquinones are MK‐9(H 4 ), MK‐9(H 6 ), and MK‐9(H 8 ). Hexadecanoic, 14‐methylpentadecanoic, octadecanoic, and 19‐methyloctadecanoic acids are the predominant fatty acids. Mycolic acids are absent. DNA G + C content ( mol %): 66.2–73.0 ( T m , HPLC). Type species : Actinocorallia herbida Iinuma, Yokota, Hasegawa and Kanamuru 1994, 233 VP .
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