Agromyces

Ag.ro.my'ces. Gr. n. agros field or soil; N.L. masc. n. myces (from Gr. masc. n. mukes ‐etis ) fungus; N.L. masc. n. Agromyces soil fungus. Actinobacteria / Actinobacteria / Micrococcales / Microbacteriaceae / Agromyces Young cultures produce thin ( mostly 0 . 2–0 . 6 μ m in diameter ) branched vegetative hyphae, short branching filaments or irregular rods that subsequently break up into diphtheroid, rod‐like to coccoid fragments . Scant aerial hyphae may occur on rare occasions. Nonmotile. Nonsporeforming. Gram‐stain‐positive type of cell wall. Non‐acid‐fast. Lysozyme sensitive. Colonies on nutrient agar medium are generally yellow or white , circular, 1–2 mm in diameter, opaque, often penetrating into the agar. Chemo‐organotrophs , having a respiratory type of metabolism. Aerobic to microaerophilic . Catalase and oxidase test reactions intensities vary among species. Most strains grow well on standard laboratory media at near neutral pH. Some species are nutritionally exacting. Use a wide range of organic compounds as sole sources of carbon for growth and energy. Mesophilic; optimal growth at ~24–30°C; growth range ~7–40°C. DNA G + C content ( mol %): 65–73. Type species : Agromyces ramosus Gledhill and Casida 1969a, 346 VP .