1887

Abstract

A novel actinomycete, designated strain GIMN4.001, was isolated from the rhizosphere of tomato plants grown in Guangzhou, China. The strain produced greyish white aerial mycelia, lactic acid and a large quantity of double diamond-shaped crystals on potato dextrose agar and yeast extract-malt extract agar. The colour of the substrate mycelium was not sensitive to pH. Microscopic observations revealed that strain GIMN4.001 produced verticillate chains of cylindrical spores. Chemotaxonomic data confirmed that strain GIMN4.001 belonged to the genus Melanin pigments were not produced. No antibacterial activity was observed against , , or , but inhibitory activity was observed against . 16S rRNA gene sequence analysis revealed that strain GIMN4.001 was related most closely to

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2011-01-01
2019-12-12
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Scanning electron micrograph (Hitachi S-3000N) of cells of strain GIMN4.001 grown on potato dextrose agar at 28°C for 14 days. A large quantity of double diamond-shaped crystals are found. Bar, 30 µm.

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Scanning electron micrographs (Phillip FEI-XL30) of cells of strain GIMN4.001 grown on inorganic salts-starch agar (ISP 4) at 28°C for 14 days. Verticillate chains of cylindrical spores are found. Bar, 1 µm.

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