sp. nov., with dark blue diffusible pigment Free

Abstract

An actinomycete, designated strain GIMN4.002, was isolated from a tomato rhizosphere soil sample in Guangzhou, China. The strain produces white aerial mycelium and dark blue diffusible pigment on Gause's synthetic agar, and microscopic observation revealed that it produces looped chains of spiny spores. Morphological and chemotaxonomic characteristics of the strain are typical of the genus Melanin was produced and antibacterial activity was detected against Gram-positive micro-organisms, such as , and . The 16S rRNA gene sequence of strain GIMN4.002 had highest similarity (99.4 %) to B91; however, DNA–DNA relatedness between strain GIMN4.002 and NBRC 13054 was only 32.17 %. Further, the morphological, physiological and biochemical characteristics of strain GIMN4.002 are distinct from and other species of the genus with which this strain has high 16S rRNA gene sequence similarity (98–99 %). On the basis of the physiological and molecular properties observed, it is proposed that strain GIMN4.002 represents a novel species of the genus , for which the name sp. nov. is proposed, with GIMN4.002 (=CCTCC M 208213 =NRRL B-24802) as the type strain.

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2011-03-01
2024-03-29
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