Mycolicibacterium cyprinidarum sp. nov., a rapidly growing species isolated from diseased koi carp, Cyprinus carpio

Author:

Matsumoto Megumi1,Chien Tang Belinda Chien1,Machida Yuichiro1,Matoyama Hisato2,Kishihara Tatsuya2,Sato Shoh2,Kawato Satoshi1,Hirono Ikuo1,Sano Motohiko1,Kato Goshi1

Affiliation:

1. Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan

2. Niigata Prefectural Inland Water Fisheries Experiment Station, 2650 Okawahara, Nagaoka, Niigata, 940-1137, Japan

Abstract

A rapidly growing nontuberculous mycobacterium was isolated from diseased koi carp in Niigata, Japan, which was identified as representing a novel Mycolicibacterium species through whole genome sequence analysis. The bacterial isolates (NGTWS0302, NGTWS1803T and NGTWSNA01) were found to belong to the genus Mycolicibacterium through phylogenetic analysis using whole genome sequences of mycobacteria species. The bacterial colony was smooth, moist and non-chromogenic on 1% Ogawa medium at 30 °C. In biochemical characteristic tests, the bacterial isolates showed positive reactions for catalase activity, Tween 80 hydrolysis and tellurite reduction. The isolates were sensitive to 2–4 µg ml−1 ampicillin, kanamycin and rifampicin. Based on these results, we propose a novel Mycolicibacterium species, Mycolicibacterium cyprinidarum sp. nov. The type strain is NGTWS1803T (=JCM 35117T=ATCC TSD-289T).

Publisher

Microbiology Society

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