Mycobacterium gastri Wayne, 1966

Dataset
English Wikipedia - Species Pages: Rank
SPECIES

Classification

phylum
Actinomycetota: class
Actinomycetia: order
Mycobacteriales: family
Mycobacteriaceae: genus
Mycobacterium: species
Mycobacterium gastri

Abstract

Mycobacterium gastri is a species of the phylum Actinomycetota (Gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus Mycobacterium.

Description

Moderately long to long, Gram-positive, aerobic, nonmotile and acid-fast rods. Colony characteristics

Nonchromogenic, smooth to rough, white colonies on Löwenstein-Jensen medium and smooth or somewhat granular on Middlebrook 7H10 agar.

Physiology

Growth on Löwenstein-Jensen medium or on Middlebrook 7H10 agar at 37 °C, (temperature range 25 °C-40 °C), within 7 or more days. Does not grow in the presence of ethambutol or isoniazid.

Differential characteristics

Closely related to M. kansasii M. gastri and M. kansasii share an identical 16S rDNA sequence. Species differentiation is possible by differences in the ITS and hsp65 sequences. M. kansasii produces a photochromogenic yellow pigment. AccuProbes for M. kansasii are negative.

Pathogenesis

Casual resident of human stomachs, but not considered a cause of disease. Biosafety level 1

Type strain

First isolated from human gastric specimen. Also found in soil.

Strain ATCC 15754 = CCUG 20995 = CIP 104530 = DSM 43505 = JCM 12407.

Name

Homonyms: Mycobacterium gastri Wayne, 1966