Myroides Vancanneyt et al. 1996
General information
Description and emendation
Cells are gram-negative rods that are 0.5 µm in diameter and 1 to 2 µm long, but longer rods and long chains (containing 4 to 10 cells) may occur in broth medium. Cells lack flagella. Neither cellular gliding movement nor swarming growth is observed. Various colony types may occur, but most colonies are yellow pigmented. A characteristic fruity odor is produced by most strains. Strictly aerobic with good growth on nutrient agar and MacConkey agar. Nonhemolytic on blood agar. Growth occurs at room temperature (18 to 22°C) and at 37°C, but not at 5 and 42°C. Oxidase, catalase, urease, and gelatinase positive. Indole is not formed. Nitrite is characteristically reduced, but nitrate is not reduced. None of the strains exhibit arginine dihydrolase or β-galactosidase activity or hydrolyze esculin, and all strains are nonsaccharolytic. As determined by API ZYM galleries, all strains hydrolyze 2-naphthyl-phosphate, 2-naphthyl-butyrate, 2-naphthyl-caprylate, L-leucyl-2-naphthylamide and naphthol-AS-BI-phosphate. No strain hydrolyzes N-benzoyl-DL-arginine-2-naphthylamide, 6-Br-2-naphthyl-α-D-galactopyranoside 2-phthyl-β-D-galactopyranoside, naphthol-AS-BI-β-D-glucuronide, 2-naphthyl-α- D-glucopyranoside, 6-Br-2-naphthyl-β-D-glucopyranoside, 1-naphthyl-N-acetyl-β-D-glucosaminide 6-Br-2-naphthyl-α-D-mannopyranoside, and 2-naphthyl-α-L-fucopyranoside. Very weak or no hydrolysis occurs with the substrates 2-naphthylmyristate, L-valyl-2-naphthylamide, L-cystyl-2-naphthylamide, and N-glutaryl-phenylalanine-2-naphthylamide. The closest phylogenetic neighbor as determined by DNA-rRNA hybridization is the emended genus Flavobacterium. As in the genus Flavobacterium, menaquinone 6 is the major isoprenoid quinone, and homospermidine is the dominant polyamine component. The dominant fatty acids are 15:0 iso, 15:0 iso 3-OH, 16:0 3-OH, 17:0 iso 3-OH, and 17:1 iso ω9c. Strains are isolated from human clinical specimens or hospital environments. The G+C contents range from 30 to 38 mol%.
1: Cells are strictly aerobic, Gram-staining-negative rods that may form chains of 4-10 cells in broth culture. Spores are not formed. Cells lack flagella and flagellar motility. Some species display gliding motility. A characteristic fruity odour is produced by most strains. Non-haemolytic on blood agar. All strains grow at 18-22°C and at 37°C, and some strains grow at 6 and 42°C. Oxidase-positive and catalase-positive. Most species reduce nitrite, but do not reduce nitrate. Some strains produce flexirubin-type and diffusible pigments on LB agar. Menaquinone 6 is the major isoprenoid quinone. The dominant fatty acids are C15:0 iso and C17:0 iso 3-OH. The DNA G+C content ranges from 33 to 37 mol%.
Subdivision(s)
MID | Name | Rank | Taxon ID |
---|---|---|---|
M020504010495002 | Myroides guanonis | Species | 1150112 |
M020504010495003 | Myroides indicus | Species | 1323422 |
M020504010495004 | Myroides injenensis | Species | 1183151 |
M020504010495005 | Myroides marinus | Species | 703342 |
M020504010495006 | Myroides odoratimimus | Species | 76832 |
M020504010495001 | Myroides odoratus | Species | 256 |
M020504010495007 | Myroides pelagicus | Species | 270914 |
M020504010495008 | Myroides phaeus | Species | 702745 |
M020504010495009 | Myroides profundi | Species | 480520 |
M020504010495010 | Myroides xuanwuensis | Species | 1324934 |