| Listeria marthii |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Listeriaceae, Genus Listeria, Listeria marthii Graves, Helsel, Steigerwalt,
Morey, Daneshvar, Roof, Orsi, Fortes, Milillo, den Bakker, Wiedmann, Swaminathan and Sauders, 2010.
Morey, Daneshvar, Roof, Orsi, Fortes, Milillo, den Bakker, Wiedmann, Swaminathan and Sauders, 2010.
Gram-positive short bacilli with rounded ends. Nonspore-forming. Motile at 25-30 ºC.
Grow well most commonly used bacteriological media. Form an umbrella-type growth
appearing 3-5 mm below the surface of a stabbed semisolid motility medium
incubated at 20-30 ºC, but not at 37 ºC. On clear, solid media colonies are 0.2-0.8 mm
in diameter, smooth, bluish grey, translucent and slightly raised with a fine surface
texture and entire margin after incubating for 24 h at 37 ºC. Colonies present a
characteristic blue-green iridescence typical of Listeria on clear medium when viewed
by oblique light. Nonhemolytic. Facultatively anaerobic. No growth on MacConkey
agar. Optimum growth temperature is 30-37 ºC (range 1-45 ºC in TSB).
appearing 3-5 mm below the surface of a stabbed semisolid motility medium
incubated at 20-30 ºC, but not at 37 ºC. On clear, solid media colonies are 0.2-0.8 mm
in diameter, smooth, bluish grey, translucent and slightly raised with a fine surface
texture and entire margin after incubating for 24 h at 37 ºC. Colonies present a
characteristic blue-green iridescence typical of Listeria on clear medium when viewed
by oblique light. Nonhemolytic. Facultatively anaerobic. No growth on MacConkey
agar. Optimum growth temperature is 30-37 ºC (range 1-45 ºC in TSB).
Isolated from soil, standing water and flowing water samples obtained from the natural environment in the Finger Lakes National
Forest, New York, USA. Does not survive in heating at 60 ºC for 30 minutes.
Forest, New York, USA. Does not survive in heating at 60 ºC for 30 minutes.
Has not been associated with human or animal disease at this time.
- Graves L.M., Helsel L.O., Steigerwalt A.G., Morey, Daneshvar, Roof, Orsi, Fortes, Milillo, den Bakker, Wiedmann, Swaminathan and
Sauders, 2010. Listeria marthii sp. nov., isolated from the natural environment, Finger Lakes National Forest. IJSEM 60, 1280-1288. - Den Bakker, H. C., Warchocki, S., Wright, E. M., Allred, A. F., Ahlstrom, C., Manuel, C. S., Stasiewicz, M. J., Burrell, A., Roof, S., Strawn,
L. K., Fortes, E., Nightingale, K. K., Kephart, D. and Wiedmann, M. 2014. Listeria floridensis sp. nov., Listeria aquatica sp. nov.,
Listeria cornellensis sp. nov., Listeria riparia sp. nov. and Listeria grandensis sp. nov., from agricultural and natural environments.
Int. J. Syst. Evol. Microbiol., 64, 1882-1889.
Positive results for catalase, esculin hydrolysis, H2S production, methyl-red, acid production from: glucose.
Negative results for citrate utilization, indole production, gelatin hydrolysis, nitrate reduction, oxidase, urea hydrolysis, acid production
from: mannitol, maltose, sucrose, glycogen, ribose, rhamnose, and D-xylose (API Biomerieux).
Negative results for citrate utilization, indole production, gelatin hydrolysis, nitrate reduction, oxidase, urea hydrolysis, acid production
from: mannitol, maltose, sucrose, glycogen, ribose, rhamnose, and D-xylose (API Biomerieux).
(c) Costin Stoica
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