| Clavibacter michiganensis subsp. tessellarius |
Legend: + positive; - negative; V variable; nd not determined.
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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Micrococcinae, Family
Microbacteriaceae, Genus Clavibacter Davis, Gillaspsie Jr., Vidaver and Harris 1984, Clavibacter michiganensis subsp. tessellarius
corrig. (Carlson and Vidaver 1982) Davis, Gillaspsie Jr., Vidaver and Harris 1984, comb. nov.
Historical synonyms: Corynebacterium michiganense subsp. tessellarius Carlson and Vidaver 1982.
Microbacteriaceae, Genus Clavibacter Davis, Gillaspsie Jr., Vidaver and Harris 1984, Clavibacter michiganensis subsp. tessellarius
corrig. (Carlson and Vidaver 1982) Davis, Gillaspsie Jr., Vidaver and Harris 1984, comb. nov.
Historical synonyms: Corynebacterium michiganense subsp. tessellarius Carlson and Vidaver 1982.
Gram-positive pleomorphic rods, 0.5-1.5 µm. Non-motile. Non-sporulated. Mycolic acids are not present.
Colonies are convex, diameter 2 to 4 mm, glistening, and butyrous; produce an apricot
orange pigment. Grows on NBY medium, CNS medium and tetrazolium chloride
medium. Aerobe. Optimal growth at 24-28 ºC. Can grow at 10 ºC, but not at 37 ºC.
orange pigment. Grows on NBY medium, CNS medium and tetrazolium chloride
medium. Aerobe. Optimal growth at 24-28 ºC. Can grow at 10 ºC, but not at 37 ºC.
Isolated from plants.
Pathogenic, obligate parasite of various flowering plants. Host specificity: wheat (T. aestivum).
- Holt J.G., Krieg N.R., Sneath P.H.A., Staley J.T. and Williams S.T., 1994. Bergey's Manual of Determinative Bacteriology, Ninth
Edition, Williams & Wilkins, A Waverly Company, Baltimore, pp 571-596. - Davis M.J., Gillaspie Jr. A.G., Vidaver A.K. and Harris R.W., 1984. Clavibacter: a New Genus Containing Some Phytopathogenic
Coryneform Bacteria, Including Clavibacter xyli subsp. xyli sp. nov., subsp. nov. and Clavibacter xyli subsp. cynodontis subsp.
nov., Pathogens That Cause Ratoon Stunting Disease of Sugarcane and Bermudagrass Stunting Disease. IJSB Vol. 34, No. 2, p.
107-117. - Carlson R.R. and Vidaver A.K., 1982. Taxonomy of Corynebacterium Plant Pathogens, Including a New Pathogen of Wheat, Based
on Polyacrylamide Gel Electrophoresis of Cellular Proteins. IJSB Vol. 32, N0. 3, p. 315-326. - Gonzales A.J. and Trapiello E. 2014. Clavibacter michiganensis subsp. phaseoli subsp. nov., pathogenic in bean. Int. J. Syst. Evol.
Microbiol. 64, 1752-1755. - Yasuhara-Bell J. and Alvarez A.M., 2015. Seed-associated subspecies of the genus Clavibacter are clearly distinguishable from
Clavibacter michiganensis subsp. michiganensis. Int. J. Syst. Microbiol. 65, 811-826. - Cummins C.S., Lelliott R.A. and Rogosa M., 1975. Genus Corynebacterium Lehmann and Neumann 1896 . In: Buchanan R.E.
and Gibbons N.E. (Editors), Bergey’s Manual of Determinative Bacteriology, Eight Edition, The Williams & Wilkins Company,
Baltimore, 602-617. - Vidaver A.K. and Mandel M., 1974. Corynebacterium nebraskense, a New, Orange-Pigmented Phytopathogenic Species. Int. J.
Syst. Bacteriol. Vol. 24, No. 4, p. 482-485.
Not acid fast.
Positive results for catalase, citrate utilisation, esculin hydrolysis, starch hydrolysis,
Voges-Proskauer, acid production from mannitol.
Negative results for casein hydrolysis, gelatinase, lipase, methyl red, nitrate
reduction, tyrosine hydrolysis, urease, acid production from: inulin, melezitose,
rhamnose & ribose.
Variable results for acid production from sorbitol.
Positive results for catalase, citrate utilisation, esculin hydrolysis, starch hydrolysis,
Voges-Proskauer, acid production from mannitol.
Negative results for casein hydrolysis, gelatinase, lipase, methyl red, nitrate
reduction, tyrosine hydrolysis, urease, acid production from: inulin, melezitose,
rhamnose & ribose.
Variable results for acid production from sorbitol.
(c) Costin Stoica
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Differential characters of Corynebacterium michiganensis subspecies: