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A Proteomic Study of Clavibacter Michiganensis Subsp. Michiganensis Culture Supernatants

Department Biologie Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstr. 5, 91058 Erlangen, Germany
Lehrstuhl für Biochemie der Pflanzen, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany
Author to whom correspondence should be addressed.
Academic Editor: Jacek R. Wisniewski
Proteomes 2015, 3(4), 411-423;
Received: 14 August 2015 / Revised: 30 October 2015 / Accepted: 10 November 2015 / Published: 12 November 2015
(This article belongs to the Special Issue Microbial Proteomics)
PDF [1188 KB, uploaded 12 November 2015]


Clavibacter michiganensis, subsp. michiganensis is a Gram-positive plant pathogen infecting tomato (Solanum lycopersicum). Despite a considerable economic importance due to significant losses of infected plants and fruits, knowledge about virulence factors of C. michiganensis subsp. michiganensis and host-pathogen interactions on a molecular level are rather limited. In the study presented here, the proteome of culture supernatants from C. michiganensis subsp. michiganensis NCPPB382 was analyzed. In total, 1872 proteins were identified in M9 and 1766 proteins in xylem mimicking medium. Filtration of supernatants before protein precipitation reduced these to 1276 proteins in M9 and 976 proteins in the xylem mimicking medium culture filtrate. The results obtained indicate that C. michiganensis subsp. michiganensis reacts to a sucrose- and glucose-depleted medium similar to the xylem sap by utilizing amino acids and host cell polymers as well as their degradation products, mainly peptides, amino acids and various C5 and C6 sugars. Interestingly, the bacterium expresses the previously described virulence factors Pat-1 and CelA not exclusively after host cell contact in planta but already in M9 minimal and xylem mimicking medium. View Full-Text
Keywords: canker; Clavibacter; plant pathogen; secretome; wilt; xylem mimicking medium; xylem sap canker; Clavibacter; plant pathogen; secretome; wilt; xylem mimicking medium; xylem sap

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Hiery, E.; Poetsch, A.; Moosbauer, T.; Amin, B.; Hofmann, J.; Burkovski, A. A Proteomic Study of Clavibacter Michiganensis Subsp. Michiganensis Culture Supernatants. Proteomes 2015, 3, 411-423.

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