Xanthomonas campestris pv. campestris gum mutants: Effects on xanthan biosynthesis and plant virulence

Katzen F, Ferreiro DU, Oddo CG, Ielmini MV, Becker A, Pühler A, Ielpi L (1998)
J Bacteriol 180(7): 1607-1617.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Xanthan is an industrially important exopolysaccharide produced by the phytopathogenic, gram-negative bacterium Xanthomonas campestris pv. campestris. It is composed of polymerized pentasaccharide repeating units which are assembled by the sequential addition of glucose-1-phosphate, glucose, mannose, glucuronic acid, and mannose on a polyprenol phosphate carrier (L. Ielpi, R. O. Couso, and M. A. Dankert, J. Bacteriol. 175:2490-2500, 1993), A cluster of 12 genes in a region designated xpsI or gum has been suggested to encode proteins involved in the synthesis and polymerization of the lipid intermediate. However, no experimental evidence supporting this suggestion has been published, In this work, from the biochemical analysis of a defined set of X. campestris gum mutants, we report experimental data for assigning functions to the products of the gum genes, We also show that the first step in the assembly of the lipid-linked intermediate is severely affected by the combination of certain gum and non-gum mutations. In addition, we provide evidence that the C-terminal domain of the gumD gene product is sufficient for its glucosyl-1-phosphate transferase activity. Finally, we found that alterations in the later stages of xanthan biosynthesis reduce the aggressiveness of X. campestris against the plant.
Erscheinungsjahr
1998
Zeitschriftentitel
J Bacteriol
Band
180
Ausgabe
7
Seite(n)
1607-1617
ISSN
0021-9193
Page URI
https://pub.uni-bielefeld.de/record/1626161

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Katzen F, Ferreiro DU, Oddo CG, et al. Xanthomonas campestris pv. campestris gum mutants: Effects on xanthan biosynthesis and plant virulence. J Bacteriol. 1998;180(7):1607-1617.
Katzen, F., Ferreiro, D. U., Oddo, C. G., Ielmini, M. V., Becker, A., Pühler, A., & Ielpi, L. (1998). Xanthomonas campestris pv. campestris gum mutants: Effects on xanthan biosynthesis and plant virulence. J Bacteriol, 180(7), 1607-1617.
Katzen, F., Ferreiro, D. U., Oddo, C. G., Ielmini, M. V., Becker, A., Pühler, A., and Ielpi, L. (1998). Xanthomonas campestris pv. campestris gum mutants: Effects on xanthan biosynthesis and plant virulence. J Bacteriol 180, 1607-1617.
Katzen, F., et al., 1998. Xanthomonas campestris pv. campestris gum mutants: Effects on xanthan biosynthesis and plant virulence. J Bacteriol, 180(7), p 1607-1617.
F. Katzen, et al., “Xanthomonas campestris pv. campestris gum mutants: Effects on xanthan biosynthesis and plant virulence”, J Bacteriol, vol. 180, 1998, pp. 1607-1617.
Katzen, F., Ferreiro, D.U., Oddo, C.G., Ielmini, M.V., Becker, A., Pühler, A., Ielpi, L.: Xanthomonas campestris pv. campestris gum mutants: Effects on xanthan biosynthesis and plant virulence. J Bacteriol. 180, 1607-1617 (1998).
Katzen, F, Ferreiro, DU, Oddo, CG, Ielmini, MV, Becker, A, Pühler, Alfred, and Ielpi, L. “Xanthomonas campestris pv. campestris gum mutants: Effects on xanthan biosynthesis and plant virulence”. J Bacteriol 180.7 (1998): 1607-1617.

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