Comparative pathogenicity studies of the Xanthomonas vasicola species on maize, sugarcane and banana
Loading...
Date
2015
Journal Title
Journal ISSN
Volume Title
Publisher
African Journal of Plant Science
Abstract
Previous biochemical and molecular sequence analyses of Xanthomonas campestris pathovar
musacearum, the etiological agent of banana Xanthomonas wilt, suggest that it belongs within the
species Xanthomonas vasicola (X. vasicola pv. vasculorum and X. vasicola pathovar holcicola.
However, the X. vasicola pathovar names were considered invalid according to pathovar naming
standards and placed as one X. vasicola species; this was also not helped by the lack of sufficient
comparative pathogenicity studies. Hence the proposal to rename X. campestris pathovar musacearum
was no longer further supported. This study therefore carried out large scale comparative pathogenicity
trial studies on the X. vasicola strains and X. campestris pathovar musacearum on 112 plants for
banana and maize, and 84 plants for sugarcane, to establish or support the proper X. vasicola pathovar
designations. The study also included nine common plant pathogenic Xanthomonas pathovars and one
non-Xanthomonas strain. The six strains of X. campestris pathovar musacearum used in the study
caused disease in sugarcane and banana but not on maize. 2 and 4 strains of X. vasicola pathovar
vasculorum and X. vasicola pathovar holcicola, respectively were not only pathogenic on maize and
sugarcane but each also caused distinct symptoms on maize. X. vasicola pathovar vasculorum caused
deformation of the plant while X. vasicola pathovar holcicola caused stunted growth.
Description
Keywords
Pathogenicity, X. axonopodis pv. vasculorum, X.campestris pv. musacearum, X vasicola pv. holcicola, X. vasicola pv. vasculorum, Xanthomonas wilt of bananas
Citation
Karamura, G., Smith, J., Studholme, D., Kubiriba, J., & Karamura, E. (2015). Comparative pathogenicity studies of the Xanthomonas vasicola species on maize, sugarcane and banana. African Journal of Plant Science , 9 (9), 385-400. DOI: 10.5897/AJPS2015.1327