INVESTIGADORES
VOJNOV Adrian Alberto
artículos
Título:
Xanthomonas vesicatoria virulence factors involved in early stages of bacterial spot development in tomato
Autor/es:
FELIPE, V.; ROMERO, A. M.; MONTECCHIA, M. S.; VOJNOV, A. A.; BIANCO, M. I.; YARYURA, P. M.
Revista:
PLANT PATHOLOGY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Año: 2018
ISSN:
0032-0862
Resumen:
Xanthomonas vesicatoria (Xv) is a member of a species complex that causes bacterial spot on tomato, one of the mostimportant diseases of this crop worldwide. The objective of this investigation was to analyse several characteristicsinvolved in Xv virulence in relation to strain aggressiveness. Motility, biofilm formation, adhesion and production ofxanthan were evaluated in three local strains causing tomato bacterial spot in Argentina. The strains assayed presenteddifferential swarming and twitching motilities, adhesion and biofilm formation abilities. The most aggressive strain,BNM 208, exhibited the greatest swarming and twitching motilities, and developed a mature biofilm with presence ofdefined cell clusters, a homogeneous and compact structure, and higher biomass and substratum coverage than theother two strains. Even though the three strains produced similar amounts of xanthan, BNM 208 produced the mostviscous exopolysaccharide, which possibly relates to the better characteristics of its biofilm. Despite other differences,the three strains multiplied to similar levels when they were infiltrated into the leaf. The results suggest that the aggressivenessof Xv strains studied in this work was related to their ability to move by flagella or type IV pili, adhere toleaves and form well developed biofilms, factors that improve phyllosphere colonization. A better understanding of thefactors involved in the Xv infection process at the early stages would contribute to developing new control strategiesfor this phytopathogen.