Is the cell wall reinforcement a potential tool for the early screening of resistance in breeding programs?

KORGAN S.; WOLSKI E. A; CICCORE P; SUAREZ P; CAPEZIO S; HUARTE M. A.; ANDREU A. B

Carlos paz, Córdoba, Argentina

Congreso; XLIV REUNION ANUAL DE LA SOCIEDAD ARGENTINA DE INVESTIGACIONES EN BIOQUIMICA Y BIOLOGIA MOLECULAR (SAIB).; 2008

SOCIEDAD ARGENTINA DE INVESTIGACIONES EN BIOQUIMICA Y BIOLOGIA MOLECULAR (SAIB).

The defense response in Solanum tarijense clones through the induction of lignin, callose, phenolic compounds, as the activities involved in the cell wall strengthening, POX and PPO, as a potential tool to screen for horizontal resistance was studied. Leaf tissue from resistant clones responded to P. infestans infection though the deposition of lignin, callose and phenolic compounds. All these changes were preceded by the activation of the enzymes involved in the synthesis and polymerization of these compounds. However, for the susceptible clones slight increases were detected. These results suggest that the analysis of the compounds related with the cell wall strengthening could be a potential tool for early screening of horizontal resistance in breeding program.