SciELO - Scientific Electronic Library Online

vol.30 issue6A risk infection simulation model for fusarium head blight of wheatGenetic mechanism of resistance to Xanthomonas axonopodis pv. malvacearum in three cotton cultivars author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Fitopatologia Brasileira

On-line version ISSN 1678-4677


BENTES, Jânia L. S.  and  MATSUOKA, Kiyoshi. Localization of hydrogen peroxide during defense response of tomato against Stemphylium solani. Fitopatol. bras. [online]. 2005, vol.30, n.6, pp.643-646. ISSN 1678-4677.

Two tomato (Lycopersicon esculentum) cultivars were studied due to their reaction with cerium perhydroxide, verifying H2O2 produced in tomato plants boyh resistant and susceptible to Stemphylium solani. There was an accumulation of cerium perhydroxide on the wall of mesophyll cells in contact with the pathogen hyphae. Different reactions were not found int the two tomato cultivars concerning H2O2 accumulation. Since cerium perhydroxide was detected on negative control as well, it is suggested that H2O2 may possibly not participate in the resistance of c.v. 'Motelle' to S. Solani, in terms of cell wall buttressing.

Keywords : resistance; cell wall; Lycopersicon esculentum; H2O2.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License