Journal
JOURNAL OF PLANT PHYSIOLOGY
Volume 162, Issue 3, Pages 275-279Publisher
ELSEVIER GMBH
DOI: 10.1016/j.jplph.2004.07.010
Keywords
antioxidant enzymes; hydrogen peroxide; hypersensitive response; pathogen; Puccinia recondita f.sp tritici; wheat
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We studied the systemic effects after infection of susceptible and resistant (expressing HSR) wheat plants with leaf rust (Puccinia recondita f. sp. tritici) on the amount of hydrogen peroxide and activity of some ROS scavenging enzymes. Measurements were performed 7 and 21 days after inoculation. In susceptible cultivar (Sadovo 1), an inhibition of activity of catalase and GST was found. By contrast, in resistant cultivar (Kristal), the infection caused an activation of these enzymes. Moreover, it was established that cv. Kristal plants possess constitutive higher levels of hydrogen peroxide, as well as higher superoxide dismutase activity. (c) 2004 Elsevier GmbH. All rights reserved.
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