hydrogen peroxide for blackspot resistance
Published in: Plant Physiology and Biochemistry, vol 48, page 167-175, (2010)
Authors: Emma W. Gachomo a, Simeon O. Kotchoni b,*
Authors affiliation: a Department of Biology and Microbiology, South Dakota State University, Brookings, SD 57007, USA
b Department of Agronomy, Purdue University, Lilly Hall, 915 West State Street, West Lafayette, IN 47907, USA
From body of full paper: "Reactive oxygen species (ROS) have been reported to control many different processes in plants [25,35]. It has been demonstrated that signalling events leading to the activation of defense systems in various plant species involve ROS [19,22]. We showed here that exogenous application of ROS (H2O2) increased resistance to black spot disease as confirmed by the reduction of yellowing and the inhibition of black spot progression on H2O2-treated leaves (Fig. 7). The use of H2O2 treatment in controlling black spot disease of roses has never been tested before. This work is the first report of using H2O2 in D. rosaee Rosa interaction and suggests that H2O2 treatment alone or probably in combination with fungicide active ingredients can be used/considered as a promising alternative in managing black spot disease of roses. It is thus possible to promote defense response of roses by exposing healthy plants to a moderate concentration of H2O2."
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