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Antioxidative enzymes and the Russian wheat aphid ( Diuraphis noxia ) resistance response in wheat ( Triticum aestivum )
Author(s) -
Moloi M. J.,
Van Der Westhuizen A. J.
Publication year - 2008
Publication title -
plant biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 1435-8603
DOI - 10.1111/j.1438-8677.2008.00042.x
Subject(s) - russian wheat aphid , biology , superoxide dismutase , infestation , reactive oxygen species , glutathione reductase , peroxidase , botany , aphididae , aphid , enzyme , respiratory burst , glutathione peroxidase , horticulture , agronomy , pest analysis , biochemistry , homoptera
A crucial function of antioxidative enzymes is to remove excess reactive oxygen species (ROS), which can be toxic to plant cells. The effect of Russian wheat aphid (RWA), Diuraphis noxia (Mordvilko), infestation on the activities of antioxidative enzymes was investigated in the resistant (cv. Tugela DN ) and the near‐isogenic susceptible (cv. Tugela ) wheat ( Triticum aestivum L.). RWA infestation significantly induced the activity of superoxide dismutase, glutathione reductase and ascorbate peroxidase to higher levels in the resistant than in susceptible plants. These findings suggest the involvement of antioxidative enzymes in the RWA–wheat resistance response, which was accompanied by an early oxidative burst. The results are consistent with the role of ROS in the resistance response and the control of their levels to minimise toxic effects.