Enzymatic and non-enzymatic oxidants and antioxidants involved in defense mechanisms against root-knot, reniform and citrus nematodes in their hosts
Afifi, A., Al-Sayed, A., Mahfoud, N., Farahat, A. (2014). Enzymatic and non-enzymatic oxidants and antioxidants involved in defense mechanisms against root-knot, reniform and citrus nematodes in their hosts. EKB Journal Management System, 13(1), 172-188. doi: 10.21608/ejaj.2014.63693
A. Afifi; A. Al-Sayed; N. Mahfoud; A. Farahat. "Enzymatic and non-enzymatic oxidants and antioxidants involved in defense mechanisms against root-knot, reniform and citrus nematodes in their hosts". EKB Journal Management System, 13, 1, 2014, 172-188. doi: 10.21608/ejaj.2014.63693
Afifi, A., Al-Sayed, A., Mahfoud, N., Farahat, A. (2014). 'Enzymatic and non-enzymatic oxidants and antioxidants involved in defense mechanisms against root-knot, reniform and citrus nematodes in their hosts', EKB Journal Management System, 13(1), pp. 172-188. doi: 10.21608/ejaj.2014.63693
Afifi, A., Al-Sayed, A., Mahfoud, N., Farahat, A. Enzymatic and non-enzymatic oxidants and antioxidants involved in defense mechanisms against root-knot, reniform and citrus nematodes in their hosts. EKB Journal Management System, 2014; 13(1): 172-188. doi: 10.21608/ejaj.2014.63693

Enzymatic and non-enzymatic oxidants and antioxidants involved in defense mechanisms against root-knot, reniform and citrus nematodes in their hosts

Egyptian Journal of Agronematology
Article 12, Volume 13, Issue 1, July 2014, Page 172-188  XML PDF (291.17 K)
Document Type: Original Article
DOI: 10.21608/ejaj.2014.63693
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Authors
A. Afifi1; A. Al-Sayed2; N. Mahfoud2; A. Farahat2
1Deparment of Biochemistry, Faculty of Agriculture- Cairo University
2Department of Zoology and Agricultural Nematology, Faculty of Agriculture- Cairo University
Abstract
A comparison between the changes in oxidants and antioxidants (involved in
defense mechanisms in plants against pathogens) in cowpea, eggplant, jasmine,
papaya and sour orange in response to infection with Meloidogyne incognita,
Rotylenchulus reniformis and Tylenchulus semipenetrans was held. Different hosts
react the same way to nematode infection, whereas oxidants, lipid peroxidase
(MDA) and hydrogen peroxide (H2O2) were increased after nematode infection. Also
antioxidant substances, Glutathione (GSH) and ascorbic acid (AA) as well as
enzymes, superoxide dismutase (SOD), Catalase (CAT) ,ascorbate peroxidase
(APX) and glutathione-S-transferase (GST) were also increased. The rates of
increase differed according to nematode species, host plant and nematode initial
population.

Keywords
Oxidants; Antioxidant enzymes; Meloidogyne incognita; Rotylenculus reniformis; Tylenculus semipenetrans
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