Hydrogen peroxide-scavenging enzymes and antioxidants in Echinochloa frumentacea as affected by triazole growth regulators Academic Article

abstract

• Paclobutrazol (PBZ)- and uniconazole (UCZ)-treated plants of Echinochloa frumentacea were shorter but had much wider leaves than untreated controls 10 days after treatment. Leaves of treated plants had a slightly higher concentration of soluble protein than the controls and exhibited enhanced activities of ascorbate peroxidase, monodehydroascorbate (MDHA) reductase, and glutathione (GSH) reductase. The triazoles did not influence the activity of dehydroascorbate (DHA) reductase. The leaves of treated plants had increased concentrations of water-soluble sulfhydryls and ascorbic acid. In contrast, the concentration of malondialdehyde (MDA), a by-product of lipid peroxidation, was lower in the leaves of treated plants than in controls. These results suggest that triazole growth regulators increased the activity of the endogenous H2O2-scavenging system in E. frumentacea. © 1992 Kluwer Academic Publishers.

authors

• Davis, Tim

published proceedings

• Plant Growth Regulation

author list (cited authors)

• Sankhla, N., Upadhyaya, A., Davis, T. D., & Sankhla, D

citation count

• 17

complete list of authors

• Sankhla, N||Upadhyaya, A||Davis, Tim D||Sankhla, D

publication date

• November 1992

publisher

• Springer Science and Business Media LLC  Publisher

published in

• Plant Growth Regulation  Journal

keywords

• Ascorbate Peroxidase
• Dehydroascorbate Reductase
• Glutathione Reductase
• Malondialdehyde
• Monodehydroascorbate Reductase
• Paclobutrazol
• Uniconazole

Digital Object Identifier (DOI)

• 10.1007/bf00130654

start page

• 441

end page

• 443

volume

• 11

issue

• 4