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- Title
EARLY OXIDATIVE STRESS RESPONSES IN COCONUT (Cocos nucifera) STEM OF MATAG AND PANDAN CULTIVARS DUE TO RED PALM WEEVIL (Rhynchophorus ferrugineus OLIVIER) INFESTATION.
- Authors
YUSUF, NORHAYATI; NASSIR, NUR NASSIHAH MOHD; AZMI, WAHIZATUL AFZAN; ZAKERI, HAZLINA AHAMED
- Abstract
Red palm weevil (Rhynchophorus ferrugineus Olivier, RPW) is one of the widely distributed harmful pests that attacks coconut palms in Malaysia. The infestations spread rapidly after the first case reported and cause severe damages to thousands of coconut trees. Thus, the problem affects the coconut production. This study was conducted to evaluate the early oxidative stress responses in coconut-RPW infestation. Fourteen-month-old seedlings of MATAG and PANDAN cultivars were infested with RPW for 28 days. The lipid peroxidation (malondialdehyde equivalents, MDA), hydrogen peroxide (H2O2) concentration and percentage of ion leakage in lower and upper stems of planted coconut cultivars were measured at 0, 7, 14, 21 and 28 days after infestation. Results showed that the MDA and H2O2 concentration were decreased at both lower and upper stem of PANDAN, but decreased at lower stem for MATAG. In contrast, at later stages of experiment, infested upper MATAG stem demonstrated significantly higher (p < 0.05) amount of MDA together with the percentage of ion leakage at lower and upper infested MATAG stems compared to the control. On the other hand, ion leakage at lower and upper parts of PANDAN stems did not significantly differ between controls and infested plants throughout the experiment. Red weevil palm infestation has changed the MDA level, H2O2 production and percentage of ion leakage in both MATAG and PANDAN cultivars. This information may be used as biomarkers for identification infested of MATAG and PANDAN cultivars in the future.
- Subjects
OXIDATIVE stress; COCONUT; RHYNCHOPHORUS
- Publication
Malaysian Applied Biology, 2017, Vol 46, Issue 4, p199
- ISSN
0126-8643
- Publication type
Article