Changes in antioxidant metabolism of Vigna unguiculata (L.) Walp. by propiconazole under water deficit stress.
In the present study, a pot culture experiment was conducted to estimate the ameliorating effect of propiconazole (PCZ) on drought stress in cowpea (Vigna unguiculata (L.) Walp.) plants. From 30 days after sowing (DAS), the plants were subjected to 3, 6 and 9 days interval drought (DID) stress and drought stress with PCZ at 15 and 15 mg l(-1) PCZ alone and 1 day interval irrigation was kept as control. The plant samples were collected on 34 DAS (3 DID), 37 DAS (6 DID) and 40 DAS (9 DID). The plants were separated into root, stem and leaf for estimating the antioxidant contents and activities of antioxidant enzymes. Individual and combined drought stress and PCZ treatments increased ascorbic acid (AA), alpha-tocopherol (alpha-toc) contents, superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) and polyphenol oxidase (PPO) activities when compared to control. The PCZ treatment mitigated the adverse effects of drought stress by increasing the antioxidant potentials and thereby paved the way for overcoming drought stress in V. unguiculata plants.
Manivannan
P
P
Stress Physiology Lab, Department of Botany, Annamalai University, Annamalainagar 608002, Tamilnadu, India.
Abdul Jaleel
C
C
Kishorekumar
A
A
Sankar
B
B
Somasundaram
R
R
Sridharan
R
R
Panneerselvam
R
R
D000975:Antioxidants / Q000378:metabolism*; D060387:Ascorbate Peroxidases; D001205:Ascorbic Acid / Q000378:metabolism; D002374:Catalase / Q000378:metabolism; D004156:Catechol Oxidase / Q000378:metabolism; D004190:Disasters; D005659:Fungicides, Industrial / Q000494:pharmacology*; D018532:Pisum sativum / Q000201:enzymology / Q000378:metabolism*; D010544:Peroxidases / Q000378:metabolism; D018515:Plant Leaves / Q000201:enzymology / Q000378:metabolism; D018517:Plant Roots / Q000737:chemistry / Q000201:enzymology / Q000378:metabolism; D018547:Plant Stems / Q000201:enzymology / Q000378:metabolism; D013482:Superoxide Dismutase / Q000378:metabolism; D014230:Triazoles / Q000494:pharmacology*; D014867:Water / Q000378:metabolism / Q000502:physiology*; D024502:alpha-Tocopherol / Q000378:metabolism
D000975:Antioxidants; D005659:Fungicides, Industrial; D014230:Triazoles; D014867:Water; C045950:propiconazole; D004156:Catechol Oxidase; D010544:Peroxidases; D060387:Ascorbate Peroxidases; D002374:Catalase; D013482:Superoxide Dismutase; D024502:alpha-Tocopherol; D001205:Ascorbic Acid