Abstract
The effects of pretreatment of 0–5 mM salicylic acid (SA) on the sacha inchi (Plukenetia volubilis) seedlings during chilling stress were investigated. The stress induced damage to seedlings, and SA pretreatment decreased the level of damage. Lipid peroxidation, measured in terms of malondialdehyde content, increased significantly by stress, and SA pretreatment prevented the increase because SA decreased the production rate of superoxide anion (O 2 ·― ) and H2O2 content. SA pretreatment increased the activities of antioxidant enzymes including superoxide dismutase, catalase, guaiacol peroxidase, ascorbate peroxidase, and glutathione reductase and decreased activity of dehydroascorbate reductase. In addition, SA pretreatment increased the content of proline and soluble sugar. Results suggested that the pretreatment of sacha inchi seedlings with SA may induce antioxidant enzymes which lead to increased chilling tolerance. The best protection appeared to be obtained from seedlings that were sprayed with SA at 0.5 and 1 mM. Induction of chilling tolerance in seedlings by exogenous application of SA may have a significant practical application in sacha inchi plantation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
