The growth responses and antioxidant capabilities of melinjo (Gnetum gnemon L.) in different durations of drought stress
Autor: | Bella Rhea Lavifa Sanjaya, Laras Sekar Arum, Tri Agus Siswoyo, Zahela Siti Aisyah |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Drought stress
Antioxidant DPPH Radical scavenging medicine.medical_treatment Agriculture (General) Soil Science Plant Science 010501 environmental sciences Horticulture 01 natural sciences S1-972 Lipid peroxidation Superoxide dismutase chemistry.chemical_compound Nutraceutical medicine Gnetum gnemon Food science 0105 earth and related environmental sciences ABTS biology Chemistry fungi food and beverages 04 agricultural and veterinary sciences biology.organism_classification Seedling 040103 agronomy & agriculture biology.protein 0401 agriculture forestry and fisheries Animal Science and Zoology Melinjo Agronomy and Crop Science Food Science |
Zdroj: | Annals of Agricultural Sciences, Vol 66, Iss 1, Pp 81-86 (2021) |
ISSN: | 0570-1783 |
Popis: | Melinjo (Gnetum gnemon L.) is a beneficial agroforestry plant that contains antioxidant compounds broadly studied as a natural source in pharmaceutical and nutraceutical uses. The antioxidant compounds benefit human health and plant to develop defense mechanisms under environmental stresses, such as drought stress. This study aims to evaluate the defense mechanism of melinjo under drought stress. Polyethylene glycol (PEG) was used to simulate drought stress to melinjo seedlings for 5, 10, 20, and 40 days compared to zero-day control without PEG. The inhibition and detoxification activities of 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydroxyl, superoxide radical, and superoxide dismutase (SOD) were determined to evaluate antioxidant capabilities during drought stress. Lipid peroxidation and hydrogen peroxide (H2O2) contents were also analyzed to evaluate the level of cellular damage during drought stress. The seedling's growth was significantly reduced as a response to the longer duration of drought stress treatment. On the contrary, the level of lipid peroxidation and H2O2 were increased, followed by the escalation of antioxidant activities. This result indicates that many antioxidant compounds act together to develop a defense mechanism in melinjo seedlings, and the different duration of drought stresses influences their capabilities. |
Databáze: | OpenAIRE |
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