Effect of salinity stress on the antioxidant defence systems of two varieties of cowpea (Vigna unguiculata L.)
| Autor: | Hassan Wara Sanusi, Mukhtar Musa, Micheal Anyekema, Umar Faruk Magaji, Lailaba Abubakar Aminu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Antioxidant
biology Osmotic shock Chemistry medicine.medical_treatment Geography Planning and Development Management Monitoring Policy and Law Malondialdehyde Cowpea Salinity Stress Antioxidant Defence System Osmolytes Salinity Superoxide dismutase Horticulture chemistry.chemical_compound Osmolyte Catalase medicine biology.protein Proline |
| Zdroj: | Bio-Research; Vol. 19 No. 2 (2021); 1306-1316 |
| ISSN: | 2705-3822 1596-7409 |
| DOI: | 10.4314/br.v19i2.4 |
| Popis: | Osmotic stress, oxidative stress and oxidation of essential macromolecules are common consequences of salinity stress that limit plant growth and productivity. Plants are known to evolve several strategies such as upsurge of antioxidant defence systems (ADS) and accumulation of osmolytes, so as to thrive under such conditions. In the present study, the effect of salinity stress (using irrigation method) on ADS of two cultivars (IT-99 and IT-288) of cowpea was examined. Plant samples (roots, young leaves and matured leaves) were harvested on day 21 of treatment with saline solution (100 – 400 mM NaCl). Antioxidant markers and osmolytes levels were quantified and compared with the controls (0.0 mM NaCl). The activities of superoxide dismutase, catalase, peroxidase and ascorbate peroxidase significantly increased (p0.05) different in all the salinity levels investigated. The level of proline increased at moderate salinity levels in all samples and at high salinity in roots of IT-99 and mature leaves of IT-288. For IT-99, levels of glycinebetaine significantly increased (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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