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Amelioration of cadmium stress in gladiolus ( Gladiolus grandiflora L.) by application of potassium and silicon.
- Source :
-
Journal of Plant Nutrition . 2018, Vol. 41 Issue 4, p461-476. 16p. - Publication Year :
- 2018
-
Abstract
- Gladiolus corms were grown in media contaminated with cadmium (Cd) (50 mg kg−1) and supplemented with silicon (Si) and potassium (K). The role of Si and K for mitigation of Cd toxicity was evaluated. Cd-induced stress generated significantly increased level of oxidative stress markers including hydrogen peroxide (H2O2), and malondialdehyde (MDA) in gladiolus. The application of K and Si improved the production of protein and proline in the treated plants. Moreover, K and Si supplemented plants exhibited an improvement in the activity of antioxidant enzymes and a reduction in the level of MDA, H2O2and Cd uptake under Cd stress. Application of K and Si also enhanced the uptake of mineral nutrients including calcium (Ca), magnesium (Mg), manganese (Mn), sulfur (S) and K. The plants supplemented with K and Si exhibited a higher amount of total phenolics and flavonoids. The combined effect of Si and K was more pronounced regarding beneficial effects on gladiolus plants compared to individual effect of these elements under Cd stress. The current research reveals that Si and K may improve gladiolus growth by decreasing the oxidative stress and Cd uptake and by increasing the activity of antioxidant defense enzymes, the quantity of secondary metabolites and plant nutrition. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 01904167
- Volume :
- 41
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Journal of Plant Nutrition
- Publication Type :
- Academic Journal
- Accession number :
- 127587192
- Full Text :
- https://doi.org/10.1080/01904167.2017.1385808