Environmental Economic Design of Medium Class Housing Building Models
In: Journal of Asian scientific research, Band 10, Heft 2, S. 70-87
ISSN: 2223-1331
4 Ergebnisse
Sortierung:
In: Journal of Asian scientific research, Band 10, Heft 2, S. 70-87
ISSN: 2223-1331
In: Environmental science and pollution research: ESPR, Band 29, Heft 35, S. 52378-52398
ISSN: 1614-7499
Abstract
Increasing ultraviolet (UV) radiation is causing oxidative stress that accounts for growth and yield losses in the present era of climate change. Plant hormones are useful tools for minimizing UV-induced oxidative stress in plants, but their putative roles in protecting tomato development under UVC remain unknown. Therefore, we investigated the underlying mechanism of pre-and post-kinetin (Kn) treatments on tomato plants under UVC stress. The best dose of Kn was screened in the preliminary experiments, and this dose was tested in further experiments. UVC significantly decreases growth traits, photosynthetic pigments, protein content, and primary metabolites (proteins, carbohydrates, amino acids) but increases oxidative stress biomarkers (lipid peroxidation, lipoxygenase activity, superoxide anion, hydroxyl radical, and hydrogen peroxide) and proline content. Treatment of pre-and post-kinetin spraying to tomato plants decreases UVC-induced oxidative stress by restoring the primary and secondary metabolites' (phenolic compounds, flavonoids, and anthocyanins) status and upregulating the antioxidant defense systems (non-enzymatic antioxidants as ascorbate, reduced glutathione, α-tocopherol as well as enzymatic antioxidants as superoxide dismutase, catalase, ascorbate peroxidase, glutathione peroxidase, glutathione-S-transferase, and phenylalanine ammonia-lyase). Thus, the application of Kn in optimum doses and through different modes can be used to alleviate UVC-induced negative impacts in tomato plants.
Graphical abstract
In: Environmental science and pollution research: ESPR, Band 31, Heft 17, S. 25258-25272
ISSN: 1614-7499
In: Environmental science and pollution research: ESPR, Band 27, Heft 32, S. 39702-39716
ISSN: 1614-7499