Seed priming with calcium chloride improves the photosynthesis performance of faba bean plants subjected to cadmium stress
| Autor: | F. Zribi, K. Zribi, K. Jalali, Haythem Mhadhbi, I. Nouairi, F. Barhoumi |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Physiology chemistry.chemical_element macromolecular substances Plant Science Photosynthesis 01 natural sciences chemistry.chemical_compound lcsh:Botany Hydrogen peroxide Carotenoid chemistry.chemical_classification Reactive oxygen species Cadmium nonphotochemical quenching photosynthetic apparatus seed priming water-use efficiency food and beverages 04 agricultural and veterinary sciences lcsh:QK1-989 Vicia faba Horticulture chemistry Germination Chlorophyll 040103 agronomy & agriculture 0401 agriculture forestry and fisheries 010606 plant biology & botany |
| Zdroj: | Photosynthetica, Vol 57, Iss 2, Pp 438-445 (2019) |
| ISSN: | 1573-9058 0300-3604 |
| DOI: | 10.32615/ps.2019.055 |
| Popis: | Faba bean (Vicia faba L.) seeds were treated with H2O [nonprimed (NP)] or 2% CaCl2 [primed (P)] before germination for 6 h. After seven days, seedlings were exposed to 0 or 50 µM CdCl2 concentrations for three weeks. Under Cd treatment, P plants showed an improvement of gas-exchange characteristics, chlorophyll (Chl) and carotenoids contents as compared to NP plants subjected to Cd stress. Additionally, the values of Chl fluorescence were relatively similar to those of control, implying that no photodamage occurred. Moreover, under 50 µM Cd, the P plants exhibited lesser accumulation of hydrogen peroxide and superoxide radicals in leaves as compared to NP plants. Likewise, results showed that CaCl2-seed pretreatment alleviated adverse effects of Cd on electrolyte leakage. In conclusion, CaCl2 improved photosynthesis attributes of faba bean plants subjected to Cd stress by mitigating the adverse effects of Cd toxicity through a reduced generation of reactive oxygen species. |
| Databáze: | OpenAIRE |
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