Seed Priming with Salicylic Acid Minimizes Oxidative Effects of Aluminum on Trifolium Seedlings
| Autor: | Gabriele Espinel Ávila, Sidnei Deuner, Gabriel Streck Bortolin, Sheila Bigolin Teixeira, Carlos Eduardo da Silva Pedroso, Romário de Mesquita Pinheiro, Filipe Selau Carlos |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
biology Perennial plant Chemistry food and beverages Soil Science 04 agricultural and veterinary sciences Plant Science biology.organism_classification APX 01 natural sciences Repens Horticulture chemistry.chemical_compound Seedling Germination Shoot 040103 agronomy & agriculture Trifolium repens 0401 agriculture forestry and fisheries Agronomy and Crop Science Salicylic acid 010606 plant biology & botany |
| Zdroj: | Journal of Soil Science and Plant Nutrition. 20:2502-2511 |
| ISSN: | 0718-9516 0718-9508 |
| DOI: | 10.1007/s42729-020-00316-9 |
| Popis: | Aluminum (Al) toxicity is one of the main aspects restricting the development of fabaceous plants grown in soils with spontaneous vegetation prevalence in temperate climate zones. Salicylic acid (SA) minimizes the effects of stress on plants. Therefore, the aim of the current study was to evaluate the ability of SA seed priming to mitigate the effects of Al on seed germination and seedling performance in two Trifolium species. Trifolium vesiculosum (annual) and Trifolium repens (perennial) seeds were primed in solution added, or not, with SA (25 μM) and placed on germination paper moistened with aluminum sulfate (Al2(SO4)3) solutions at three different doses: 0 mM (control), 0.25 mM (moderate dose), and 1.25 mM (high dose). Seed priming with SA has mitigated the global toxicity effects of Al on T. vesiculosum and T. repens seedlings. Inferior damages were observed in T. vesiculosum root length and dry mass and in T. repens shoot dry mass, after SA pretreatment. T. vesiculosum seed priming with SA in the presence of Al has significantly reduced the osmotic potential of seedling sap. Salicylic acid (SA) has also enabled increased antioxidant activity of enzymes such as superoxide dismutase (SOD) in the two investigated plant species and ascorbate peroxidase (APX) in T. repens. In addition to the increased antioxidant activity, SA-primed seeds reduced the malondialdehyde content in T. vesiculosum seedlings exposed to Al. Overall, seed priming with SA mitigates oxidative effects of Al and improves T. vesiculosum and T. repens seedling performance in the presence of this element. |
| Databáze: | OpenAIRE |
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