Physiological and Biochemical Responses to Salt Stress in Cultivated Eggplant (Solanum melongena L.) and in S. insanum L., a Close Wild Relative
| Autor: | Monica Boscaiu, Jaime Prohens, Ana Fita, Oscar Vicente, Andrea Solana, Mariola Plazas, Ángeles Calatayud, Marco Brenes |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Melongena Ion homeostasis Glutathione reductase BOTANICA Wild relative Eggplant Photosynthesis 01 natural sciences lcsh:Agriculture 03 medical and health sciences BIOQUIMICA Y BIOLOGIA MOLECULAR Proline 030304 developmental biology 0303 health sciences biology Chemistry lcsh:S food and beverages Vegetative growth biology.organism_classification F60 Plant physiology and biochemistry Salinity Horticulture GENETICA Osmolytes Catalase Oxidative stress biology.protein Solanum Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Agronomy, Vol 10, Iss 651, p 651 (2020) electronico ReDivia. Repositorio Digital del Instituto Valenciano de Investigaciones Agrarias Universidad de Alicante (UA) ReDivia: Repositorio Digital del Instituto Valenciano de Investigaciones Agrarias Instituto Valenciano de Investigaciones Agrarias (IVIA) Agronomy Volume 10 Issue 5 RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| Popis: | Eggplant (Solanum melongena) has been described as moderately sensitive to salinity. We characterised the responses to salt stress of eggplant and S. insanum, its putative wild ancestor. Young plants of two accessions of both species were watered for 25 days with an irrigation solution containing NaCl at concentrations of 0 (control), 50, 100, 200, and 300 mM. Plant growth, photosynthetic activity, concentrations of photosynthetic pigments, K+, Na+, and Cl&minus ions, proline, total soluble sugars, malondialdehyde, total phenolics, and total flavonoids, as well as superoxide dismutase, catalase, and glutathione reductase specific activities, were quantified. Salt stress-induced reduction of growth was greater in S. melongena than in S. insanum. The photosynthetic activity decreased in both species, except for substomatal CO2 concentration (Ci) in S. insanum, although the photosynthetic pigments were not degraded in the presence of NaCl. The levels of Na+ and Cl&minus increased in roots and leaves with increasing NaCl doses, but leaf K+ concentrations were maintained, indicating a relative stress tolerance in the two accessions, which also did not seem to suffer a remarkable degree of salt-induced oxidative stress. Our results suggest that the higher salt tolerance of S. insanum mostly lies in its ability to accumulate higher concentrations of proline and, to a lesser extent, Na+ and Cl&minus The results obtained indicate that S. insanum is a good candidate for improving salt tolerance in eggplant through breeding and introgression programmes. |
| Databáze: | OpenAIRE |
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