Author
Listed:
- Marco Brenes
(Institute for the Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain
Faculty of Biology, Instituto Tecnológico de Costa Rica, Avenida 14, calle 5, 30101 Cartago, Costa Rica)
- Jason Pérez
(Faculty of Biology, Instituto Tecnológico de Costa Rica, Avenida 14, calle 5, 30101 Cartago, Costa Rica)
- Sara González-Orenga
(Mediterranean Agroforestry Institute (IAM), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain)
- Andrea Solana
(Institute for the Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain)
- Monica Boscaiu
(Mediterranean Agroforestry Institute (IAM), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain)
- Jaime Prohens
(Institute for the Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain)
- Mariola Plazas
(Institute for the Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain)
- Ana Fita
(Institute for the Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain)
- Oscar Vicente
(Institute for the Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain)
Abstract
This study investigated the physiological and biochemical responses to salinity stress of Solanum melongena and its wild relative, Solanum torvum , commonly used as eggplant rootstock. Young plants of both species were watered during 25 days with NaCl aqueous solutions at the following four final concentrations: 0 (for the controls), 100, 200, and 300 mM. Plant growth parameters, photosynthetic pigments content, monovalent ion concentrations in roots and leaves, leaf levels of osmolytes (proline and total soluble sugars), oxidative stress markers (MDA and H 2 O 2 ), non-enzymatic antioxidants (total phenolic compounds and total flavonoids), and enzymatic antioxidant activities (superoxide dismutase, catalase, glutathione reductase) were determined after the stress treatments. Salt-induced growth reduction was more significant in S. melongena than in S. torvum , especially at high salt concentrations, indicating a (slightly) higher salt tolerance of the wild species. The mechanisms of tolerance of S. torvum were partly based on the active transport of toxic ions to the leaves at high external salinity and, presumably, a better capacity to store them in the vacuoles, as well as on the accumulation of proline to higher concentrations than in the cultivated eggplant. MDA and H 2 O 2 contents did not vary in response to the salt treatments in S. torvum. However, in S. melongena , MDA content increased by 78% when 300 mM NaCl was applied. No activation of antioxidant mechanisms, accumulation of antioxidant compounds, or increase in the specific activity of antioxidant enzymes in any of the studied species was induced by salinity. The relatively high salt tolerance of S. torvum supports its use as rootstock for eggplant cultivation in salinized soils and as a possible source of salt-tolerance genes for the genetic improvement of cultivated eggplant.
Suggested Citation
Marco Brenes & Jason Pérez & Sara González-Orenga & Andrea Solana & Monica Boscaiu & Jaime Prohens & Mariola Plazas & Ana Fita & Oscar Vicente, 2020.
"Comparative Studies on the Physiological and Biochemical Responses to Salt Stress of Eggplant ( Solanum melongena ) and Its Rootstock S. torvum,"
Agriculture, MDPI, vol. 10(8), pages 1-20, August.
Handle:
RePEc:gam:jagris:v:10:y:2020:i:8:p:328-:d:394267
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Citations
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Cited by:
- Li, Wenjia & Gao, Yanming & Tian, Yongqiang & Li, Jianshe, 2022.
"Double-root-grafting enhances irrigation water efficiency and reduces the adverse effects of saline water on tomato yields under alternate partial root-zone irrigation,"
Agricultural Water Management, Elsevier, vol. 264(C).
- Neus Ortega-Albero & Ana María Adalid-Martínez & Vicente Castell-Zeising & María Dolores Raigón & Adrián Rodríguez-Burruezo & Ana Fita, 2024.
"Internal Fruit Quality Is Maintained in Eggplant under Mild Long-Term Salt Treatment,"
Agriculture, MDPI, vol. 14(6), pages 1-12, May.
- Duli Zhao & Kai Zhu & Aliya Momotaz & Xinxin Gao, 2020.
"Sugarcane Plant Growth and Physiological Responses to Soil Salinity during Tillering and Stalk Elongation,"
Agriculture, MDPI, vol. 10(12), pages 1-13, December.
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