Effect of Recurrent Salt and Drought Stress Treatments on the Endangered Halophyte <i>Limonium angustebracteatum</i> Erben
<i>Limonium angustebracteatum</i> is an endemic halophyte from the Spanish Mediterranean coastal salt marshes. To investigate this species’ ability to cope with recurrent drought and salt stress, one-year-old plants were subjected to two salt stress treatments (watering with 0.5 and 1 M...
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MDPI AG
2023-01-01
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| Online Access: | https://www.mdpi.com/2223-7747/12/1/191 |
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| author | Roberta Calone Diana-Maria Mircea Sara González-Orenga Monica Boscaiu Javier Zuzunaga-Rosas Lorenzo Barbanti Oscar Vicente |
| author_facet | Roberta Calone Diana-Maria Mircea Sara González-Orenga Monica Boscaiu Javier Zuzunaga-Rosas Lorenzo Barbanti Oscar Vicente |
| author_sort | Roberta Calone |
| collection | DOAJ |
| description | <i>Limonium angustebracteatum</i> is an endemic halophyte from the Spanish Mediterranean coastal salt marshes. To investigate this species’ ability to cope with recurrent drought and salt stress, one-year-old plants were subjected to two salt stress treatments (watering with 0.5 and 1 M NaCl solutions), one water stress treatment (complete irrigation withholding), or watered with non-saline water for the control, across three phases: first stress (30 days), recovery from both stresses (15 days), and second stress (15 days). Growth and biochemical parameters were determined after each period. The plants showed high salt tolerance but were sensitive to water deficit, as shown by the decrease in leaf fresh weight and water content, root water content, and photosynthetic pigments levels in response to the first water stress; then, they were restored to the respective control values upon recovery. Salt tolerance was partly based on the accumulation of Na<sup>+</sup>, Cl<sup>−</sup> and Ca<sup>2+</sup> in the roots and predominantly in the leaves; ion levels also decreased to control values during recovery. Organic osmolytes (proline and total soluble sugars), oxidative stress markers (malondialdehyde and H<sub>2</sub>O<sub>2</sub>), and antioxidant compounds (total phenolic compounds and flavonoids) increased by various degrees under the first salt and water stress treatments, and declined after recovery. The analysed variables increased again, but generally to a lesser extent, during the second stress phase, suggesting the occurrence of stress acclimation acquired by the activation of defence mechanisms during the first stress period. |
| first_indexed | 2024-03-09T03:27:31Z |
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| language | English |
| last_indexed | 2024-03-09T03:27:31Z |
| publishDate | 2023-01-01 |
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| spelling | doaj.art-9163a9233a0a4ed49f6907c440ed1eec2023-12-03T15:00:47ZengMDPI AGPlants2223-77472023-01-0112119110.3390/plants12010191Effect of Recurrent Salt and Drought Stress Treatments on the Endangered Halophyte <i>Limonium angustebracteatum</i> ErbenRoberta Calone0Diana-Maria Mircea1Sara González-Orenga2Monica Boscaiu3Javier Zuzunaga-Rosas4Lorenzo Barbanti5Oscar Vicente6CREA—Council for Agricultural Research and Economics, Research Centre for Agriculture and Environment, I-40128 Bologna, I-00184 Rome, ItalyInstitute for Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, SpainInstitute for Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, SpainMediterranean Agroforestry Institute (IAM), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, SpainInstitute for Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, SpainDepartment of Agricultural and Food Sciences, Alma Mater Studiorum, University of Bologna, Viale Fanin 44, 40127 Bologna, ItalyInstitute for Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain<i>Limonium angustebracteatum</i> is an endemic halophyte from the Spanish Mediterranean coastal salt marshes. To investigate this species’ ability to cope with recurrent drought and salt stress, one-year-old plants were subjected to two salt stress treatments (watering with 0.5 and 1 M NaCl solutions), one water stress treatment (complete irrigation withholding), or watered with non-saline water for the control, across three phases: first stress (30 days), recovery from both stresses (15 days), and second stress (15 days). Growth and biochemical parameters were determined after each period. The plants showed high salt tolerance but were sensitive to water deficit, as shown by the decrease in leaf fresh weight and water content, root water content, and photosynthetic pigments levels in response to the first water stress; then, they were restored to the respective control values upon recovery. Salt tolerance was partly based on the accumulation of Na<sup>+</sup>, Cl<sup>−</sup> and Ca<sup>2+</sup> in the roots and predominantly in the leaves; ion levels also decreased to control values during recovery. Organic osmolytes (proline and total soluble sugars), oxidative stress markers (malondialdehyde and H<sub>2</sub>O<sub>2</sub>), and antioxidant compounds (total phenolic compounds and flavonoids) increased by various degrees under the first salt and water stress treatments, and declined after recovery. The analysed variables increased again, but generally to a lesser extent, during the second stress phase, suggesting the occurrence of stress acclimation acquired by the activation of defence mechanisms during the first stress period.https://www.mdpi.com/2223-7747/12/1/191recretohalophytessalt stressdrought stressstress recoverystress memoryosmolytes |
| spellingShingle | Roberta Calone Diana-Maria Mircea Sara González-Orenga Monica Boscaiu Javier Zuzunaga-Rosas Lorenzo Barbanti Oscar Vicente Effect of Recurrent Salt and Drought Stress Treatments on the Endangered Halophyte <i>Limonium angustebracteatum</i> Erben Plants recretohalophytes salt stress drought stress stress recovery stress memory osmolytes |
| title | Effect of Recurrent Salt and Drought Stress Treatments on the Endangered Halophyte <i>Limonium angustebracteatum</i> Erben |
| title_full | Effect of Recurrent Salt and Drought Stress Treatments on the Endangered Halophyte <i>Limonium angustebracteatum</i> Erben |
| title_fullStr | Effect of Recurrent Salt and Drought Stress Treatments on the Endangered Halophyte <i>Limonium angustebracteatum</i> Erben |
| title_full_unstemmed | Effect of Recurrent Salt and Drought Stress Treatments on the Endangered Halophyte <i>Limonium angustebracteatum</i> Erben |
| title_short | Effect of Recurrent Salt and Drought Stress Treatments on the Endangered Halophyte <i>Limonium angustebracteatum</i> Erben |
| title_sort | effect of recurrent salt and drought stress treatments on the endangered halophyte i limonium angustebracteatum i erben |
| topic | recretohalophytes salt stress drought stress stress recovery stress memory osmolytes |
| url | https://www.mdpi.com/2223-7747/12/1/191 |
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