Physiological and antioxidant responses of the sabkha biotope halophyte Limonium delicatulum to seasonal changes in environmental conditions

Souid, Aymen; Bellani, Lorenza; Magné, Christian; Zorrig, Walid; Smaoui, Abderrazak; Abdelly, Chédly; Longo, Vincenzo; Hamed, Karim Ben

doi:10.1016/j.plaphy.2017.12.008

Cited by 34 publications

(45 citation statements)

References 57 publications

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“…Generally, excessive accumulation of Na + leads to a nutritional imbalance, usually associated with the restriction of nutrients (K + , Mg 2+ and Ca 2+ ) uptake. Such mechanism was previously demonstrated for several halophyte species: Limonium delicatulum (Souid et al 2018), Cakile. maritima (Debez et al 2004), Atriplex lentiformis and Crithmum maritimum (Ben Amor et al 2005).…”

Section: Discussionmentioning

confidence: 57%

Physiological and biochemical markers for screening salt tolerant quinoa genotypes at early seedling stage

Derbali

Goussi

Koyro

et al. 2020

Journal of Plant Interactions

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The present study was conducted to determine the predictive screening parameters of quinoa salt tolerance that can be applied at early development stages, based on physiological and biochemical approaches. Four quinoa varieties (Tumeko, Red Faro, Kcoito and UDEC-5) were cultivated using hydroponic system, and treated for 2 weeks with different NaCl concentrations (0, 100, 300 and 500 mM). Salt treatment induced a decrease of plant growth depending on NaCl concentrations, plant organs and varieties. Red Faro and UDEC-5 exhibited low level of Na + accumulation and high K/Na selectivity. UDEC-5 showed high stomatal conductance leading to high net photosynthesis, even at 500 mM NaCl. Red Faro and UDEC-5 exhibited low level of lipid peroxidation, high antioxidant activities and high proline accumulation, as an indicator of ROS defense and osmotic adjustment. This study suggested that these physiological and biochemical traits could be used as screening criteria for selecting salt tolerant genotype. ARTICLE HISTORY

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Section: Discussionmentioning

confidence: 57%

Physiological and biochemical markers for screening salt tolerant quinoa genotypes at early seedling stage

Derbali

Goussi

Koyro

et al. 2020

Journal of Plant Interactions

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“…These results are in agreement with previous studies on Limonium species. [19,21,23] A similar significant variability in antioxidant activity was observed in L. delicatulum in its salty natural habitat [21] and under controlled conditions [19] and in L. densiflorum [23] due to a genotype effect and to environmental factors, including salinity. These results were supported by several studies that showed that antioxidant activity varied significantly depending on the stage of development of the plant [15,23,31] and edaphic conditions such as salinity and drought.…”

Section: Discussionmentioning

confidence: 72%

“…It was well-known tolerance to salinity and drought as often positively correlated with an effective antioxidant system. [21,[25][26][27] The halophyte species studied in this work were native of stressful biotopes and have acquired adaptation strategies, particularly against oxidative stress, by high activity of antioxidant enzymes if compared to glycophytes plants. Thus, our results suggested that L. vulgare, native to Oued Rane, had a cell protection better than other species by the high SOD activity.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies indicated SOD as the most effective antioxidant system for tissue protection against oxidative stress. [21,28,29] In addition, the antioxidant activity of Limonium species was assessed ex vivo on human erythrocytes under oxidative condition. Erythrocytes represented a good model system for the antioxidants screening, since they had neither nucleus nor mitochondria, and they played a crucial role in the antioxidant and antiinflammatory protection of the body.…”

Section: Discussionmentioning

confidence: 99%

“…These results were supported by several studies that showed that antioxidant activity varied significantly depending on the stage of development of the plant [15,23,31] and edaphic conditions such as salinity and drought. [21,22]…”

Section: Discussionmentioning

confidence: 99%

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Phytochemical and Biological Activities in Limonium Species Collected in Different Biotopes of Tunisia

Souid

Bellani

Gabriele

et al. 2019

Chemistry & Biodiversity

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A particular interest is nowadays given to natural antioxidants occurring in foods which can reduce the risk of several diseases through their protective effect. The genus Limonium is widely distributed in different salt regions of Tunisia and known in traditional medicine for the presence of highly effective viral and bacterial replication inhibitors. Limonium leaves have possible beneficial effects on human health for their antioxidant activities and free radical scavenging abilities. To exploit the potential of plants from extreme environments as new sources of natural antioxidants, we studied the extracts from leaves of eight Limonium species growing in extreme environments in Tunisia. Antioxidant molecules (polyphenols, flavonoids, flavonols, ascorbate, tocopherols), in vitro (DPPH, ORAC) and ex vivo antioxidant potential on human erythrocytes, antioxidant enzymes activities (superoxide dismutase, peroxidases, glutathione reductase) were evaluated to identify the species with the best antioxidant capacity. The results showed variability among the species considered in function of the environmental conditions of their natural biotopes, as for the antioxidants measured. In particular, L. vulgare from Oued Rane biotope, characterized by dryness and high temperatures, was the species with the highest enzymatic activity and antioxidant capacity, making it interesting as possible edible halophyte plant or as food complement.

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Response to Salinity in Legume Species: An Insight on the Effects of Salt Stress during Seed Germination and Seedling Growth

Tlahig

Bellani

Karmous

et al. 2021

Chemistry & Biodiversity

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The process of soil salinization and the preponderance of saline water sources all over the world represent one of the most harmful abiotic stress to plant growth. This pointed to the importance of obtaining plants which are tolerant or resistant to salt, considering that projection of climate change for the coming years indicate an increase in temperature and rain scarcity. In the current study, the effect of NaCl was investigated on germinating seeds of Lathyrus sativus L., Vicia sativa L., Vigna radiata L. R.Wilczek and Vigna unguiculata L. Walp., by combining physiological, biochemical, biostatistical and ultrastructural analyses. Our results revealed that germination was not influenced by high NaCl concentrations, while seedling growth was affected even at low NaCl concentrations, probably due to an alteration in water uptake and in organic matter biosynthesis. Nevertheless, the synthesis of antioxidant enzymes, phenolic acids and flavonoids was registered in all species, which tended to cope with the increasing salt stress, allowing a response mechanism such as cytoplasm detoxification and cellular turgor maintenance. Besides, the ultrastructural analysis evidenced plasmolyzed cells close to cells with a normal ultrastructure with no appreciable differences among the species. This research deeply investigates the mechanism of salt‐stress response focusing on species never tested before for their possible tolerance to salinity.

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Physiological and antioxidant responses of the sabkha biotope halophyte Limonium delicatulum to seasonal changes in environmental conditions

Cited by 34 publications

References 57 publications

Physiological and biochemical markers for screening salt tolerant quinoa genotypes at early seedling stage

Physiological and biochemical markers for screening salt tolerant quinoa genotypes at early seedling stage

Phytochemical and Biological Activities in Limonium Species Collected in Different Biotopes of Tunisia

Response to Salinity in Legume Species: An Insight on the Effects of Salt Stress during Seed Germination and Seedling Growth

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