Salt tolerance evaluation of nine indigenous Greek olive cultivars

Assimakopoulou, Anna; Salmas, Ioannis; Roussos, Peter A.; Nifakos, Kallimachos; Kalogeropoulos, Panagiotis; Kostelenos, G.

doi:10.1080/01904167.2016.1264419

Cited by 12 publications

(9 citation statements)

References 44 publications

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“…These findings indicate the differences in salt tolerance between the studied species, since the high K + /Na + ratio in cytosol is associated with high salinity tolerance [101], which was the case for R. picroides in our study. Moreover, the present results are in agreement with previous reports [3,70], while Pérez-Alfocea et al [71] also suggested that high values of K/Na and Ca/Na ratios indicate an equilibrium of nutrients more similar to the nonsalinized plants.…”

Section: Leaf K/na and Ca/na Ratiossupporting

confidence: 94%

“…In the Asteraceae family, in which several important leafy crops and numerous wild edible herbs (including the tested species) belong, there are also included moderately salt-sensitive species (e.g., lettuce-Lactuca sativa [67]), moderately to highly resistant ones (e.g., wild chicory-Cichorium intybus [68] and spiny chicory-Cichorium spinosum [25]) and halophytes (e.g., sea fennel-Crithmum maritimum [41,69]). Differences in salt tolerance based on the plant growth restriction have been also reported between genotypes of the same plant species [70]. In addition, the higher root/shoot ratio in salt-treated plants of T. officinale may indicate its sensitivity to saline conditions.…”

Section: Plant Growthmentioning

confidence: 89%

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Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: Taraxacum officinale and Reichardia picroides

et al. 2021

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Soil salinization is one of the major environmental factors responsible for limited crop production throughout the world. Therefore, there is urgent need to find tolerant/resistant species to exploit in commercial cultivation systems. In this context, the valorization of wild edible greens for human consumption and/or medicinal purposes is gaining more and more interest. The aim of the present work was to study the effect of salinity, e.g., electrical conductivity: 2 mS cm−1 (nutrient solution EC), 6 mS cm−1 and 10 mS cm−1 on plant growth and chemical composition of Reichardia picroides and Taraxacum officinale plants grown in a floating hydroponic system. The results showed that R. picroides is a moderately salt-tolerant species, as the majority of plant growth parameters determined were not negatively affected under the treatment of 6 mS cm−1. On the other hand, the growth parameters of T. officinale plants were severely affected under the same conditions. Moreover, high salinity levels (EC at 10 mS cm−1) impaired the growth of both species. The content of leaves in chlorophylls (a, b and total), carotenoids+xanthophylls and total soluble solids was not significantly affected by the tested EC levels in both species, whereas the titratable acidity increased under the treatment of 10 mS cm−1. Moreover, R. picroides exhibited a more effective adaptation mechanism against saline conditions than T. officinale, as evidenced by the higher accumulation of osmolytes such as proline and the higher shoot K content, probably through a more efficient K/Na selectivity. In conclusion, both species were severely affected by high salinity; however, R. picroides showed promising results regarding its commercial cultivation under moderate salinity levels, especially in regions where resources of high-quality irrigation water are limited.

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Section: Leaf K/na and Ca/na Ratiossupporting

confidence: 94%

Section: Plant Growthmentioning

confidence: 89%

Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: Taraxacum officinale and Reichardia picroides

et al. 2021

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“…In glycophytes, excessive Na + often leads to K + deficiency under salt stress [ 16 ]. In fact, K + concentration decreased in all three cultivars except Royal, that maintained a high K + /Na + concentration in the leaves, an important mechanism used by plants to adapt to salt stress [ 16 , 17 , 18 , 21 ]. The susceptible cultivars Fadak86 and Picual, with a high concentration of Na+ in their leaves, did not activate the mechanisms to prevent salt translocation or decreasing its transport and did not exclude Na + from leaves, replacing it with K + , while the cultivar Koroneiki, partially salt susceptible, with the lowest concentration of Na + in the leaves, seemed to apply the mechanism of compartmentalizing toxic ions within the leaves [ 22 , 61 ].…”

Section: Discussionmentioning

confidence: 99%

“…The olive plant has developed a series of mechanisms to tolerate and grow when prolonged soil salinization occurs [ 19 ]. These mechanisms include preventing salt translocation or decreasing its transport, excluding Na + and Cl − from leaves [ 9 , 20 , 21 ], or compartmentalizing toxic ions within leaves [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Differentially Expressed Genes under Salt Stress in Olive

Mousavi

Mariotti

Valeri

et al. 2021

IJMS

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Climate change, currently taking place worldwide and also in the Mediterranean area, is leading to a reduction in water availability and to groundwater salinization. Olive represents one of the most efficient tree crops to face these scenarios, thanks to its natural ability to tolerate moderate salinity and drought. In the present work, four olive cultivars (Koroneiki, Picual, Royal de Cazorla and Fadak86) were exposed to high salt stress conditions (200 mM of NaCl) in greenhouse, in order to evaluate their tolerance level and to identify key genes involved in salt stress response. Molecular and physiological parameters, as well as plant growth and leaves’ ions Na+ and K+ content were measured. Results of the physiological measurements showed Royal de Cazorla as the most tolerant cultivar, and Fadak86 and Picual as the most susceptible ones. Ten candidate genes were analyzed and their complete genomic, CDS and protein sequences were identified. The expression analysis of their transcripts through reverse transcriptase quantitative PCR (RT-qPCR) demonstrated that only OeNHX7, OeP5CS, OeRD19A and OePetD were upregulated in tolerant cultivars, thus suggesting their key role in the activation of a salt tolerance mechanism.

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“…'Arvanitolia Serron' also maintained high K + levels in younger leaves under salinity. 66 Salinity induced growth suppression was much greater in olive cultivar 'Barnea' than in 'Arbequina'. While the former had a high leaf Clconcentration, the latter skipped salt damage by excluding Clat the root level.…”

Section: Salt Exclusionmentioning

confidence: 96%

Recent agriculture adaption regarding climate change

Kumar¹,

Kumari²

2018

APAR

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Food and nutritional security of a burgeoning global population in face of unabated land degradation, depletion of fresh water and prime croplands, and climate change impacts remains a challenge. Salinization of agricultural lands caused by the natural and anthropogenic factors a severe obstacles to realizing sustainable agricultural production. Majority of the fruit crops are highly susceptible to salinity and related problems like water logging. Use of salt tolerant scion and rootstock cultivars is seen as a viable means of lessening the salt induced damages. Nonetheless, development and commercial release of salt tolerant cultivars in fruit crops has progressed rather slowly. Moreover, salt tolerance of most of the currently available cultivars breaks down when root zone salinity exceeds the critical threshold. This has led to a departure from conventional screening trials to molecular and genomics tools to broaden the understanding of salt stress regulation at the gene, protein and metabolite levels. The ultimate aim is to introgress such genes into established cultivars in a manner that is cost efficient and safe from human and environmental health perspectives.

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Salt tolerance evaluation of nine indigenous Greek olive cultivars

Cited by 12 publications

References 44 publications

Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: Taraxacum officinale and Reichardia picroides

Impact of Salinity on the Growth and Chemical Composition of Two Underutilized Wild Edible Greens: Taraxacum officinale and Reichardia picroides

Characterization of Differentially Expressed Genes under Salt Stress in Olive

Recent agriculture adaption regarding climate change

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