Supplementary potassium and calcium improves salt tolerance in olive plants

Larbi, Ajmi; Kchaou, Haifa; Gaaliche, Badii; Gargouri, Kamel; Boulal, Hakim; Morales, Fermı́n

doi:10.1016/j.scienta.2019.108912

Cited by 54 publications

(35 citation statements)

References 56 publications

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“…This result is important in terms of emphasizing the ability of calcium applications to reduce adverse effects in saline conditions. The result is shown in parallel with many studies (Türkmen et al, 2002;Yakıt and Tuna, 2006;Durukan and Demirbas, 2018;Larbi et al, 2020).…”

Section: Resultssupporting

confidence: 88%

“…Chlorine ions (Cl -) formed by NaCl molecules ionization deposited on the cell membrane in the presence salt stress rapidly drop pH; this situation results in the breaking of hydrogen bonds of membrane protein and is caused to disperse into the environment, ions such as K + and Ca ++ from protein pump (Avcıoğlu et al, 2003). This leads to deterioration of membrane integrity and ion leakage (Larbi et al, 2020). Briefly, the increase in the amount of ion leakage is an indication that the plant is damaged more than stress.…”

Section: Resultsmentioning

confidence: 99%

“…Total leaf number, number of dried leaf, main stem diameter, plant crown diameter, plant height, fresh and dry weight of root, leaf chlorophyll (using chlorophyll meter (SPAD-502, Konica Minolta Sensing, Inc., Japan)), stomatal conductance (using a porometer (Sc 1 Porometer, Decagon Devices Inc., WA, USA)) of the seedlings were determined at the end of the study. In addition, the relative (proportional) water content (RWC) and ion leakage in the leaf tissues were determined according to the method of Larbi et al (2020).…”

Section: Methodsmentioning

confidence: 99%

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Calcium nitrate on growth and ornamental traits at salt-stressed condition in ornamental kale (Brassica oleracea L. var. Acephala)

Karagöz

Dursun

2021

Ornam. Hortic.

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Ornamental plants are used to improve the aestheticquality of urban and rural landscapes, recreational areas, interiorscapes and commercial sites. Any negative effects of salts on ornamental plant growth have to be taken into consideration mainly for their negative influences on aesthetic value of ornamental plants. The research was conducted to determine the effects of different concentrations of calcium nitrate on some stress parameters (i.e. leaf relative water content, chlorophyll, stomatal conductance, ion leakage in the leaf tissues) and some plant growth parameters (total leaf number, number of dried leaf, main stem diameter, plant crown diameter, plant height, fresh and dry weight of root) of ornamental kale (Brassica oleracea L. var. acephala) plant grown under saline conditions. Four doses of NaCl (NaCl1:30, NaCl2:60, NaCl3:90, NaCl4:120 mM), three doses of Ca(NO3)2 (CaN1:5, CaN2:10, CaN3:15 mM), groups combined together in all doses of NaCl and Ca (NO3)2 and control (NaCl0:0 + CaN0:0) were applied into the pots with three replications. Ca (NO3)2 was applied to the leaf surface of the plants in the pots to be applied as Ca (NO3)2 spray. When the plants reached a certain maturity (two weeks after transfer to the pot), salt stress applications were started. Ca (NO3)2 treatments have applied after one week from salt stress applications. Calcium nitrate treatements applied under salt stress conditions had positive effects and increasing in effect on all parameters examined except for chlorophyll and ion leakage in leaf tissues of the plant. With increasing in calcium nitrate concentration, morphological and physiological characteristics of plants were observed increases in general. It was concluded that the increase of the number of leaves by NaCl2+CaN3 application can be minimized with CaN3 (with 15 mM Ca (NO3)2) stress caused by 60 mM salt concentration According to the results of the research, calcium nitrate applications can be recommended for ornamental kale plants grown under salt stress conditions especially limiting the negative effects of stress and to minimize such damage.

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Calcium nitrate on growth and ornamental traits at salt-stressed condition in ornamental kale (Brassica oleracea L. var. Acephala)

Karagöz

Dursun

2021

Ornam. Hortic.

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“…Calcium has been related to salinity tolerance, 11 cold acclimation, 12 and pathogen susceptibility 13 in olive. Different studies emphasized the potential of using CaCl 2 in the table olive industry to preserve black ripe olives in salt‐free solution, delaying the softening during all the processing stages, 14 or for the production of ‘Spanish‐style’ green table olives, promoting higher firmness and lower sodium content 15 .…”

Section: Introductionmentioning

confidence: 99%

Calcium applications throughout fruit development enhance olive quality, oil yield, and antioxidant compounds' content

Morales‐Sillero

Lodolini²,

Suárez

et al. 2020

J Sci Food Agric

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BACKGROUND Calcium is a preservative and firming agent largely used in the table olive industry. Foliar applications of calcium (as calcium chloride, CaCl2) before harvest have been proposed in other fruits to increase firmness and reduce physiological disorders or internal damage. However, there is still a shortage of information regarding the source, the concentration, the number, and the period of calcium application onto the canopy to get an effective response of olive quality. In this study, we aimed to investigate the effect of two concentrations of CaCl2 foliar treatments (0.5% and 1.0%), applied at different stages of fruit development (at the end of fruit set, end of pit hardening, and prior to harvesting), on olive quality for two varieties (‘Manzanilla de Sevilla’ and ‘Ascolanta tenera’), cultivated in two different geographical areas (Spain and Italy respectively). RESULTS The calcium concentrations applied enhanced the fruit calcium content and decreased sodium and potassium. They also improved the mechanical properties without modifying fruit morphology or cuticle thickness; nor did they cause phytotoxicity. Foliar treatments increased the oil content in the pulp (dry weight basis) and the amount of hydroxytyrosol, tyrosol, and oleuropein, among other phenols. CONCLUSION Calcium foliar applications during fruit development effectively increase olive quality. © 2020 Society of Chemical Industry

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“…Its fruit is of major agricultural importance as a source of olive oil and table olives (Cimato & Attilio 2011). In Tunisia, the olive tree is the most cultivated fruit species, there are about 88 million trees spread over 1,880 thousand hectares (Larbi et al 2020).…”

Section: Introductionmentioning

confidence: 99%

The Inventory of Scale Insects (Hemiptera, Coccoidea) Associated With Olive Tree in North of Tunisia

gharbi

2020

Preprint

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Background: This study was realized for more than four years (from 2014 to 2018) in olive groves of northern Tunisian governorates. Scale insect samples were collected from leaves, stems and fruits.Results: An annotated list of 22 scale insect species has been recorded. These species divided into 4 families. The family Diaspididae is the most species-rich, with 14 species in 9 genera; Coccidae contains 4 species in 3 genera; Pseudococcidae contains 3 species in 3 genera; and Asterolecaniidae contains 1 species in 1 genus.Conclusions: This paper contains 3 species recorded for the first time in the Tunisian fauna: Saissetia coffeae (Walker), Diaspidiotus ostreaeformis (Curtis) and Lepidosaphes conchiformis (Gmelin).

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Supplementary potassium and calcium improves salt tolerance in olive plants

Cited by 54 publications

References 56 publications

Calcium nitrate on growth and ornamental traits at salt-stressed condition in ornamental kale (Brassica oleracea L. var. Acephala)

Calcium nitrate on growth and ornamental traits at salt-stressed condition in ornamental kale (Brassica oleracea L. var. Acephala)

Calcium applications throughout fruit development enhance olive quality, oil yield, and antioxidant compounds' content

The Inventory of Scale Insects (Hemiptera, Coccoidea) Associated With Olive Tree in North of Tunisia

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