The Appropriate Source of Nitrogen for Italian Zucchini Under Salt Stress Conditions

Fernandes, Cleyton dos Santos; Neto, Miguel Ferreira; Dias, Nildo da Silva; Reges, Layla Bruna Lopes; Silva, Luderlândio de Andrade; Moreira, Rômulo Carantino Lucena; Silva, Alex Álvares da; Paiva, Emanoela Pereira de; Fernandes, Pedro Dantas; Sá, Francisco Vaniés da Silva

doi:10.1007/s42729-021-00668-w

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…Later, salt stress causes osmotic stress and ionic imbalance (Farouk;Elhindi;Alotaibi, 2020), which results in stomatal closure and reductions in transpiration, CO 2 assimilation rate, and instantaneous carboxylation and water use efficiency (Chrysargyris et al, 2019;Silva et al, 2020). Stomata are the structures responsible for controlling the gas exchange of plants (Fernandes et al, 2022). The regulation of stomata under salt stress may also be related to the synthesis of abscisic acid (ABA), a plant hormone that acts on the accumulation of compatible osmolytes and protein synthesis, which help maintain leaf turgor (Verslues et al, 2006;Jones, 2016).…”

Section: Resultsmentioning

confidence: 99%

Salicylic acid attenuates the harmful effects of salt stress on the morphophysiology of early dwarf cashew

et al. 2023

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Brazil is one of the largest cashew producers in the world, and its Northeast region stands out. However, cashew growth and development are negatively affected by irrigation with brackish water in its production. In this context, strategies have been employed to alleviate salt stress effects on plants. Among the strategies, the exogenous application of elicitor substances, such as salicylic acid, has stood out. Given the above, the objective of the present study was to evaluate the effect of foliar application of salicylic acid as an attenuator of salt stress on the morphophysiology of early dwarf cashew. The study was carried out in a greenhouse, in a randomized block design, in a 5 × 4 factorial arrangement, with five levels of electrical conductivity of the irrigation water - ECw (0.4, 1.2, 2.0, 2.8, and 3.6 dS m-1) and four concentrations of salicylic acid - SA (0, 1, 2, and 3 mM), with three replicates and one plant per plot. Irrigation with water of electrical conductivity above 0.4 dS m-1 negatively affected the leaf relative water content, gas exchange, photosynthetic pigments, and growth of plants. Salicylic acid at a concentration of 1 mM attenuated the effects of salt stress on electrolyte leakage, relative water content, gas exchange, synthesis of photosynthetic pigments, and growth of early dwarf cashew irrigated using water with ECw of up to 3.6 dS m-1, at 210 days after transplanting.

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Section: Resultsmentioning

confidence: 99%

Salicylic acid attenuates the harmful effects of salt stress on the morphophysiology of early dwarf cashew

et al. 2023

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“…Stomata are the structures responsible for regulating the gas exchange of plants [ 49 ]. In this study, the first cycle of sour passion fruit foliar application of salicylic acid at a concentration of 1.2 mM increased stomatal conductance, resulting in improvements in the internal CO 2 concentration, transpiration, and CO 2 assimilation rate ( Figure 2 ).…”

Section: Discussionmentioning

confidence: 99%

Foliar Applications of Salicylic Acid on Boosting Salt Stress Tolerance in Sour Passion Fruit in Two Cropping Cycles

Sobrinho

Silva

Lima

et al. 2023

Plants

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Brazil stands out as the largest producer of sour passion fruit; however, the water available for irrigation is mostly saline, which can limit its cultivation. This study was carried out with the objective of evaluating the effects of salicylic acid in the induction of tolerance in sour passion fruit to salt stress. The assay was conducted in a protected environment, using a completely randomized design in a split-plot scheme, with the levels of electrical conductivity of the irrigation water (0.8, 1.6, 2.4, 3.2, and 4.0 dS m−1) considering the plots and concentrations of salicylic acid (0, 1.2, 2.4, and 3.6 mM) the subplots, with three replications. The physiological indices, production components, and postharvest quality of sour passion fruit were negatively affected by the increase in the electrical conductivity of irrigation water, and the effects of salt stress were intensified in the second cycle. In the first cycle, the foliar application of salicylic acid at concentrations between 1.0 and 1.4 mM partially reduced the harmful effects of salt stress on the relative water content of leaves, electrolyte leakage, gas exchange, and synthesis of photosynthetic pigments, in addition to promoting an increase in the yield and quality parameters of sour passion fruit.

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“…Stomata are the structures responsible for regulating the gas exchange of plants [49]. Okra plants subjected to the highest level of electrical conductivity of the nutrient solution showed greater stomatal closure (Figures 4B and 11A), which occurs as a mechanism of tolerance to reduce the transpiration rate (Figures 5A and 12A) under salt stress conditions and consequently reduce the absorption of water and nutrients [48][49][50]. However, this reduction in stomatal conductance also reduces the CO 2 assimilation rate (Figures 5B and 12B) and the instantaneous carboxylation efficiency (Figures 5C and 12C).…”

Section: Discussionmentioning

confidence: 99%

Salicylic Acid Modulates Okra Tolerance to Salt Stress in Hydroponic System

et al. 2022

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Salinity is one of the most devastating abiotic stresses that limit plant growth and yield, especially in arid and semi-arid regions. The objective of this study was to evaluate the effect of foliar application of salicylic acid in mitigating the effects of salt stress on okra cultivation in a hydroponic system. The study was conducted in a greenhouse, consisting of two experiments. A completely randomized design was adopted in a split-plot scheme, with four levels of electrical conductivity of the nutrient solution—EC (2.1; 3.6; 5.1, and 6.6 dS m−1) considered the plots and four salicylic acid concentrations—SA (0, 1.2; 2.4, and 3.6 mM), the subplots, with four replications. The second experiment differed from the first only by the increase in the EC levels (3.0, 5.0, 7.0, and 9.0 dS m−1). An increase in the electrical conductivity of the nutrient solution negatively affected the physiology and production components of okra. However, foliar application of salicylic acid at concentrations between 1.2 and 2.3 mM reduced the harmful effects of salt stress. The salinity threshold for hydroponic cultivation of okra was 2.54 dS m−1, with a reduction of 7.98% per unit increment in EC above this level.

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The Appropriate Source of Nitrogen for Italian Zucchini Under Salt Stress Conditions

Cited by 5 publications

References 27 publications

Salicylic acid attenuates the harmful effects of salt stress on the morphophysiology of early dwarf cashew

Salicylic acid attenuates the harmful effects of salt stress on the morphophysiology of early dwarf cashew

Foliar Applications of Salicylic Acid on Boosting Salt Stress Tolerance in Sour Passion Fruit in Two Cropping Cycles

Salicylic Acid Modulates Okra Tolerance to Salt Stress in Hydroponic System

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