Ascorbic acid of cowpea seeds under saline stress

Nunes, Luma Rayane de Lima; Pinheiro, Paloma Rayane; Cabral, Felipe Augusto Sombra; Silva, João Batista da; Dutra, Alek Sandro

doi:10.1590/2317-1545v41n4222276

Cited by 4 publications

(1 citation statement)

References 21 publications

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“…Thus, the action of hydrogen peroxide in avoiding or reducing the disorganization of the cell membrane caused by salinity, at more intense levels, becomes notorious. Nunes, Pinheiro, Cabral, Silva and Dutra (2019) discovered that irrigation with saline water leads to an increment in the damage to the cell membrane in bean plants and at the highest tested salinity level (7.5 dS m -1 ), the release of electrolytes in these tissues increased about 1.2 times compared to the control treatment (0.0 dS m -1 ).…”

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confidence: 97%

Physiological changes and growth of soursop plants under irrigation with saline water and H2O2 in post-grafting phase

Veloso¹,

Lima²,

Azevedo³

et al. 2020

Semina: Ciênc. Agrár.

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The low availability of water associated with high salt concentrations in irrigation water has become one of the leading challenges for agricultural production in the semiarid region of Northeastern Brazil. Thus, the study of strategies to enable the use of saline water in agriculture is essential. From this perspective, this study aimed to evaluate alterations in gas exchange, chloroplast pigments, and cell damage in soursop (Anonna muricata L.) irrigated with saline water and under exogenous application of hydrogen peroxide (H2O2) in the post-grafting phase. A study was conducted in Campina Grande, PB, under greenhouse conditions. The treatments were distributed in a randomized block design, in a 4 × 2 factorial arrangement, consisting of four levels of electrical conductivity of water (ECw; 1.6; 2.4; 3.2 and 4.0 dS m-1) and two concentrations of H2O2 (0 and 20 µM) with four replications. Irrigation water salinity from 1.6 dS m-1 caused changes in the stomatal conductance, respiration, and internal CO2 concentration of soursop plants. A 20 µM concentration of H2O2 reduced the effects of salinity on transpiration and CO2 assimilation values, in addition to promoting the biosynthesis of photosynthetic pigments and reducing cell damage in soursop plants, at 150 days after transplantation. The exogenous application of 20 µM H2O2 reduced the deleterious effects of salinity on the stem diameter of both rootstock and scion in soursop plants irrigated with ECw of 1.6 dS m-1. The exogenous application of 20 µM H2O2 was not efficient in mitigating the damage caused by salinity on the stem diameter of the soursop at grafting point.

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Section: According Tomentioning

confidence: 97%

Physiological changes and growth of soursop plants under irrigation with saline water and H2O2 in post-grafting phase

Veloso¹,

Lima²,

Azevedo³

et al. 2020

Semina: Ciênc. Agrár.

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Potassium-phosphorus fertilization to reduce salt stress in West Indian cherry

Dias,

Soares de Lima,

Gheyi

et al. 2023

Journal of Plant Nutrition

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Application of hemin-induced growth and biochemical modifications in Hassawi okra (Abelmoschus esculentus L.) grown in seawater salinity

2020

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The present study investigated the possible protective role of hemin (75 µM) on okra (Abelmoschus esculentus L.) plants grown under diluted seawater (seawater/normal water) in plastic bags on loam soil and compost (1:1). Four levels of seawater were prepared by diluting seawater to give 1.8, 3.6, 5.4 and 7.2 dsm-1. Okra plants were irrigated with these concentrations of seawater. The effects of seawater salinity on okra plants were evaluated by determining growth parameters, superoxide dismutase (SOD) activity, catalase (CAT) activity ascrobate content, α-amylase, protease and lipid peroxidation in the presence or absence of hemin. The study found that seawater salinity resulted in a high level of lipid peroxidation, which was associated with significant decrease in growth parameters and protease activity. The activity of SOD, CAT and ascorbate content were increased significantly, compared to control plants. Alleviation effect of hemin was obvious on growth parameters at most salinity levels. This was associated by enhancement of CAT and α-amylase activities and reduction of lipid peroxidation compared to the corresponding untreated salinized plants. So hemin could play a central function as a signal molecule in salt tolerance of okra plants. The results of this study demonstrated that okra can be grown successfully using diluted seawater and the different antioxidants could partially alleviate the harmful effects of seawater stress that reflected on growth and some physiological changes of okra plant. According to these findings, it can be pronounced that the treatment of salinized okra with hemin (75 µM) may reduce the negative impact of light salinity stress.

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Ascorbic acid of cowpea seeds under saline stress

Cited by 4 publications

References 21 publications

Physiological changes and growth of soursop plants under irrigation with saline water and H2O2 in post-grafting phase

Physiological changes and growth of soursop plants under irrigation with saline water and H2O2 in post-grafting phase

Potassium-phosphorus fertilization to reduce salt stress in West Indian cherry

Application of hemin-induced growth and biochemical modifications in Hassawi okra (Abelmoschus esculentus L.) grown in seawater salinity

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