Growth and gas exchange of soursop under salt stress and hydrogen peroxide application

Veloso, Luana Lucas de Sá Almeida; Silva, André Alisson Rodrigues da; Lima, Geovani Soares de; Azevedo, Carlos Alberto Vieira de; Gheyi, Hans Raj; Moreira, Rômulo Carantino Lucena

doi:10.1590/1807-1929/agriambi.v26n2p119-125

Cited by 20 publications

(17 citation statements)

References 25 publications

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“…Despite the negative effects of salts, irrigation with saline water can be made possible through the use of hydrogen peroxide (H 2 O 2 ) (Andrade et al, 2019). Seed pre-treatment or plant exposure to H 2 O 2 is an important mechanism to modulate cross-tolerance through action on various physiological processes, such as photosynthesis and stomatal regulation, and on different stress-responsive pathways, such as detoxification of reactive species of oxygen (ROS) (Veloso et al, 2022).…”

Section: Treatmentsmentioning

confidence: 99%

Gas exchange and growth of soursop under salt stress and H2O2 application methods

et al. 2022

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The production of soursop seedlings in the Northeast region of Brazil has faced limitations due to the high concentrations of salts in the water, so it is necessary to use techniques that enable its cultivation, and the application of hydrogen peroxide to minimize the deleterious effects of salt stress stands out. In this context, the objective was to evaluate forms of application of hydrogen peroxide as an attenuator of salt stress on the gas exchange and growth of soursop seedlings cv. Morada Nova. The experiment was conducted under greenhouse conditions, in an Regolithic Neosol of sandy loam texture, from the municipality of Lagoa Seca - PB. A completely randomized design was used in a 5 × 4 factorial arrangement, whose treatments resulted from the combination of five levels of electrical conductivity of irrigation water - ECw (0.6 – control, 1.2, 1.8, 2.4 and 3.0 dS m-1) and four forms of hydrogen peroxide application (M1 - without H2O2 application, M2 - application by seed soaking, M3 - application by foliar spraying, and M4 - application by seed soaking + foliar spraying), with four replicates and two plants per experimental unit, totaling 160 plants. The concentration of H2O2 used in the different forms of application was 20 µM. Irrigation water salinity from 0.6 dS m-1 reduced the gas exchange and growth of soursop. The method of H2O2 application by foliar spraying minimized the effects of salt stress on gas exchange. The method of H2O2 application by seed soaking reduced the effect of salt stress on the growth of soursop at 85 days after sowing.

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Section: Treatmentsmentioning

confidence: 99%

Gas exchange and growth of soursop under salt stress and H2O2 application methods

et al. 2022

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“…The decrease in CEi occurred because the deleterious effect of salt stress was greater on photosynthesis compared to internal carbon concentration. As salt stress becomes more severe, dehydration of mesophyll cells inhibits photosynthesis, mesophyll metabolism is impaired and carboxylation efficiency is compromised (Veloso et al, 2022).…”

Section: Resultsmentioning

confidence: 99%

Leaf gas exchanges and production of kale under Ca(NO3)2 concentrations in salinized nutrient solution

Silva

Oliveira

Nascimento

et al. 2023

Rev. bras. eng. agríc. ambient.

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Adequate mineral supplementation can be a strategy to enable the use of brackish water in the production of vegetables. This study intended to evaluate the effect of calcium nitrate concentrations on leaf gas exchanges and yield of kale (Brassica oleracea L) fertigated with salinized nutrient solutions. The experiment was conducted in a randomized block experimental design (4 + 1), with four replicates. Four nutrient solutions prepared in brackish water (6.0 dS m-1) containing four concentrations of Ca(NO3)2 [(750, 1,125, 1,500, and 1,875 mg L-1)] and a control treatment (standard nutrient solution using low-salinity water, 0.5 dS m-1 (750 mg L-1 of Ca(NO3)2) were used in the study. The following analyses were performed: leaf gas exchanges, leaf area, and fresh matter yield. The standard nutrient solution promoted higher values for photosynthetic rate (13.06 µmol CO2 m-2 s-1), stomatal conductance (0.19 mol H2O m-2 s-1), transpiration (2.76 mmol H2O m-2 s-1), instantaneous water use efficiency (4.73 mmol CO2 mol-1 H2O), instantaneous carboxylation efficiency (0.053 mmol CO2 mol-1 CO2), leaf area (2.78 cm2 per plant), and leaf fresh matter yield (2.64 kg per plant). The Ca(NO3)2 not nullified but mitigated the deleterious effect of salt stress on leaf gas exchanges, except for kale yield (leaf fresh matter).

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“…The salinity levels of the water were established based on a study conducted by [ 15 ], who observed that water up to 2.0 dS m −1 can be used to produce soursop seedlings with an acceptable average reduction (up to 10%) in growth. Concentrations of hydrogen peroxide were based on the results of an assay conducted by [ 9 ], who verified that the use of hydrogen peroxide at the concentration of 20 μM attenuated the harmful effects of irrigation water salinity on the initial growth and gas exchange of soursop cv. Morada Nova.…”

Section: Methodsmentioning

confidence: 99%

“…In soursop, salt stress induces loss of photosynthetic activity due to stomatal and non-stomatal limitations [ 8 , 9 ]. It compromises the quantum efficiency of photosystem II (PSII), demonstrating that PSII reaction centers have experienced photoinhibitory damage, which results in the formation of reactive oxygen species (ROS) [ 10 ] capable of inducing oxidative damage to proteins and other biological components [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Foliar Application of Hydrogen Peroxide on Gas Exchange, Photochemical Efficiency, and Growth of Soursop under Salt Stress

Capitulino

Lima

Azevedo

et al. 2023

Plants

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Hydrogen peroxide at low concentrations has been used as a salt stress attenuator because it induces a positive response in the antioxidant system of plants. This study aimed to assess the gas exchange, quantum yield, and development of soursop plants cv. Morada Nova grown with saline water irrigation and foliar hydrogen peroxide application. The experiment was carried out under greenhouse conditions using a randomized block design in a 4 × 4 factorial scheme corresponding to four levels of electrical conductivity of irrigation water, ECw (0.8, 1.6, 2.4, and 3.2 dS m−1), and four doses of hydrogen peroxide, H2O2 (0, 10, 20, and 30 μM), with three replicates. The use of irrigation water with electrical conductivity above 0.8 dS m−1 inhibited stomatal conductance, internal CO2 concentration, transpiration, maximum fluorescence, crown height, and vegetative vigor index of the Morada Nova cultivar of soursop. Compared to untreated plants, the hydrogen peroxide concentration of 30 μM resulted in greater stomatal conductance. Water salinity of 0.8 dS m−1 with hydrogen peroxide concentrations of 16 and 13 μM resulted in the highest variable fluorescence and quantum efficiency of photosystem II, respectively, of soursop plants cv. Morada Nova at 210 days after transplantation.

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Growth and gas exchange of soursop under salt stress and hydrogen peroxide application

Cited by 20 publications

References 25 publications

Gas exchange and growth of soursop under salt stress and H2O2 application methods

Gas exchange and growth of soursop under salt stress and H2O2 application methods

Leaf gas exchanges and production of kale under Ca(NO3)2 concentrations in salinized nutrient solution

Influence of Foliar Application of Hydrogen Peroxide on Gas Exchange, Photochemical Efficiency, and Growth of Soursop under Salt Stress

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