Exogenous arginine modulates leaf antioxidant enzymes and hydrogen peroxide content in tomato plants under transient heat stresses

Conceição, Vivyan Justi; Mello, Simone C.; Carvalho, Marcia Eugenia Amaral; Gaziola, Salete Aparecida; Azevedo, Ricardo Antunes

doi:10.1590/1678-4499.20200493

Cited by 10 publications

(4 citation statements)

References 27 publications

(35 reference statements)

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“…The aim of this study was to investigate the role of arginine in mediating N-deficiency stress. Consistent with previous studies (Ji et al, 2018;Conceição et al, 2021), we found that the effect of arginine was dose-dependent. The photosynthetic rate of plants was higher under N deficiency when 100 µmol L −1 arginine was applied; these plants also exhibited high SH, dry weight, and numbers of leaves.…”

Section: Discussionsupporting

confidence: 93%

Arginine Increases Tolerance to Nitrogen Deficiency in Malus hupehensis via Alterations in Photosynthetic Capacity and Amino Acids Metabolism

et al. 2022

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Arginine plays an important role in the nitrogen (N) cycle because it has the highest ratio of N to carbon among amino acids. In recent years, there has been increased research interest in improving the N use of plants, reducing the use of N fertilizer, and enhancing the tolerance of plants to N deficiency. Here, the function of arginine in the growth of apple (Malus hupehensis) under N deficiency was explored. The application of 100 μmol L–1 arginine was effective for alleviating N-deficiency stress. Exogenous arginine promoted the absorption and use of N, phosphorus (P), and potassium (K) under low N stress. The net photosynthetic rate, maximal photochemical efficiency of photosystem II, and chlorophyll content were higher in treated plants than in control plants. Exogenous arginine affected the content of many metabolites, and the content of many amino acids with important functions was significantly increased, such as glutamate and ornithine, which play an important role in the urea cycle. Half of the metabolites were annotated to specialized metabolic pathways, including the synthesis of phenolic substances, flavonoids, and other substances with antioxidant activity. Our results indicate that arginine promotes the plant photosynthetic capacity and alters amino acid metabolism and some antioxidants including phenolic substances and flavonoids to improve the tolerance of apple to N deficiency, possibly through the improvement of arginine content, and the absorption of mineral.

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Section: Discussionsupporting

confidence: 93%

Arginine Increases Tolerance to Nitrogen Deficiency in Malus hupehensis via Alterations in Photosynthetic Capacity and Amino Acids Metabolism

et al. 2022

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“…These activities relieve plant stress and promote metabolic function even under unfavorable conditions, thereby maintaining plant productivity. Moreover, by reducing H 2 O 2 levels, these enzymes reduce cellular damage caused by lipid peroxidation, as indicated by the decrease in leaf levels of MDA (Figure 3a), an important biomarker of oxidative stress in plants (Conceição et al., 2021; Ferreira et al., 2017; Perveen et al., 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Averages followed by the same letter do not differ by the least significant difference test (p < 0.10). peroxidation, as indicated by the decrease in leaf levels of MDA (Figure 3a), an important biomarker of oxidative stress in plants (Conceição et al, 2021;Ferreira et al, 2017;Perveen et al, 2019).…”

Section: Crop Sciencementioning

confidence: 99%

A protective foliar complex boosts sugarcane quality and energy yield by reducing oxidative stress under drought

Jacomassi,

Momesso,

Pacola

et al. 2023

Crop Science

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Water stress negatively impacts plant morphology and physiology by inducing metabolic oxidative stress, which leads to cellular damage. Applying nutrients and/or organic molecules, such as amino acids, may mitigate the effects of drought stress. In the present study, the effects of a protective foliar complex (PFC) on late‐harvest sugarcane (Saccharum spp L.) (dry season) were evaluated. Four field experiments were carried out in commercial areas of sugarcane production in the central‐south region of Brazil using sugarcane variety CTC4: in the fourth and second ratoons in 2019 and in the fifth and third ratoons in 2020. The treatments consisted of foliar application or no application of the PFC at the beginning of the dry period in June. The PFC was applied at a dose of 10 L ha−1 in a water volume of 100 L ha−1. PFC application increased the activities of antioxidant enzymes (superoxide dismutase, peroxidase, and catalase) in sugarcane leaves. PFC application also reduced leaf levels of malondialdehyde and hydrogen peroxide (H2O2). On average, PFC application increased sucrose accumulation by 2.26 and 1.74 Mg ha−1 in 2019 and 2020, respectively, indicating improved raw material quality. In addition, PFC application mitigated damage caused by drought, with average increases in stalk productivity of 10.7 and 7.6 Mg ha−1 in 2019 and 2020, respectively. The positive effects of PFC application on plant antioxidant enzymes enabled greater biomass accumulation and, in turn, higher energy cogeneration.

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“…In tomatoes, foliar applications of arginine improved yield and quality components, such as lycopene, vitamin C, soluble sugar contents and nitrogen accumulation (Wang et al, 2021). Additionally, it can protect tomatoes from transient heat stress, probably due to decreasing the hydrogen peroxide level to avoid oxidative imbalance with an increased concentration of arginine application (Conceição et al, 2021). In ora-pro-nobis plants, applying L-arginine enhanced their net photosynthetic rate, leaf area and fresh and dry masses and increased secondary metabolites, such as carotenoids and crude protein, in the leaves (Freitas et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Exogenous L-arginine and light-emitting diode light supplementation to enhance growth, quality and antioxidant activity in green perilla microgreens

2023

ANRES

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Importance of the work: Green perilla is a medicinal plant rich in nutrients and bioactive compounds, especially at the microgreen stage. Enhancing the productivity and quality of green perilla microgreens can upgrade their product value for growers and provide increased variety for consumers regarding healthy products. Objectives: To investigate the application of light-emitting diode (LED) illumination along with amino acid supplements, such as L-arginine to promote the growth, productivity and quality of green perilla microgreens. Materials & Methods:The experimental design was a 4×4 factorial completely randomized design with two factors consisting of: 1) L-arginine concentrations (0 mM, 1.25 mM, 2.5 mM or 5 mM); and 2) LED lighting (white [W], red [R], blue [B] or red:blue 70:30 [70R:30B]). The plants were grown under a light intensity of 80 ± 5 μmol/m 2 /s photosynthetic photon flux density, with an air temperature of 25°C and relative humidity of 65-70%. Results: The 70R:30B LED lighting promoted not only the best growth (leaf fresh weight and leaf area) but also the best quality (nitrogen, crude protein, vitamin C, total phenolics and total flavonoids contents) of the microgreens. In addition, the white LEDs enhanced total chlorophyll, total carotenoids, nitrogen and crude protein. Furthermore, applying 5.0 mM of L-arginine improved the quality of the green perilla microgreens (total chlorophyll, carotenoids nitrogen and crude protein contents and 2,2-diphenyl-1-picrylhydrazyl scavenging activity). Since there was an interaction between the two factors, the combination of 5 mM L-arginine and the 70R:30B illumination significantly stimulated the plant height, stem fresh weight and total flavonoid contents of the microgreen product. Main finding: Applying 70R:30B LEDs with 5 mM L-arginine was appropriate for green perilla microgreen production.

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Exogenous arginine modulates leaf antioxidant enzymes and hydrogen peroxide content in tomato plants under transient heat stresses

Cited by 10 publications

References 27 publications

Arginine Increases Tolerance to Nitrogen Deficiency in Malus hupehensis via Alterations in Photosynthetic Capacity and Amino Acids Metabolism

Arginine Increases Tolerance to Nitrogen Deficiency in Malus hupehensis via Alterations in Photosynthetic Capacity and Amino Acids Metabolism

A protective foliar complex boosts sugarcane quality and energy yield by reducing oxidative stress under drought

Exogenous L-arginine and light-emitting diode light supplementation to enhance growth, quality and antioxidant activity in green perilla microgreens

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