Morphological and physiological alterations induced by lactofen in soybean leaves are reduced with nitric oxide

Ferreira, L.C.; Catâneo, A.C.; Remaeh, Lígia Maria Ramazzini; Búfalo, Jennifer; Scavroni, Joseane; Andréo-Souza, Y.; Cechin, Inês; Soares, Bruno José Aparecido

doi:10.1590/s0100-83582011000400014

Cited by 6 publications

(4 citation statements)

References 30 publications

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“…Treatments consisted of a combination of an aqueous solution of sodium nitroprusside (SNP, NO donor; Na 2 [Fe (CN) 5 NO]•2H 2 O, SigmaAldrich, Saint Louis, MO, USA) and elevated temperature imposed at the V3 development stage [17]. The plants were treated with two doses of SNP: 0 and 100 µM for two consecutive days at 24-h intervals, using a hand sprayer with a total volume of 5 mL per plant [18], under 25 • C and 40 • C. The high temperature (HT) was imposed after the both SNP applications by gradually increasing from 25 • C at 10:00 a.m. until reaching 40 • C ± 0.5 • C at 11:30 a.m., which was maintained for five hours. After this period, the temperature gradually decreased until it returned to 25 • C at 6:30 p.m., until repeating the cycle the following day.…”

Section: Experimental Conditions and Experimental Designmentioning

confidence: 99%

Nitric Oxide Increases the Physiological and Biochemical Stability of Soybean Plants under High Temperature

et al. 2019

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Thermal stress reduces plant growth and development, resulting in considerable economic losses in crops such as soybeans. Nitric oxide (NO) in plants is associated with tolerance to various abiotic stresses. Nevertheless, there are few studies of the range of observed effects of NO in modulating physiological and metabolic functions in soybean plants under high temperature. In the present study, we investigated the effects of sodium nitroprusside (SNP, NO donor), on anatomical, physiological, biochemical, and metabolic processes of soybean plants exposed to high temperature. Soybean plants were grown in soil: sand (2:1) substrate in acclimatized growth chambers. At developmental V3 stage, plants were exposed to two temperatures (25 °C and 40 °C) and SNP (0 and 100 μM), in a randomized block experimental design, with five replicates. After six days, we quantified NO concentration, leaf anatomy, gas exchange, chlorophyll a fluorescence, photosynthetic pigments, lipid peroxidation, antioxidant enzyme activity, and metabolite profiles. Higher NO concentration in soybean plants exposed to high temperature and SNP showed increased effective quantum yields of photosystem II (PSII) and photochemical dissipation, thereby maintaining the photosynthetic rate. Under high temperature, NO also promoted greater activity of ascorbate peroxidase and peroxidase activity, avoiding lipid peroxidation of cell membranes, in addition to regulating amino acid and organic compound levels. These results suggest that NO prevented damage caused by high temperature in soybean plants, illustrating the potential to mitigate thermal stress in cultivated plants.

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Section: Experimental Conditions and Experimental Designmentioning

confidence: 99%

Nitric Oxide Increases the Physiological and Biochemical Stability of Soybean Plants under High Temperature

et al. 2019

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“…The reduction in protein content in Oryza sativa leaves by paraquat was prevented by nitric oxide by reducing the level of malondialdehyde and improving the activity of antioxidant enzymes, such as SOD, POD and GR [79]. Nitric oxide given as sodium nitroprusside at 50, 100 and 200 µM protected Glycine max plants by scavenging the ROS generated by 168 g ha -1 lactofen [80]. The protective role of brassinosteroids against biotic and abiotic stress has been documented in literature, but the action of brassinosteroids against damage by herbicides is not well validated.…”

Section: Newly Added Plant Hormonesmentioning

confidence: 98%

Contribution of Plant Growth Regulators in Mitigation of Herbicidal Stress

Varshney¹,

Khan²

2015

Zhu et al., J Plant Biochem Physiol

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Weeds contribute to severe loss of agricultural crop productivity. Herbicides are efficient, cheap and effective method for their control, but their multiple uses at higher concentration have resulted in induced toxicity and stress in non-target crops. The herbicideinduced toxicity affects growth, photosynthesis, physiological and biochemical characteristics of plants directly impacting yield of plants. It is therefore, necessary to find ways to mitigate the herbicidal effects by increasing the tolerance of crops to their application. Plant growth regulators are known to promote growth and development of plants under optimal and stressful environment. They induce various physiological and biochemical responses and also confer tolerance of plants to abiotic stresses. The present review covers the aspects of herbicidal response of plants and evaluates the contribution of plant growth regulators in mitigating herbicidal stress effects and increasing the tolerance of plants. Further, future research in this direction to enhance our understanding on the relation between plant growth regulators and herbicides to improve tolerance of crop plants is discussed. The study suggests the use of plant growth regulators as a tool in mitigating effects of herbicidal stress together with improved growth and development. [29]. The decrease in photosynthetic characteristics with herbicides might have involved its effects on chlorophyll biosynthetic pathway and enzymes of carbon assimilation. The details on the key points in the biosynthetic pathway of photosynthetic pigments and activity of carbon assimilation enzymes are still lacking and needs attention. Chlorophyll fluorescence is a simple and widely used method to study the mechanism of photosynthesis and is used as marker to detect stress in plants. The herbicides application may block photosynthesis related intermediate metabolites and affect fluorescence emission. The herbicides that inhibit glutamine synthase, protoporphyrinogen oxidase and carotenoid biosynthesis affect chlorophyll fluorescence [30], and even lipid synthesis inhibitor herbicides induce chlorophyll fluorescence. Application of 1.96 kg ha -1 Terbutryn to Vicia faba plants strongly decreased F v /F m ratio and CO 2 assimilation capacity [31]. Recently, Sousa et al. [32] have shown that application of imidazolinone group of herbicides to Oryza sativa changed the photosynthetic metabolism of plants and chlorophyll a fluorescence. Contribution of Plant Growth Regulators in Mitigation of Herbicidal Stress OsmolytesThe production of osmolytes is an adaptation against stress in plants [33]. These osmolytes include polyols (sugars, fructans, mannitol, pinitol and inositol), amino acids and their derivatives (proline, isoleucine, valine, betaine, glycinebetaine). Proline is widely studied osmolyte that acts as a cellular protector in several plant species by scavenging ROS produced in response to abiotic stress [34][35][36]. It provides resistance against stress either by uniting oxygen and free radicals g...

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“…Nitric oxide (NO), an endogenous free radical or provided through the donor compounds, such as sodium nitroprusside (SNP), has been studied for its ability to contain the damage caused by the oxidative stress in plants (Ferreira et al, 2011), with its protective action confirmed by the use of the nitric oxide sequestrant cPTIO (Neill et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Electrolyte Leakage and the Protective Effect of Nitric Oxide on Leaves of Flooded Rice Exposed to Herbicides

Silva¹,

Urban²,

Balbinot³

et al. 2016

Planta daninha

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-The nitric oxide acts on the antioxidant system of plants and can discontinue the damage of herbicides elicitors of oxidative stress that cause the disruption of membranes and leakage of cellular contents. In order to evaluate the protective effect of nitric oxide in electrolytes leakage, leaf segments of the Puita INTA CL rice cultivar were incubated with 0, 5, 50, 500 and 5,000 μM clomazone (360 g a.i. L -1 ), oxadiazon (250 g a.i. L -1 ), oxyfluorfen (240 g a.i. L -1 ) and the formulated mixture of paraquat (200 g a.i. L -1 ) + diuron (100 g a.i. L -1 ) to obtain the maximum potential conductivity of 50% (MPC 50 ). Subsequently, leaf segments were pre-treated with 0, 200 and 2,000 μM of sodium nitroprusside (SNP) for four hours and further incubated for 48 hours with 0, 0.5, 1, 2 and 4 times the concentration of the herbicide that caused the CMP 50 , and the protective effect was reassessed in the presence of nitric oxide scavenger, cPTIO. The MPC 50 was caused by exposure to 188.9, 273.4, 410.2 + 205.1 and 917.0 μM of Oxadiazon, Oxyfluorfen, Paraquat + Diuron and Clomazone. Pretreatment with 200 μM of SNP reduced electrolyte leakage in leaf segments exposed to 2 and 4 times the MPC 50 to oxadiazon and paraquat + diuron, while 2,000 μM reduced the damage caused by oxyfluorfen, at the same concentrations. Also, 200 and 2,000 μM of SNP were efficient for clomazone, and the protection was confirmed by cPTIO in all cases.Keywords: Oryza sativa, sodium nitroprusside, clomazone, oxadiazon, oxyfluorfen, paraquat + diuron. 188,9; 273,4; 410,2 + 205,1; e 917,0 RESUMO -O óxido nítrico atua no sistema antioxidante das plantas e pode conter o dano de herbicidas

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Morphological and physiological alterations induced by lactofen in soybean leaves are reduced with nitric oxide

Cited by 6 publications

References 30 publications

Nitric Oxide Increases the Physiological and Biochemical Stability of Soybean Plants under High Temperature

Nitric Oxide Increases the Physiological and Biochemical Stability of Soybean Plants under High Temperature

Contribution of Plant Growth Regulators in Mitigation of Herbicidal Stress

Electrolyte Leakage and the Protective Effect of Nitric Oxide on Leaves of Flooded Rice Exposed to Herbicides

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