Antioxidant Systems are Regulated by Nitric Oxide-Mediated Post-translational Modifications (NO-PTMs)

Begara-Morales, Juan C.; Sánchez-Calvo, Beatriz; Chaki, Mounira; Valderrama, Raquel; Mata-Pérez, Capilla; Padilla, María N.; Corpas, Francisco J.; Barroso, Juan B.

doi:10.3389/fpls.2016.00152

Cited by 138 publications

(64 citation statements)

References 89 publications

(132 reference statements)

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“…− feeding, especially after exposing to stress [132,133], which may be again associated with the NO-triggered defence responses [134]. However, antioxidant systems may be sensitive to NH 4 + feeding, which may again be associated with the oxidative damage due to "ammonium toxicity" [67,135].…”

Section: Defence-related Enzymesmentioning

confidence: 99%

Unravelling the Roles of Nitrogen Nutrition in Plant Disease Defences

Sun

Wang

Mur

et al. 2020

IJMS

133

113

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Nitrogen (N) is one of the most important elements that has a central impact on plant growth and yield. N is also widely involved in plant stress responses, but its roles in host-pathogen interactions are complex as each affects the other. In this review, we summarize the relationship between N nutrition and plant disease and stress its importance for both host and pathogen. From the perspective of the pathogen, we describe how N can affect the pathogen’s infection strategy, whether necrotrophic or biotrophic. N can influence the deployment of virulence factors such as type III secretion systems in bacterial pathogen or contribute nutrients such as gamma-aminobutyric acid to the invader. Considering the host, the association between N nutrition and plant defence is considered in terms of physical, biochemical and genetic mechanisms. Generally, N has negative effects on physical defences and the production of anti-microbial phytoalexins but positive effects on defence-related enzymes and proteins to affect local defence as well as systemic resistance. N nutrition can also influence defence via amino acid metabolism and hormone production to affect downstream defence-related gene expression via transcriptional regulation and nitric oxide (NO) production, which represents a direct link with N. Although the critical role of N nutrition in plant defences is stressed in this review, further work is urgently needed to provide a comprehensive understanding of how opposing virulence and defence mechanisms are influenced by interacting networks.

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Section: Defence-related Enzymesmentioning

confidence: 99%

Unravelling the Roles of Nitrogen Nutrition in Plant Disease Defences

Sun

Wang

Mur

et al. 2020

IJMS

133

113

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“…Exogenous NO application in Arabidopsis effectively S-nitrosylated proteins involved in respiration, metabolism, signaling, and stress responses (Lindermayr et al, 2005;Astier et al, 2011;León et al, 2016). S-Nitrosylated proteins potentially involved in flooding signaling and adaptation include ERFVIIs, cytochrome c oxidase (COX), aconitase, phytoglobins, and the H 2 O 2 scavenger APX1 (Millar and Day, 1996;Perazzolli et al, 2004;Gupta et al, 2012;Gibbs et al, 2014;Begara-Morales et al, 2016). Indeed, some reports indicate that an NO burst may inhibit COX activity (Millar and Day, 1996;Brown, 2001).…”

Section: The Functional Role Of Nomentioning

confidence: 99%

Signal Dynamics and Interactions during Flooding Stress

et al. 2017

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Flooding is detrimental for nearly all higher plants, including crops. The compound stress elicited by slow gas exchange and low light levels under water is responsible for both a carbon and an energy crisis ultimately leading to plant death. The endogenous concentrations of four gaseous compounds, oxygen, carbon dioxide, ethylene, and nitric oxide, change during the submergence of plant organs in water. These gases play a pivotal role in signal transduction cascades, leading to adaptive processes such as metabolic adjustments and anatomical features. Of these gases, ethylene is seen as the most consistent, pervasive, and reliable signal of early flooding stress, most likely in tight interaction with the other gases. The production of reactive oxygen species (ROS) in plant cells during flooding and directly after subsidence, during which the plant is confronted with high light and oxygen levels, is characteristic for this abiotic stress. Low, well-controlled levels of ROS are essential for adaptive signaling pathways, in interaction with the other gaseous flooding signals. On the other hand, excessive uncontrolled bursts of ROS can be highly damaging for plants. Therefore, a fine-tuned balance is important, with a major role for ROS production and scavenging. Our understanding of the temporal dynamics of the four gases and ROS is basal, whereas it is likely that they form a signature readout of prevailing flooding conditions and subsequent adaptive responses.

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“…The genomic complexity of plants allows the expression of thousands of genes for physiological functions, along with an increased range of gene functionalities through PTMs to alter the structure of existing proteins. In both plant and animal systems, NO‐mediated PTMs are observed, which result in S ‐nitrosylation and tyrosine nitration (Corpas et al , b, Wiseman and Thurmond , Begara‐Morales et al , Sami et al ). NO exhibits signaling through S ‐nitrosylation by the addition of NO molecules to the active site of cysteine thiols within proteins to form S ‐nitrosothiols (SNOs; Anand and Stamler , Csizmok and Forman‐Kay ).…”

Section: No‐based Reactions and Protein Modificationsmentioning

confidence: 99%

Regulation of physiological aspects in plants by hydrogen sulfide and nitric oxide under challenging environment

Paul

Roychoudhury

2019

Physiologia Plantarum

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Plants are exposed to a plethora of abiotic stresses such as drought, salinity, heavy metal and temperature stresses at different stages of their life cycle, from germination to seedling till the reproductive phase. As protective mechanisms, plants release signaling molecules that initiate a cascade of stress‐signaling events, leading either to programmed cell death or plant acclimation. Hydrogen sulfide (H2S) and nitric oxide (NO) are considered as new ‘gasotransmitter’ molecules that play key roles in regulating gene expression, posttranslational modification (PTM), as well as cross‐talk with other hormones. Although the exact role of NO in plants remains unclear and is species dependent, various studies have suggested a positive correlation between NO accumulation and environmental stress in plants. These molecules are also involved in a large array of stress responses and act synergistically or antagonistically as signaling components, depending on their respective concentration. This study provides a comprehensive update on the signaling interplay between H2S and NO in the regulation of various physiological processes under multiple abiotic stresses, modes of action and effects of exogenous application of these two molecules under drought, salt, heat and heavy metal stresses. However, the complete picture of the signaling cascades mediated by H2S and NO is still elusive. Recent researches indicate that during certain plant processes, such as stomatal closure, H2S could act upstream of NO signaling or downstream of NO in response to abiotic stresses by improving antioxidant activity in most plant species. In addition, PTMs of antioxidative pathways by these two molecules are also discussed.

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Antioxidant Systems are Regulated by Nitric Oxide-Mediated Post-translational Modifications (NO-PTMs)

Cited by 138 publications

References 89 publications

Unravelling the Roles of Nitrogen Nutrition in Plant Disease Defences

Unravelling the Roles of Nitrogen Nutrition in Plant Disease Defences

Signal Dynamics and Interactions during Flooding Stress

Regulation of physiological aspects in plants by hydrogen sulfide and nitric oxide under challenging environment

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