Nitric oxide (NO) and phytohormones crosstalk during early plant development

Sanz, Carlos; Albertos, Pablo; Mateos, Isabel; Sánchez-Vicente, Inmaculada; Lechón, Tamara; Fernández-Marcos, María; Lorenzo, Óscar

doi:10.1093/jxb/erv213

Cited by 246 publications

(149 citation statements)

References 120 publications

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“…Interactions between NO and AUX signaling pathways are complex and need to be explored in plants exposed to water-limited environment. It is well established that both NO and AUX interplay during growth and development of plant roots [29,30]. Association of AUX with ET to regulate root morphology and development is considered a key aspect of drought tolerance in plants [31].…”

Section: No-phytohormone Cross Talk Under Drought Stressmentioning

confidence: 99%

“…Interplay between NO and GA has been reported to inluence a wide spectrum of physiological processes, including seed germination, primary root growth, and inhibition of hypocotyl elongation [8,29]. Interaction of NO with GA was observed to promote apical root growth in Triticum aestivum roots exposed to aluminum (Al) toxicity [50].…”

Section: No-phytohormone Cross Talk Under Heavy Metals Stressmentioning

confidence: 99%

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Cross Talk between Nitric Oxide and Phytohormones Regulate Plant Development during Abiotic Stresses

Nawaz¹,

Shabbir²,

Shahbaz³

et al. 2017

Phytohormones - Signaling Mechanisms and Crosstalk in Plant Development and Stress Responses

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Plants, being sessile, are concurrently exposed to various biotic and abiotic stresses. The perception of stress signals in plants involves a wide spectrum of signal transduction pathways that interact to induce tolerance against adverse environmental conditions. This functional overlapping among various stress signaling cascades also leads to the expression of genes that regulate biosynthesis or action of other hormones. Phytohormonal signals, activated by both developmental and environmental responses, play a crucial role to develop stress tolerance in plants. Nitric oxide (NO) is one of the major players in plant signaling networks. Emerging evidence supports that NO interplays with signaling pathways of auxins, gibberellins, abscisic acid, ethylene, jasmonic acid, brassinosteroids, and other plant hormones to control metabolism, growth, and development in plants. This chapter focuses on the current state of knowledge of cross talk between signaling pathways of NO and phytohormones in plants exposed to various abiotic stresses.

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Section: No-phytohormone Cross Talk Under Drought Stressmentioning

confidence: 99%

Section: No-phytohormone Cross Talk Under Heavy Metals Stressmentioning

confidence: 99%

Cross Talk between Nitric Oxide and Phytohormones Regulate Plant Development during Abiotic Stresses

Nawaz¹,

Shabbir²,

Shahbaz³

et al. 2017

Phytohormones - Signaling Mechanisms and Crosstalk in Plant Development and Stress Responses

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“…NO-auxin cross talk has been associated with numerous plant developmental responses (Freschi, 2013;Sanz et al, 2015). In wild-type tomato seedlings, RL-evoked deetiolation was accompanied by a 10-fold increase in the endogenous indole acetic acid (IAA) content (Fig.…”

Section: No Positively Interacts With Auxins During Light-driven Cotymentioning

confidence: 99%

“…Based on the intertwined NO-hormone signaling cascades described for numerous plant developmental responses (Freschi, 2013;Sanz et al, 2015), interactions between NO and plant hormones during seedling greening also might be expected. These NO-hormone cross talks might involve not only the influence of NO on phytohormone metabolism, perception, or signal transduction but also the modulation of endogenous NO levels by plant hormones (Freschi, 2013).…”

mentioning

confidence: 99%

Nitric Oxide, Ethylene, and Auxin Cross Talk Mediates Greening and Plastid Development in Deetiolating Tomato Seedlings

et al. 2016

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The transition from etiolated to green seedlings involves the conversion of etioplasts into mature chloroplasts via a multifaceted, light-driven process comprising multiple, tightly coordinated signaling networks. Here, we demonstrate that light-induced greening and chloroplast differentiation in tomato (Solanum lycopersicum) seedlings are mediated by an intricate cross talk among phytochromes, nitric oxide (NO), ethylene, and auxins. Genetic and pharmacological evidence indicated that either endogenously produced or exogenously applied NO promotes seedling greening by repressing ethylene biosynthesis and inducing auxin accumulation in tomato cotyledons. Analysis performed in hormonal tomato mutants also demonstrated that NO production itself is negatively and positively regulated by ethylene and auxins, respectively. Representing a major biosynthetic source of NO in tomato cotyledons, nitrate reductase was shown to be under strict control of both phytochrome and hormonal signals. A close NO-phytochrome interaction was revealed by the almost complete recovery of the etiolated phenotype of red light-grown seedlings of the tomato phytochrome-deficient aurea mutant upon NO fumigation. In this mutant, NO supplementation induced cotyledon greening, chloroplast differentiation, and hormonal and gene expression alterations similar to those detected in light-exposed wild-type seedlings. NO negatively impacted the transcript accumulation of genes encoding phytochromes, photomorphogenesis-repressor factors, and plastid division proteins, revealing that this free radical can mimic transcriptional changes typically triggered by phytochrome-dependent light perception. Therefore, our data indicate that negative and positive regulatory feedback loops orchestrate ethylene-NO and auxin-NO interactions, respectively, during the conversion of colorless etiolated seedlings into green, photosynthetically competent young plants.

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“…enzymes (Wang et al, 2013;Yu et al, 2014;Sanz et al, 2015;Trapet et al, 2015). Recent reports also identified S-guanylation as a stable NO-related PTM in Arabidopsis caused by 8-nitro-cyclic GMP (cGMP), which is generated by the reaction of NO with cGMP (Sawa et al, 2011.…”

Section: Nitrosylation and Nitration Of Cys And Tyr By Rnsmentioning

confidence: 99%

Update: Post-translational protein modifications in plant metabolism

2015

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ORCID ID: 0000-0001-9536-0487 (K.J.v.W.).Posttranslational modifications (PTMs) of proteins greatly expand proteome diversity, increase functionality, and allow for rapid responses, all at relatively low costs for the cell. PTMs play key roles in plants through their impact on signaling, gene expression, protein stability and interactions, and enzyme kinetics. Following a brief discussion of the experimental and bioinformatics challenges of PTM identification, localization, and quantification (occupancy), a concise overview is provided of the major PTMs and their (potential) functional consequences in plants, with emphasis on plant metabolism. Classic examples that illustrate the regulation of plant metabolic enzymes and pathways by PTMs and their cross talk are summarized. Recent large-scale proteomics studies mapped many PTMs to a wide range of metabolic functions. Unraveling of the PTM code, i.e. a predictive understanding of the (combinatorial) consequences of PTMs, is needed to convert this growing wealth of data into an understanding of plant metabolic regulation.The primary amino acid sequence of proteins is defined by the translated mRNA, often followed by Nor C-terminal cleavages for preprocessing, maturation, and/or activation. Proteins can undergo further reversible or irreversible posttranslational modifications (PTMs) of specific amino acid residues. Proteins are directly responsible for the production of plant metabolites because they act as enzymes or as regulators of enzymes. Ultimately, most proteins in a plant cell can affect plant metabolism (e.g. through effects on plant gene expression, cell fate and development, structural support, transport, etc.). Many metabolic enzymes and their regulators undergo a variety of PTMs, possibly resulting in changes in oligomeric state, stabilization/degradation, and (de)activation (Huber and Hardin, 2004), and PTMs can facilitate the optimization of metabolic flux. However, the direct in vivo consequence of a PTM on a metabolic enzyme or pathway is frequently not very clear, in part because it requires measurements of input and output of the reactions, including flux through the enzyme or pathway. This Update will start out with a short overview on the major PTMs observed for each amino acid residue (Table I), followed by a brief discussion of techniques for the characterization of protein PTMs, including determination of the localization within proteins (i.e. the specific residues) and occupancy. Challenges in dealing with multiple PTMs per protein and cross talk between PTMs will be briefly outlined. We then describe the major physiological PTMs observed in plants as well as PTMs that are nonenzymatically induced during sample preparation (Table II). Finally, this Update is completed with a number of well-studied, classical examples of the regulation of plant metabolism by PTMs, in particular for enzymes in primary metabolism (Calvin cycle, glycolysis, and respiration) and the C4 shuttle accommodating photosynthesis in C4 plants (Table III). As will be ev...

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Nitric oxide (NO) and phytohormones crosstalk during early plant development

Cited by 246 publications

References 120 publications

Cross Talk between Nitric Oxide and Phytohormones Regulate Plant Development during Abiotic Stresses

Cross Talk between Nitric Oxide and Phytohormones Regulate Plant Development during Abiotic Stresses

Nitric Oxide, Ethylene, and Auxin Cross Talk Mediates Greening and Plastid Development in Deetiolating Tomato Seedlings

Update: Post-translational protein modifications in plant metabolism

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