Involvement of Inositol Biosynthesis and Nitric Oxide in the Mediation of UV-B Induced Oxidative Stress

Lytvyn, Dmytro I.; Raynaud, Cécile; Yemets, А. І.; Bergounioux, Catherine; Blume, Ya. B.

doi:10.3389/fpls.2016.00430

Cited by 29 publications

(19 citation statements)

References 65 publications

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“…Furthermore, in the model plant Arabidopsis, involvement of myo-inositol metabolism with PCD and basal immunity is well demonstrated. Reduced levels of inositol can induce severe cell death and disease symptoms by suppressing/knockdown of inositol-3-phosphate synthase [ 47 ] and myo-inositol-1-phosphate synthase [ 46 ]. Wild type phenotype can be restored by feeding these inositol deficient mutants or transgenics with inositol/galactinol [ 47 , 48 , 49 ].…”

Section: Discussionmentioning

confidence: 99%

Transcriptome Analysis Identified Coordinated Control of Key Pathways Regulating Cellular Physiology and Metabolism upon Aspergillus flavus Infection Resulting in Reduced Aflatoxin Production in Groundnut

Soni

Nayak

Kumar

et al. 2020

JoF

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Aflatoxin-affected groundnut or peanut presents a major global health issue to both commercial and subsistence farming. Therefore, understanding the genetic and molecular mechanisms associated with resistance to aflatoxin production during host–pathogen interactions is crucial for breeding groundnut cultivars with minimal level of aflatoxin contamination. Here, we performed gene expression profiling to better understand the mechanisms involved in reduction and prevention of aflatoxin contamination resulting from Aspergillus flavus infection in groundnut seeds. RNA sequencing (RNA-Seq) of 16 samples from different time points during infection (24 h, 48 h, 72 h and the 7th day after inoculation) in U 4-7-5 (resistant) and JL 24 (susceptible) genotypes yielded 840.5 million raw reads with an average of 52.5 million reads per sample. A total of 1779 unique differentially expressed genes (DEGs) were identified. Furthermore, comprehensive analysis revealed several pathways, such as disease resistance, hormone biosynthetic signaling, flavonoid biosynthesis, reactive oxygen species (ROS) detoxifying, cell wall metabolism and catabolizing and seed germination. We also detected several highly upregulated transcription factors, such as ARF, DBB, MYB, NAC and C2H2 in the resistant genotype in comparison to the susceptible genotype after inoculation. Moreover, RNA-Seq analysis suggested the occurrence of coordinated control of key pathways controlling cellular physiology and metabolism upon A. flavus infection, resulting in reduced aflatoxin production.

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Section: Discussionmentioning

confidence: 99%

Transcriptome Analysis Identified Coordinated Control of Key Pathways Regulating Cellular Physiology and Metabolism upon Aspergillus flavus Infection Resulting in Reduced Aflatoxin Production in Groundnut

Soni

Nayak

Kumar

et al. 2020

JoF

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“…Moreover, we have demonstrated that plant α‐tubulin can undergo posttranslational tyrosine nitration that might be one of the hallmarks of the increased microtubular dynamics (Blume et al, ). It was also found that NO and inositol signaling pathways in plant cells can be involved in UV‐B‐triggered oxidative stress (Lytvyn et al, ). Influence of low temperatures on AFs organization in plant cells and NO involvement into this process as a signaling molecule have been not previously studied.…”

Section: Introductionmentioning

confidence: 99%

Nitric oxide modulates actin filament organization in Arabidopsis thaliana primary root cells at low temperatures

Plohovska

Krasylenko

Yemets

2018

Cell Biology International

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Cytoskeleton is gaining the increasing recognition as one of nitric oxide (NO)-downstream targets because of its involvement in plenty of NO-controlled processes in plants throughout the entire life cycle starting from seed germination to pollination as well as (a)biotic stress tolerance. It has been revealed that low temperature (+0.5°C) has an inhibitory effect on A. thaliana primary root growth and causes an anisotropic increase of epidermal cells diameter in elongation zone. Furthermore, actin filaments' organization of epidermal cells in different zones of primary roots is modulated by NO content. Thus, the exogenous NO donor (SNP) favors to actin filaments network reorganization, while both cold and NO scavenger (c-PTIO) increase its randomization. According to the data obtained, it can be assumed that not only actin filaments act as NO sensors, but NO is also involved into plant cell response on low temperatures by the signaling via such important cytoskeleton machinery as actin network.

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“…Hideg et al, 2013) including the activation of mitogen-activated protein kinase phosphatases (Besteiro and Ulm, 2013). UV-B mediated ROS production has also been linked with nitric oxide (NO) signalling (Lytvyn et al, 2016). UV-B induced NO has been linked with changes in microtubuli organisation (Krasylenko et al, 2012), which in turn can affect morphology though regulation of cell division, cell elongation and initiation of lateral growth.…”

Section: Stress Mediated Control Of Plant Architecturementioning

confidence: 99%

UV-B-induced morphological changes - an enigma.

Jansen¹,

Klem²,

Robson³

et al. 2017

UV-B Radiation and Plant Life: Molecular Biology to Ecology

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UV-B induces complex changes in plant morphology, including decreases in petiole length, leaf area and/or increases in thickness together with shorter, but more branched stems. The resulting, compact, phenotype is widely reported in the literature. Yet, major questions remain with respect to the precise phenotype, the underlying mechanism, and the functional role. Complex dose-response curves, a mixture of transient and permanent morphological changes, and distinct effects on cell and organismal development, indicate that at least two distinct UV-B phenotypes exist. One phenotype is mediated through the UV-B photoreceptor UVR8, and has been linked to, amongst others, decreases in hypocotyl length and petiole elongation. The second UV-B induced phenotype is associated with generic, oxidative plant stress, as detailed by the concept of Stress Induced Morphological Responses (SIMR). Despite differences in underlying mechanism, both UV-B responses lead to a compact phenotype. The functional role of this phenotype remains unclear, and assertions that the phenotype contributes to UV-B protection remain unproven. A key target for future research is the development of markers that distinguish the two UV-B induced phenotypes, and therefore facilitate systematic studies of their functional role and environmental relevance.

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Involvement of Inositol Biosynthesis and Nitric Oxide in the Mediation of UV-B Induced Oxidative Stress

Cited by 29 publications

References 65 publications

Transcriptome Analysis Identified Coordinated Control of Key Pathways Regulating Cellular Physiology and Metabolism upon Aspergillus flavus Infection Resulting in Reduced Aflatoxin Production in Groundnut

Transcriptome Analysis Identified Coordinated Control of Key Pathways Regulating Cellular Physiology and Metabolism upon Aspergillus flavus Infection Resulting in Reduced Aflatoxin Production in Groundnut

Nitric oxide modulates actin filament organization in Arabidopsis thaliana primary root cells at low temperatures

UV-B-induced morphological changes - an enigma.

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