Nitric Oxide and UV-B Radiation

Yemets, А. І.; Krasylenko, Yuliya; Blume, Ya. B.

doi:10.1007/978-3-319-17804-2_9

Cited by 10 publications

(5 citation statements)

References 87 publications

(107 reference statements)

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“…As a linking regulator, the rice formin protein formin homology 5 (FH5) plays a critical role in determining plant morphology by regulating the dynamics of actin and the proper spatial organization of microtubules and microfilaments 26 . This finding implies that formin proteins act as upstream factors of actin filaments and microtubules and downstream factors of HY5 and NO 27 . There may also exist unknown factors that receive signals from UVR8/COP1/HY5 and regulate actin filaments, which may influence the rate of cell mitosis and seedling growth ( Fig.…”

Section: Discussionmentioning

confidence: 85%

Characterization of Actin Filament Dynamics during Mitosis in Wheat Protoplasts under UV-B Radiation

Chen

Han

2016

Sci Rep

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Enhanced ultraviolet-B (UV-B) radiation is caused by the thinning ozone and affects photosynthesis and crop yield. Recently, UV-B radiation has been considered as an environmental signal that regulates plant growth. Elucidating the downstream effectors in UV-B-triggered pathways is of particular interest. Previous studies have shown that actin filaments (AFs) play many roles during cell physiological processes. However, the underlying response of AFs to UV-B radiation remains unclear. In this study, wheat protoplasts were isolated from 7-d-old leaves. The dynamics of AFs during mitosis were observed under different treatments. The protoplasts were treated with UV-B radiation, cytochalasin B (CB) and jasplakinolide (JAS). Ph-FITC labelling results revealed typical actin filament structures in the control group; AFs were rearranged under UV-B radiation. AFs polymerized into bundles during interphase, the preprophase band (PPB) structure was destroyed during prophase, and the AFs gathered into plaques during metaphase in response to UV-B radiation. During anaphase and telophase, the distribution of AFs was dispersed. Pharmacologic experiments revealed that CB induced apoptosis and JAS induced nuclear division without cytokinesis in wheat protoplasts. These results indicated that AFs respond to UV-B radiation during mitosis, supplying evidence of UV-B signal transduction in plants.

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Section: Discussionmentioning

confidence: 85%

Characterization of Actin Filament Dynamics during Mitosis in Wheat Protoplasts under UV-B Radiation

Chen

Han

2016

Sci Rep

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“…Abiotic stresses provoke changes in NO levels directly or via ROS and hormonal mediation that, in turn, leads to activation of antioxidant enzymes expression and elimination of superoxide anions and lipid radicals ( Siddiqui et al, 2011 ). Nitric oxide synthase (NOS) activity was shown to be significantly increased by UV-B irradiation, suggesting that NO may act as a secondary messenger under UV-B irradiation ( Yemets et al, 2015 ). In plants, action of exogenous NO (namely, using SNP as a donor) under UV-B irradiation was shown to allow photosystem II protection and ROS scavenging ( Shi et al, 2005 ; Wang et al, 2008 ).…”

Section: Discussionmentioning

confidence: 99%

“…Notably, a number of reports provide evidence for the protective effects of NO in plants challenged with UV-B. These effects include UV-B mediated changes of NO synthase-like and nitrate reductase activity; protective action of exogenous NO donors; interrelation of NO and ROS signaling pathways; NO impact on the ROS scavenging system activity; and the role of NO in UV-B perception by plant cell (summarized in Yemets et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, NO signaling has been implicated in many fundamental cellular processes (photosynthesis, organelles motility, hypersensitive response and programmed cell death) and cross-talks have been identified between NO-signaling and numerous pathways such as cytosolic calcium signaling; cyclic adenosine diphosphate ribose and cyclic guanosine 5′-monophosphate; salicylic, jasmonic acids and ethylene; ROS signaling, namely hydrogen peroxide; and MAPK-, salicylic acid-induced protein kinases ( Yemets et al, 2015 ). Promising but totally undiscovered is the interrelation between NO and metabolic/signaling pathways related to myo -inositol derivatives.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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The involvement of NO-signaling in ultraviolet B (UV-B) induced oxidative stress (OS) in plants is an open question. Inositol biosynthesis contributes to numerous cellular functions, including the regulation of plants tolerance to stress. This work reveals the involvement of inositol-3-phosphate synthase 1 (IPS1), a key enzyme for biosynthesis of myo-inositol and its derivatives, in the response to NO-dependent OS in Arabidopsis. Homozygous mutants deficient for IPS1 (atips1) and wild-type plants were transformed with a reduction-grx1-rogfp2 and used for the dynamic measurement of UV-B-induced and SNP (sodium nitroprusside)-mediated oxidative stresses by confocal microscopy. atips1 mutants displayed greater tissue-specific resistance to the action of UV-B than the wild type. SNP can act both as an oxidant or repairer depending on the applied concentration, but mutant plants were more tolerant than the wild type to nitrosative effects of high concentration of SNP. Additionally, pretreatment with low concentrations of SNP (10, 100 µM) before UV-B irradiation resulted in a tissue-specific protective effect that was enhanced in atips1. We conclude that the interplay between nitric oxide and inositol signaling can be involved in the mediation of UV-B-initiated oxidative stress in the plant cell.

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“…Currently, there are no studies that link MET with NO in the response to high light stress, waterlogging and nutrient deficiency. However, different studies have shown that NO is involved in the tolerance to high light stress [124]. Kim et al (2010) demonstrated that NO was involved in the high light tolerance of maize (Zea mays L.) leaves of seedlings.…”

Section: General Roles Of Met In Abiotic Stress Tolerancementioning

confidence: 99%

ROS and NO Regulation by Melatonin Under Abiotic Stress in Plants

2020

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Abiotic stress in plants is an increasingly common problem in agriculture, and thus, studies on plant treatments with specific compounds that may help to mitigate these effects have increased in recent years. Melatonin (MET) application and its role in mitigating the negative effects of abiotic stress in plants have become important in the last few years. MET, a derivative of tryptophan, is an important plant-related response molecule involved in the growth, development, and reproduction of plants, and the induction of different stress factors. In addition, MET plays a protective role against different abiotic stresses such as salinity, high/low temperature, high light, waterlogging, nutrient deficiency and stress combination by regulating both the enzymatic and non-enzymatic antioxidant defense systems. Moreover, MET interacts with many signaling molecules, such as reactive oxygen species (ROS) and nitric oxide (NO), and participates in a wide variety of physiological reactions. It is well known that NO produces S-nitrosylation and NO2-Tyr of important antioxidant-related proteins, with this being an important mechanism for maintaining the antioxidant capacity of the AsA/GSH cycle under nitro-oxidative conditions, as extensively reviewed here under different abiotic stress conditions. Lastly, in this review, we show the coordinated actions between NO and MET as a long-range signaling molecule, regulating many responses in plants, including plant growth and abiotic stress tolerance. Despite all the knowledge acquired over the years, there is still more to know about how MET and NO act on the tolerance of plants to abiotic stresses.

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Nitric Oxide and UV-B Radiation

Cited by 10 publications

References 87 publications

Characterization of Actin Filament Dynamics during Mitosis in Wheat Protoplasts under UV-B Radiation

Characterization of Actin Filament Dynamics during Mitosis in Wheat Protoplasts under UV-B Radiation

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

ROS and NO Regulation by Melatonin Under Abiotic Stress in Plants

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