Nitric oxide regulates plant responses to drought, salinity, and heavy metal stress

Nabi, Rizwana Begum Syed; Tayade, Rupesh; Hussain, Adil; Kulkarni, Krishnanand P.; Imran, Qari Muhammad; Mun, Bong-Gyu; Yun, Byung‐Wook

doi:10.1016/j.envexpbot.2019.02.003

Cited by 324 publications

(165 citation statements)

References 213 publications

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“…SMF treatment increased the activity of NOS and NO production in comparison to control groups in the presence of cadmium stress (Chen et al 2011). There has been sufficient experimental confirmation supporting the role of NO under abiotic stresses in plants (Nabi et al 2019). On the other hand, very few studies are available in the literature on the involvement of NO in the seed germination and seedling growth of magnetoprimed seeds (Chen et al 2011, Patel et al 2017.…”

Section: Discussionmentioning

confidence: 99%

“…There are several evidences available in the literature indicating the involvement of NR‐dependent NO synthesis in e.g. freezing tolerance, salt stress and pathogen attack (Zhao et al , Nabi et al ). Similarly, we have also found that SMF‐priming enormously enhanced the NR activity (178% in non‐saline and 120% in saline conditions; Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Nitric oxide (NO) is a bioactive and gaseous molecule that is repeatedly identified as an important signal in seed germination process, growth, development, resistance to plant disease and responses against abiotic stresses like drought, heavy metal and salt (Asai et al , Tripathi et al , b, Ahmad et al , Arif et al , Nabi et al , Prakash et al , Sharma et al ). In several crop seeds, NO was also found to proficiently break the dormancy and increase seed germination (Bethke et al , Sarath et al , Sarath et al , Li et al ).…”

Section: Introductionmentioning

confidence: 99%

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Involvement of nitrate reductase‐dependent nitric oxide production in magnetopriming‐induced salt tolerance in soybean

Kataria

Jain

Tripathi

et al. 2019

Physiologia Plantarum

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In the present study, experiments were performed to investigate the role of nitric oxide (NO) in magnetopriming-induced seed germination and early growth characteristics of soybean (Glycine max) seedlings under salt stress. The NO donor (sodium nitroprusside, SNP), NO scavenger (2-[4-carboxyphenyl]-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, CPTIO), inhibitors of nitrate reductase (sodium tungstate, ST) or NO synthase (N-nitro-L-Arg-methyl ester, LNAME) and NADPH oxidase inhibitor (diphenylene iodonium, DPI) have been used to measure the role of NO in the alleviation of salinity stress by static magnetic field (SMF of 200 mT, 1 h). Salt stress (50 mM NaCl) significantly reduced germination and early growth of seedlings emerged from non-primed seeds. Pre-treatment of seeds with SMF positively stimulated the germination and consequently promoted the seedling growth. ST, LNAME, CPTIO and DPI significantly decreased the growth of seedling, activities of -amylase, protease and nitrate reductase (NR), hydrogen peroxide (H 2 O 2 ), superoxide (O 2•− ) and NO content in roots of seedlings emerged from non-primed and SMF-primed seeds. However, the extent of reduction was higher with ST in seedlings of SMF-primed seeds under both conditions, whereas SNP promoted all the studied parameters. Moreover, the generation of NO was also confirmed microscopically using a membrane permanent fluorochrome (4-5-diaminofluorescein diacetate [DAF-2 DA]). Further, analysis showed that SMF enhanced the NR activity and triggered the NO production and NR was maximally decreased by ST as compared to LNAME, CPTIO and DPI. Thus, in addition to ROS, NO might be one of the important signaling molecules in magnetopriming-induced salt tolerance in soybean and NR may be responsible for SMF-triggered NO generation in roots of soybean.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Involvement of nitrate reductase‐dependent nitric oxide production in magnetopriming‐induced salt tolerance in soybean

Kataria

Jain

Tripathi

et al. 2019

Physiologia Plantarum

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“…S ‐nitrosylation of proteins is involved in signaling responses to multiple abiotic stresses such as salinity, cold, drought, ozone and heavy metal toxicity, as it has been reported earlier (Camejo et al , Fancy et al ). Similarly, the attachment of the NO group to a tyrosine residue is called tyrosine nitration which is a ‘nitrosative stress marker’ in plants (Greenacre and Ischiropoulos , Corpas et al , b, Gong et al , Mata‐Pérez et al , Jahnová et al , Nabi et al ). NO also interacts with GSH to form S ‐nitrosoglutathione (GSNO), a non‐toxic and mobile form of NO that functions as key signaling molecule and regulates protein function and gene expression, contributing to fundamental processes in plants, such as development and the response to abiotic stresses (Begara‐Morales et al , Nabi et al ).…”

Section: No‐based Reactions and Protein Modificationsmentioning

confidence: 99%

“…Similarly, the attachment of the NO group to a tyrosine residue is called tyrosine nitration which is a ‘nitrosative stress marker’ in plants (Greenacre and Ischiropoulos , Corpas et al , b, Gong et al , Mata‐Pérez et al , Jahnová et al , Nabi et al ). NO also interacts with GSH to form S ‐nitrosoglutathione (GSNO), a non‐toxic and mobile form of NO that functions as key signaling molecule and regulates protein function and gene expression, contributing to fundamental processes in plants, such as development and the response to abiotic stresses (Begara‐Morales et al , Nabi et al ). Kwon et al () reported the role of AtGSNOR1 (key regulator of total cellular SNO levels) in normal growth and development by studying its impact of loss‐ and gain‐of‐function mutations.…”

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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Crops and Drought

Thabet¹,

Alqudah²

2019

Encyclopedia of Life Sciences

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Water deficit or drought is the most prevalent abiotic stress factors in the world and most detrimental for agronomic and yield, thence, economic. Crop growth at developmental stages negatively influenced by drought due to morphological damages, physiological disruptions and biochemical alternations, and, therefore, yield losses. The escalating drastic impacts of drought stress putting global crop production as well as food security at high risk. Plant crops developed different physiological and genetic mechanisms includes drought escape, avoidance and tolerance. Understanding these mechanisms can help in improving crop performance and adaptation under drought conditions. Improving drought tolerance varieties with high yield potential under such harsh stress conditions is the ultimate target of crop breeding program. Interestingly, many quantitative trait loci (QTLs) for drought stress tolerance have been detected in economically important crops, but few of them have been efficiently utilised in breeding. Key Concepts Water deficit or drought is the most prevalent abiotic stress factors in the world. Crop growth and development are adversely influenced by drought. Drought is considered as the most detrimental for agronomic and yield. Plant response to drought by morphological, physiological and biochemical mechanisims. Drought response mechanisms includes drought escape, avoidance, and tolerance. Many QTLs for drought stress tolerance have been detected. Drought tolerance is a complex and polygenic trait controlled by many genes and influenced by environments.

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Nitric oxide regulates plant responses to drought, salinity, and heavy metal stress

Cited by 324 publications

References 213 publications

Involvement of nitrate reductase‐dependent nitric oxide production in magnetopriming‐induced salt tolerance in soybean

Involvement of nitrate reductase‐dependent nitric oxide production in magnetopriming‐induced salt tolerance in soybean

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

Crops and Drought

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