Photosynthetic activity and RAPD profile of polyethylene glycol treated B. juncea L. under nitric oxide and abscisic acid application

Sahay, Seema; Torres, Eulogio de la Cruz; Robledo-Arratia, Luis; Gupta, Meetu

doi:10.1016/j.jbiotec.2020.03.004

Cited by 16 publications

(9 citation statements)

References 51 publications

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“…When Shi et al [85] exposed the rat neuronal NO synthase (nNOS)-expressing transgenic Arabidopsis to drought, they found that the gene expression profile (184 genes upregulated and 263 downregulated) and antioxidant enzymatic activities were changed. Endogenous NO has also been found to improve the stability of genomic DNA in drought-stressed plants, such as Indian mustard [56], Brassica rapa [86], and Oryza sativa [87]. These findings highlight the importance of NO in drought stress tolerance.…”

Section: The Involvement Of No In Drought Tolerancementioning

confidence: 82%

“…In plants, increased lipid peroxidation (MDA); lipoxygenase (LOX) activity; aldehyde, proline, cysteine, and electrolyte leakage; and hydrogen peroxide (H2O2) production have been used to assess the increase of ROS production under drought [55]. Several Calvin-Benson cycle enzyme activities, such as RuBisCo, GAPDH, and phosphoribulokinase, have also been shown to be affected by drought stress [56].…”

Section: Impacts Of Drought On Plantsmentioning

confidence: 99%

“…Other drought-responsive genes involved in transportation (aquaporin (PIP) gene), lipid and sugar metabolisms, wax synthesis, cell wall regulation, and osmotic adjustment have also been reported [60]. Besides changing the gene expression, drought stress also induces genotoxic alterations, such as DNA damage and mutational events [56].…”

Section: Impacts Of Drought On Plantsmentioning

confidence: 99%

“…NO could delay leaf senescence by enhancing CAT and SOD activities and inducing the production of other enzymes, such as s-transferase, alternative oxidase, and glutathione (GSH) [91]. To mitigate oxidative damage caused by ROS, NO increases the carboxylation efficiency, regeneration capacity of RuBP, as well as ATP-sulfurylase and serine acetyltransferase activities [56]. As a signal mediator, NO is also involved in cold-and starvation-stress-induced programmed cell death in barley [92].…”

Section: The Involvement Of No In the Antioxidant Systemmentioning

confidence: 99%

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Plant Nitric Oxide Signaling under Drought Stress

Lau

Hamdan

Pua

et al. 2021

Plants

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Water deficit caused by drought is a significant threat to crop growth and production. Nitric oxide (NO), a water- and lipid-soluble free radical, plays an important role in cytoprotection. Apart from a few studies supporting the role of NO in drought responses, little is known about this pivotal molecular amendment in the regulation of abiotic stress signaling. In this review, we highlight the knowledge gaps in NO roles under drought stress and the technical challenges underlying NO detection and measurements, and we provide recommendations regarding potential avenues for future investigation. The modulation of NO production to alleviate abiotic stress disturbances in higher plants highlights the potential of genetic manipulation to influence NO metabolism as a tool with which plant fitness can be improved under adverse growth conditions.

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Section: The Involvement Of No In Drought Tolerancementioning

confidence: 82%

Section: Impacts Of Drought On Plantsmentioning

confidence: 99%

Section: Impacts Of Drought On Plantsmentioning

confidence: 99%

Section: The Involvement Of No In the Antioxidant Systemmentioning

confidence: 99%

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Plant Nitric Oxide Signaling under Drought Stress

Lau

Hamdan

Pua

et al. 2021

Plants

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“…Studies on chlorophyll (Chl) fluorescence indicated that the PSII-related reactions were either decreased (13) or increased on exposure to NO (14). Some studies have suggested that NO may protect PSII components from osmotic or salinity stress (15,16). Most of these studies were with sodium nitroprusside (SNP).…”

Section: Introductionmentioning

confidence: 99%

Modulation by S-nitrosoglutathione (a natural nitric oxide donor) of photosystem in Pisum sativum leaves, as revealed by chlorophyll fluorescence: Light-dependent aggravation of nitric oxide effects

Saini

Baptala²,

Pandey³

et al. 2023

Plant Sci. Today

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The reported effects of nitric oxide (NO), a signaling molecule, on the photochemical components of leaves are ambiguous. We examined the changes by a natural NO donor, S-nitrosoglutathione (GSNO). The effect of GSNO on Pisum sativum leaves was studied after a 3-hour exposure in dark, moderate (ML), or high light (HL). The NO levels in GSNO-treated samples were at their maximum under HL, compared to those under ML or dark. Most of the elevated NO was decreased by 2-4-carboxyphenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO), a NO scavenger, confirming the NO increase. Treatment with GSNO caused inhibition of photosynthesis/respiration and restricted electron transport mediated by both photosystem (PS)II and PSI. However, the inhibition by NO-donor of PSII components was stronger than those of PSI. A marked increase in the PSI acceptor side limitation [Y(NA)] and a decrease in PSI donor side limitation [Y(ND)] indicated an upregulation of cyclic electron transport, possibly to balance the damage to PSII by GSNO. We suggest that NO aggravated the HL-induced inhibition of photosynthesis and dark respiration.

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