Nitric oxide protects against oxidative stress under heat stress in the calluses from two ecotypes of reed

Song, Lili; Ding, Wei; Zhao, Mingfeng; Sun, Bei; Zhang, Lixin

doi:10.1016/j.plantsci.2006.05.002

Cited by 221 publications

(111 citation statements)

References 41 publications

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“…In calluses of two ecotypes of reed (Phragmites communis Trin.) under heat stress, the increased activities of superoxide dismutase (SOD) and catalase (CAT) were observed when sodium nitroprusside (SNP), as an NO donor was applied (Song, Ding, Zhao, Sun, & Zhang, 2006). In seeds of alfalfa (Medicago sativa) germinated under salt stress, the increased activities of superoxide dismutase (SOD) were recorded when seeds were treated with SNP (Wang, Li, Cui, Xu, Shen, & Wang, 2012).…”

Section: Discussionmentioning

confidence: 99%

Potassium Nitrate Priming Affects the Activity of Nitrate Reductase and Antioxidant Enzymes in Tomato Germination

Lara¹,

Lira²,

Rodrigues³

et al. 2014

JAS

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Priming has been used to improve the performance of germination at the field, and potassium nitrate (KNO 3 ) is a promising compound for this purpose. The nitrate (NO 3 ) could be absorbed, being used in the metabolism of the embryo, through the enzyme nitrate reductase (NR). Besides, the priming could also activate the response of the antioxidant system, becoming the primed seeds more prepared for possible stresses. Thus, the aim of this study was to evaluate the metabolic effect of nitrate in tomato seed germination by the quantification of NR activity, and also evaluate the activity of some antioxidant enzymes as superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX). Tomato seeds were primed using solutions of polyethylene glycol (PEG 6000) -1,1MPa, 50 mM KNO 3 and PEG+KNO 3 . The variables analyzed were germination (germinability, mean germination time, mean germination rate, coefficient of variation of the germination time, uncertainty and synchrony) nitrogen, total proteins and enzymes. The germination data were analyzed using an ANOVA, comparing the averages by Scott-Knott test (P < 0.05). To analyze the nitrogen, protein and enzymatic activities, we used a Kruskal-Wallis test (P < 0.05). The results show an increase in the NR activity, as well as in the antioxidant enzymes. The germination time (t) and germination rate (v) primed in KNO 3 had a better performance compared to the other treatments. In conclusion, the observed benefits in tomato seeds primed with KNO 3 were related to the activity of the enzyme nitrate reductase in the production of nitrite/nitric oxide, which acted promoting a faster germination.

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Section: Discussionmentioning

confidence: 99%

Potassium Nitrate Priming Affects the Activity of Nitrate Reductase and Antioxidant Enzymes in Tomato Germination

Lara¹,

Lira²,

Rodrigues³

et al. 2014

JAS

View full text Add to dashboard Cite

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“…1B) suggest that ROS may be generated by heat stress, which can initiate the peroxidation and destruction of lipids with subsequent membrane damage [26]. In support of this hypothesis, it has also been determined that heat stress induced oxidative stress in plants, which caused lipid peroxidation and membrane injury [27]. These results indicate that heat is able to damage cell membranes by increasing the amount of ROS and that exposure to the heat-treatment for long periods of time may be lethal to the rice leaf.…”

Section: Thermostability Of Cell Membranes Under Heat Stressmentioning

confidence: 90%

A proteomic approach in analyzing heat‐responsive proteins in rice leaves

et al. 2007

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The present study investigated rice leaf proteome in response to heat stress. Rice seedlings were subjected to a temperature of 427C and samples were collected 12 and 24 h after treatment. Increased relative ion leakage and lipid peroxidation suggested that oxidative stress frequently was generated in rice leaves exposed to high temperature. 2-DE, coupled with MS, was used to investigate and identify heat-responsive proteins in rice leaves. In order to identify the low-abundant proteins in leaves, samples were prefractionated by 15% PEG. The PEG supernatant and the pellet fraction samples were separated by 2-DE, and visualized by silver or CBB staining. Approximately 1000 protein spots were reproducibly detected on each gel, wherein 73 protein spots were differentially expressed at least at one time point. Of these differentially expressed proteins, a total of 34 and 39 protein spots were found in the PEG supernatant and pellet fractions, respectively. Using MALDI-TOF MS, a total of 48 proteins were identified. These proteins were categorized into classes related to heat shock proteins, energy and metabolism, redox homeostasis, and regulatory proteins. The results of the present study show that a group of low molecular small heat shock proteins (sHSPs) were newly induced by heat stress. Among these sHSPs, a low molecular weight mitochondrial (Mt) sHSP was validated further by Western blot analysis. Furthermore, four differentially accumulated proteins that correspond to antioxidant enzymes were analyzed at the mRNA level, which confirmed the differential gene expression levels, and revealed that transcription levels were not completely concomitant with translation. The identification of some novel proteins in the heat stress response provides new insights that can lead to a better understanding of the molecular basis of heat-sensitivity in plants.

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“…Coordinated action between NO and plant hormones (ABA, JA, GA, CK) induce thermotolerance in plants by activating the antioxidant machinery and up-regulating the expression of genes encoding heat shock proteins [104][105][106]. Studies involving Arabidopsis mutants impaired in ABA biosynthesis (aba1-1) and signaling (abi 1-1) showed that drought and heat stress induced stomatal closure involved JA and H 2 O 2 signaling that triggered NO levels [106] and Ca 2+ and SLAC1 function [107,108].…”

Section: No-phytohormone Cross Talk Under Temperature 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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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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Nitric oxide protects against oxidative stress under heat stress in the calluses from two ecotypes of reed

Cited by 221 publications

References 41 publications

Potassium Nitrate Priming Affects the Activity of Nitrate Reductase and Antioxidant Enzymes in Tomato Germination

Potassium Nitrate Priming Affects the Activity of Nitrate Reductase and Antioxidant Enzymes in Tomato Germination

A proteomic approach in analyzing heat‐responsive proteins in rice leaves

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

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