Cross-talk between nitric oxide and hydrogen peroxide in plant responses to abiotic stresses

Qiao, Weihua; Li, Chaonan; Fan, Liu‐Min

doi:10.1016/j.envexpbot.2013.12.014

Cited by 110 publications

(61 citation statements)

References 151 publications

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“…Intracellular Ca 2+ increases were reported to be a consequence of an uptake from the extracellular space or due to Ca 2+ liberation from intracellular stores. Therefore, NO Results of the present study show that NO and H 2 O 2 mediate SO 2 toxicity via Ca 2+ -dependent pathway, which is consistent with previous reports showing that NO and H 2 O 2 act via Ca 2+ signaling pathways in plants responding to abiotic stress (Pei et al 2000;Qiao and Fan 2014;Niu and Liao 2016). These results will broaden our understanding on how plants respond to environmental stress.…”

Section: Discussionsupporting

confidence: 92%

“…SO 2 exposure increased NO and H 2 O 2 levels in V. faba guard cells. Elevated levels of H 2 O 2 and NO can provoke both beneficial and harmful effects in plants responding to abiotic environmental stresses (Besson-Bard et al 2009;Arasimowicz and Floryszak-Wieczorek 2007;Qiao and Fan 2014;Rodríguez-Serrano et al 2012;Jeandroz et al 2013;Yi et al 2014). We have shown previously that an increased H 2 O 2 level mediates SO 2 toxicity in stomatal guard cells of V. faba .…”

Section: Discussionmentioning

confidence: 93%

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NO and H2O2 contribute to SO2 toxicity via Ca2+ signaling in Vicia faba guard cells

Bai

Xue

et al. 2017

Environ Sci Pollut Res

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NO and H 2 O 2 have been implicated as important signals in biotic and abiotic stress responses of plants to the environment. Previously, we have shown that SO 2 exposure increased the levels of NO and H 2 O 2 in plant cells. We hypothesize that, as signaling molecules, NO and H 2 O 2 mediate SO 2 -caused toxicity. In this paper, we show that SO 2 hydrates caused guard cell death in a concentration-dependent manner in the concentration range of 0.25 to 6 mmol L −1 , which was associated with elevation of intracellular NO, H 2 O 2 , and Ca 2+ levels in Vicia faba guard cells. NO donor SNP enhanced SO 2 toxicity, while NO scavenger c-PTIO and NO synthesis inhibitors L-NAME and tungstate significantly prevented SO 2 toxicity. ROS scavenger ascorbic acid (AsA) and catalase (CAT), Ca 2+ chelating agent EGTA, and Ca 2+ channel inhibitor LaCl 3 also markedly blocked SO 2 toxicity. In addition, both c-PTIO and AsA could completely block SO 2 -induced elevation of intracellular Ca 2+ level. Moreover, c-PTIO efficiently blocked SO 2 -induced H 2 O 2 elevation, and AsA significantly blocked SO 2 -induced NO elevation. These results indicate that extra NO and H 2 O 2 are produced and accumulated in SO 2 -treated guard cells, which further activate Ca 2+ signaling to mediate SO 2 toxicity. Our findings suggest that both NO and H 2 O 2 contribute to SO 2 toxicity via Ca 2+ signaling.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 93%

NO and H2O2 contribute to SO2 toxicity via Ca2+ signaling in Vicia faba guard cells

Bai

Xue

et al. 2017

Environ Sci Pollut Res

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“…NO is closely connected with ROS, which can be cytotoxic or cytoprotective, depending on their concentrations. On balance, the equilibrium between NO and ROS could determine the final result and NO plays a positive role in stress responses via cross-talk with ROS (Qiao et al 2014). According to Silveira et al (2003), H 2 O 2 is mainly responsible for the DCFH oxidation.…”

Section: Discussionmentioning

confidence: 98%

The time course of NO involved in ABA pathway to improve drought tolerance in Oxytropis ochrocephala Bunge

Chen

et al. 2015

Acta Physiol Plant

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Oxytropis ochrocephala Bunge is a poisonous legume plant which exhibits drought acclimation behavior and spreads rapidly under adverse environment. This study demonstrates that the stress signals including NO (nitric oxide), ABA (abscisic acid), and H 2 O 2 (Hydrogen peroxide) are involved in roots of O. ochrocephala seedlings when exposed to drought stress simulated by PEG-6000 solution. The relationship among these signals was investigated by using exogenous and endogenous modulators.The results indicate that a time course of NO is accumulated in roots of O. ochrocephala in response to drought stress, which is generated enzymatically by nitrate reductase (NR) activity. The low level of NO acts as a downstream signaling of ABA and is involved with H 2 O 2 signaling cascade. There is a regulatory mechanism of controlling NO concentration and maintaining the equilibrium state between ROS (reactive oxygen species) and NO, which modulates the root cell vitality, and osmotic adjustment thus improves root growth and developmental processes under drought stress.

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“…In addition, the down regulation observed in lettuce POD activity can be related to the inhibition of the enzyme. The presence of pathogens or xenobiotic substances (such as heavy metals and toxins) in plants stimulates higher production of compounds like nitric oxide and hydrogen peroxide, which are capable of inhibiting peroxidase and catalase activities (Clark et al 2000;Qiao et al 2014;Chia et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Selective membrane permeability and peroxidase activity response of lettuce and arugula irrigated with cyanobacterial-contaminated water

et al. 2015

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Irrigation with microcystins-contaminated water has been shown to cause oxidative stress and negatively affect the development of vegetables. However, the effect of non-microcystins producing cyanobacteria on vegetables is yet to be investigated. In this study, the effects of microcystin-producing (MC?) and non-microcystin-producing (MC-) cyanobacterial (Microcystis aeruginosa) extracts on lettuce (Lactuca sativa L.) and arugula (Eruca sativa Mill.) were investigated. Chlorophyll production, peroxidase (POD) activity and selective membrane permeability of the vegetables were monitored after exposure to 0.6-12.5 lg L -1 MC? for 15 days. For MC-extracts, an equivalent biomass of each MC? extract concentration per total MCs concentration was also applied to the vegetables for 15 days. In arugula, exposure to both toxic and non-toxic cyanobacterial extracts resulted in higher POD activity than the control. However, in lettuce plants, significantly lower POD activities were recorded in the presence of MC? and MC-extracts. Although both crude (MC? and MC-) extracts increased plasma membrane electrical conductivity of the vegetables, the effect of MC? extract was higher. Chlorophyll content of both vegetables was not significantly influenced by MC? and MC-extracts. The results of the present study show that vegetables have variable responses to MC? and MC-extracts of M. aeruginosa. Therefore, care must be taken to avoid the excessive use of M. aeruginosa contaminated water to irrigate vegetables, regardless of their MCs production potential.

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Cross-talk between nitric oxide and hydrogen peroxide in plant responses to abiotic stresses

Cited by 110 publications

References 151 publications

NO and H2O2 contribute to SO2 toxicity via Ca2+ signaling in Vicia faba guard cells

NO and H2O2 contribute to SO2 toxicity via Ca2+ signaling in Vicia faba guard cells

The time course of NO involved in ABA pathway to improve drought tolerance in Oxytropis ochrocephala Bunge

Selective membrane permeability and peroxidase activity response of lettuce and arugula irrigated with cyanobacterial-contaminated water

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