Induction of alternative respiratory pathway involves nitric oxide, hydrogen peroxide and ethylene under salt stress

Wang, Huahua; Huang, Junjun; Bi, Yurong

doi:10.4161/psb.5.12.13775

Cited by 15 publications

(10 citation statements)

References 18 publications

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“…H 2 O 2 , as a signaling molecule, is involved in multiple plant response to environmental stresses (Neill et al, 2003 ; Mittler et al, 2004 ; Zhang et al, 2007 ; Wang et al, 2010b ). Feng et al ( 2008 ) and Wang et al ( 2010a ) also confirmed H 2 O 2 could induce AP and AOX1 expression under chilling and salinity conditions. Recently, we studied whether H 2 O 2 is involved in the BRs-induced AOX capacity (Deng et al, 2015 ).…”

Section: Discussionmentioning

confidence: 85%

Ethylene is Involved in Brassinosteroids Induced Alternative Respiratory Pathway in Cucumber (Cucumis sativus L.) Seedlings Response to Abiotic Stress

et al. 2015

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Effects of brassinosteroids (BRs) on cucumber (Cucumis sativus L.) abiotic stresses resistance to salt, polyethylene glycol (PEG), cold and the potential mechanisms were investigated in this work. Previous reports have indicated that BRs can induce ethylene production and enhance alternative oxidase (AOX) pathway. The mechanisms whether ethylene is involved as a signal molecule which connected BR with AOX in regulating stress tolerance are still unknown. Here, we found that pretreatment with 1 μM brassinolide (BL, the most active BRs) relieved stress-caused oxidative damage in cucumber seedlings and clearly enhanced the capacity of AOX and the ethylene biosynthesis. Furthermore, transcription level of ethylene signaling biosynthesis genes including ripening-related ACC synthase1 (CSACS1), ripening-related ACC synthase2 (CSACS2), ripening-related ACC synthase3 (CSACS3), 1-aminocyclopropane-1-carboxylate oxidase1 (CSACO1), 1-aminocyclopropane-1-carboxylate oxidase2 (CSACO2), and CSAOX were increased after BL treatment. Importantly, the application of the salicylhydroxamic acid (SHAM, AOX inhibitor) and ethylene biosynthesis inhibitor aminooxyacetic acid (AOA) decreased plant resistance to environmental stress by blocking BRs-induced alternative respiration. Taken together, our results demonstrated that ethylene was involved in BRs-induced AOX activity which played important roles in abiotic stresses tolerance in cucumber seedlings.

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Section: Discussionmentioning

confidence: 85%

Ethylene is Involved in Brassinosteroids Induced Alternative Respiratory Pathway in Cucumber (Cucumis sativus L.) Seedlings Response to Abiotic Stress

et al. 2015

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“…Some previous studies proposed that the beneficial effect of CN on germination might involve the CN-insensitive pathway (Upadhyaya, Naylor & Simpson 1983;Oracz et al 2008). In addition, it has been recently demonstrated that ethylene and ROS might be involved in the stress-induced increase of the alternative pathway (Mittler 2002;Juszczuk & Rychter 2003;Ederli et al 2006;Wang, Huang & Bi 2010). Therefore, we hypothesize that CN might be involved in ethylene-induced alternative pathway under environmental stress.…”

Section: Introductionmentioning

confidence: 81%

A novel role for cyanide in the control of cucumber (Cucumis sativus L.) seedlings response to environmental stress

Zhang

Feng

et al. 2012

Plant Cell & Environment

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The effects of potassium cyanide (KCN) pretreatment on the response of cucumber (Cucumis sativus L.) plants to salt, polyethylene glycol (PEG) and cold stress were investigated in the present study. Here, we found that KCN pretreatment improved cucumber seedlings tolerance to stress conditions with maximum efficiency at a concentration of 20 mM. The results showed that pretreatment with 20 mM KCN alleviated stress-induced oxidative damage in plant cells and clearly induced the activity of alternative oxidase (AOX) and the ethylene production. Furthermore, the structures of thylakoids and mitochondria in the KCNpretreated seedlings were less damaged by the stress conditions, which maintained higher total chlorophyll content, photosynthetic rate and photosystem II (PSII) proteins levels than the control. Importantly, the addition of the AOX inhibitor salicylhydroxamic acid (1 mM; SHAM) decreased plant resistance to environmental stress and even compromised the cyanide (CN)-enhanced stress tolerance. Therefore, our findings provide a novel role of CN in plant against environmental stress and indicate that the CN-enhanced AOX might contribute to the reactive oxygen species (ROS) scavenging and the protection of photosystem by maintaining energy charge homoeostasis from chloroplast to mitochondria.

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“…AOX expression in response to various stresses has been shown independently to be mediated through ET signaling. Salt, ozone, metal, and pathogen induction of AOX was abolished in mutants of ETHYLENE RECEPTOR1 (ETR1) and/or EIN2 proteins that act upstream of EIN3/EIL1 in ET signal transduction (Simons et al, 1999;Tuominen et al, 2004;Wang et al, 2010;Keunen et al, 2015). It is unclear how the AOX transcription is regulated downstream from the ET signaling pathway, but dysfunctional MYC2 due to the absence of the functional MYB29 in the rao7 mutants could derepress EIN3/EIL1 and activate downstream ET transcriptional responses.…”

Section: Myb29 Interacts With Et Signaling Through Erf Tfsmentioning

confidence: 99%

The Transcription Factor MYB29 Is a Regulator of ALTERNATIVE OXIDASE1a

et al. 2017

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Plants sense and integrate a variety of signals from the environment through different interacting signal transduction pathways that involve hormones and signaling molecules. Using () gene expression as a model system of retrograde or stress signaling between mitochondria and the nucleus, MYB DOMAIN PROTEIN29 (MYB29) was identified as a negative regulator ( [] mutant) in a genetic screen of Arabidopsis (). mutants have increased levels of AOX1a transcript and protein compared to wild type after induction with antimycin A. A variety of genes previously associated with the mitochondrial stress response also display enhanced transcript abundance, indicating that RAO7/MYB29 negatively regulates mitochondrial stress responses in general. Meta-analysis of hormone-responsive marker genes and identification of downstream transcription factor networks revealed that MYB29 functions in the complex interplay of ethylene, jasmonic acid, salicylic acid, and reactive oxygen species signaling by regulating the expression of various ETHYLENE RESPONSE FACTOR and WRKY transcription factors. Despite an enhanced induction of mitochondrial stress response genes,/ mutants displayed an increased sensitivity to combined moderate light and drought stress. These results uncover interactions between mitochondrial retrograde signaling and the regulation of glucosinolate biosynthesis, both regulated by RAO7/MYB29. This common regulator can explain why perturbation of the mitochondrial function leads to transcriptomic responses overlapping with responses to biotic stress.

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Induction of alternative respiratory pathway involves nitric oxide, hydrogen peroxide and ethylene under salt stress

Cited by 15 publications

References 18 publications

Ethylene is Involved in Brassinosteroids Induced Alternative Respiratory Pathway in Cucumber (Cucumis sativus L.) Seedlings Response to Abiotic Stress

Ethylene is Involved in Brassinosteroids Induced Alternative Respiratory Pathway in Cucumber (Cucumis sativus L.) Seedlings Response to Abiotic Stress

A novel role for cyanide in the control of cucumber (Cucumis sativus L.) seedlings response to environmental stress

The Transcription Factor MYB29 Is a Regulator of ALTERNATIVE OXIDASE1a

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