Ethylene triggers salt tolerance in maize genotypes by modulating polyamine catabolism enzymes associated with H 2 O 2 production

Freitas, Valdineia Soares; Miranda, Rafael de Souza; Costa, José Hélio; Oliveira, Daniel Farias de; Paula, Stelamaris de Oliveira; Miguel, Emílio de Castro; Freire, Raquel Santiago; Prisco, José Tarquı́nio; Gomes-Filho, Enéas

doi:10.1016/j.envexpbot.2017.10.022

Cited by 69 publications

(27 citation statements)

References 55 publications

(73 reference statements)

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“…The metabolism of PAs in plants is closely connected to many other metabolic pathways. The H 2 O 2 produced by PA oxidation functions in the signal transduction process of plants during biotic and abiotic stress responses (Freitas et al, 2017; Mellidou et al, 2017), and affects stomatal closure induced by abscisic acid (ABA) (Cona et al, 2006; Tun et al, 2006; An et al, 2008). S-adenosylmethionine (SAM) in the PA biosynthetic pathway is also a precursor for ethylene synthesis (Figure 1), and studies have demonstrated that PAs synthesis competes with ethylene synthesis (Lasanajak et al, 2014).…”

Section: Distribution and Metabolism Of Pas In Plantsmentioning

confidence: 99%

Polyamine Function in Plants: Metabolism, Regulation on Development, and Roles in Abiotic Stress Responses

et al. 2019

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Polyamines (PAs) are low molecular weight aliphatic nitrogenous bases containing two or more amino groups. They are produced by organisms during metabolism and are present in almost all cells. Because they play important roles in diverse plant growth and developmental processes and in environmental stress responses, they are considered as a new kind of plant biostimulant. With the development of molecular biotechnology techniques, there is increasing evidence that PAs, whether applied exogenously or produced endogenously via genetic engineering, can positively affect plant growth, productivity, and stress tolerance. However, it is still not fully understood how PAs regulate plant growth and stress responses. In this review, we attempt to cover these information gaps and provide a comprehensive and critical assessment of the published literature on the relationships between PAs and plant flowering, embryo development, senescence, and responses to several (mainly abiotic) stresses. The aim of this review is to summarize how PAs improve plants' productivity, and to provide a basis for future research on the mechanism of action of PAs in plant growth and development. Future perspectives for PA research are also suggested.

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Section: Distribution and Metabolism Of Pas In Plantsmentioning

confidence: 99%

Polyamine Function in Plants: Metabolism, Regulation on Development, and Roles in Abiotic Stress Responses

et al. 2019

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“…Overproduction of endogenous ethylene or exogenous treatment of ethylene-releasing compounds such as ethephon or ethylene precursors such as 1-aminocyclopropane-1-carboxylic acid (ACC) increase salinity stress tolerance in various plants including Arabidopsis [47] and maize [12]. Moreover, ethylene has also been found as an essential positive mediator of salinity stress tolerance in grapevine [13], maize [12], and tomato [48]. Promising evidence of the involvement of melatonin in enhancing salinity stress tolerance by promoting MYB108A-mediated ethylene biosynthesis was also reported in grapevines [13].…”

Section: Ethylene Is a Key Modulator Of Salinity Stress Responses In mentioning

confidence: 99%

“…In addition to regulating plant growth and development, research in the past two decades has also highlighted the involvement of ethylene in regulating plant responses to various biotic and abiotic stresses [6][7][8][9]. Among different abiotic stresses, ethylene has emerged as one of the important positive mediators for salinity stress tolerance in the model plant A. thaliana as well as in many crop plants including grapevines, maize, and tomato [10][11][12][13]. Salinity stress is one of the major abiotic stresses, posing a major threat to agricultural productivity [14,15].…”

Section: Introductionmentioning

confidence: 99%

Ethylene: A Master Regulator of Salinity Stress Tolerance in Plants

et al. 2020

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Salinity stress is one of the major threats to agricultural productivity across the globe. Research in the past three decades, therefore, has focused on analyzing the effects of salinity stress on the plants. Evidence gathered over the years supports the role of ethylene as a key regulator of salinity stress tolerance in plants. This gaseous plant hormone regulates many vital cellular processes starting from seed germination to photosynthesis for maintaining the plants’ growth and yield under salinity stress. Ethylene modulates salinity stress responses largely via maintaining the homeostasis of Na+/K+, nutrients, and reactive oxygen species (ROS) by inducing antioxidant defense in addition to elevating the assimilation of nitrates and sulfates. Moreover, a cross-talk of ethylene signaling with other phytohormones has also been observed, which collectively regulate the salinity stress responses in plants. The present review provides a comprehensive update on the prospects of ethylene signaling and its cross-talk with other phytohormones to regulate salinity stress tolerance in plants.

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“…The key phytohormones orchestrating plant stress responses are abscisic acid, salicylic acid, jasmonates and ethylene and all of these phytohormones employ H 2 O 2 in their signalling cascades in an either upstream or downstream manner [ 220 ]. Putative markers of nutrient status, temperature stress and drought stress share patterns of expression with those of H 2 O 2 metabolism ( Table 2 ) and H 2 O 2 has been implicated in cold acclimation [ 221 ], salt stress responses and salt stress tolerance [ 222 , 223 , 224 ] and hypoxia stress [ 225 ]. Important targets in these responses are RBOHs [ 177 , 226 , 227 ].…”

Section: H 2 O 2 In Growth Amentioning

confidence: 99%

Hydrogen Peroxide: Its Role in Plant Biology and Crosstalk with Signalling Networks

Černý

Habánová

Berka

et al. 2018

IJMS

149

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Hydrogen peroxide (H2O2) is steadily gaining more attention in the field of molecular biology research. It is a major REDOX (reduction–oxidation reaction) metabolite and at high concentrations induces oxidative damage to biomolecules, which can culminate in cell death. However, at concentrations in the low nanomolar range, H2O2 acts as a signalling molecule and in many aspects, resembles phytohormones. Though its signalling network in plants is much less well characterized than are those of its counterparts in yeast or mammals, accumulating evidence indicates that the role of H2O2-mediated signalling in plant cells is possibly even more indispensable. In this review, we summarize hydrogen peroxide metabolism in plants, the sources and sinks of this compound and its transport via peroxiporins. We outline H2O2 perception, its direct and indirect effects and known targets in the transcriptional machinery. We focus on the role of H2O2 in plant growth and development and discuss the crosstalk between it and phytohormones. In addition to a literature review, we performed a meta-analysis of available transcriptomics data which provided further evidence for crosstalk between H2O2 and light, nutrient signalling, temperature stress, drought stress and hormonal pathways.

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Ethylene triggers salt tolerance in maize genotypes by modulating polyamine catabolism enzymes associated with H 2 O 2 production

Cited by 69 publications

References 55 publications

Polyamine Function in Plants: Metabolism, Regulation on Development, and Roles in Abiotic Stress Responses

Polyamine Function in Plants: Metabolism, Regulation on Development, and Roles in Abiotic Stress Responses

Ethylene: A Master Regulator of Salinity Stress Tolerance in Plants

Hydrogen Peroxide: Its Role in Plant Biology and Crosstalk with Signalling Networks

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