Modification of plasma membrane proton pumps in cucumber roots as an adaptation mechanism to salt stress

Janicka, Małgorzata; Kabała, Katarzyna; Wdowikowska, Anna; Kłobus, Grażyna

doi:10.1016/j.jplph.2013.02.002

Cited by 53 publications

(19 citation statements)

References 57 publications

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“…Hence changes in the functioning of the H + -ATPase under salinity would influence both passive and active Na + and Cl À transport. Osmotic stress, including from NaCl, increases the coupling ratio (that is more proton efflux per ATP hydrolysed) of the H + -ATPase (Kerkeb et al, 2002;Janicka-Russak et al, 2013). This would decrease the energy requirement for proton-mediated secondary active transport without increasing the inward gradient for passive Na + entry.…”

Section: Transport Of Na + and CL à From Soil To Leafmentioning

confidence: 99%

Energy costs of salt tolerance in crop plants

et al. 2019

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Agricultureisexpandingintoregionsthatareaffectedbysalinity.Thisreviewconsiderstheenergetic costs of salinity tolerance in crop plants and provides a framework for a quantitative assessment of costs. Different sources of energy, and modifications of root system architecture that would maximize water vs ion uptake are addressed. Energy requirements for transport of salt (NaCl) to leaf vacuoles for osmotic adjustment could be small if there are no substantial leaks back across plasma membrane and tonoplast in root and leaf. The coupling ratio of the H +-ATPase also is a critical component. One proposed leak, that of Na + influx across the plasma membrane through certain aquaporin channels, might be coupled to water flow, thus conserving energy. For the tonoplast, control of two types of cation channels is required for energy efficiency. Transporters controlling the Na + and Cl À concentrations in mitochondria and chloroplasts are largely unknown and could be a major energy cost. The complexity of the system will require a sophisticated modelling approach to identify critical transporters, apoplastic barriers and root structures. This modelling approach will informexperimentationandallowaquantitativeassessmentoftheenergycostsofNaCltoleranceto guide breeding and engineering of molecular components.

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Section: Transport Of Na + and CL à From Soil To Leafmentioning

confidence: 99%

Energy costs of salt tolerance in crop plants

et al. 2019

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“…Conflicting reports have appeared regarding changes in PM H + -ATPase protein levels during salt stress in plants (Monneuse et al, 2011;Zhang et al, 2012), but recent evidence suggests that rapid posttranslational activation of the PM H + -ATPase contributes to salt tolerance in halophytic species (Bose et al, 2015). Indeed, salt stress induces phosphorylation and 14-3-3 protein binding to the pump (Janicka-Russak et al, 2013).…”

Section: Posttranslational Regulation Of Pm H + -Atpases Regulate Ionmentioning

confidence: 99%

Plasma Membrane H + -ATPase Regulation in the Center of Plant Physiology

et al. 2016

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The plasma membrane (PM) H(+)-ATPase is an important ion pump in the plant cell membrane. By extruding protons from the cell and generating a membrane potential, this pump energizes the PM, which is a prerequisite for growth. Modification of the autoinhibitory terminal domains activates PM H(+)-ATPase activity, and on this basis it has been hypothesized that these regulatory termini are targets for physiological factors that activate or inhibit proton pumping. In this review, we focus on the posttranslational regulation of the PM H(+)-ATPase and place regulation of the pump in an evolutionary and physiological context. The emerging picture is that multiple signals regulating plant growth interfere with the posttranslational regulation of the PM H(+)-ATPase.

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“…Salinity is a major abiotic stress that acutely affects crop productivity (Ahmad et al 2013) through osmotic stress, alters metabolism, and disrupts plant physiology through the accumulation of osmolytes, ionic toxicity (Munns 2002), protein dysfunction (Janicka-Russak et al 2013), and causes electrolyte leakage and eventually death of a tissue (Ali et al 2008). Salinity induced oxidative stress, triggering the production of reactive oxygen species that causes severe damage to plant cells.…”

Section: Introductionmentioning

confidence: 99%

Regulation of Growth and Physiological traits of Cucumber (Cucumis sativus L.) through various levels of 28-Homobrassinolide under salt stress conditions

et al. 2017

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Brassinoids are plant steroidal hormones that are ubiquitous in the plant kingdom and regulate a wide range of physiological and stress responses. In a plastic tunnel pot bioassay experiment, three levels of 28-homobrassinolide (HBL) at 1, 3, and 5 μmol L −1 were tested for growth and physiological attributes of cucumber cultivars 'Jinyou 1' (salt-sensitive) and 'Changchun Mici' (salt-tolerant), grown at various salt stress conditions (60 and 120 mmol L −1). Cucumber plants of both cultivars subjected to salt stress exhibited reduced growth attributes and altered antioxidant enzymes at 60 and 120 mmol L −1. However, the deleterious effects of salt stress were partially improved by HBL. The foliar application of HBL enhanced shoot and root fresh and dry weight and chlorophyll content at 60 and 120 mmol L −1 NaCl stress in 'Jinyou 1' and 'Changchun Mici', respectively. Homobrassinolide application also altered the antioxidant enzyme levels by increasing super oxide dismutase and peroxidase levels and decreased malondialdehyde content under 60 and 120 mmol L −1 stress in both plant cultivars. Overall results showed that HBL could enhance growth attributes, chlorophyll content, and antioxidant enzymes for both of the cultivars under mild and high NaCl stress.

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Modification of plasma membrane proton pumps in cucumber roots as an adaptation mechanism to salt stress

Cited by 53 publications

References 57 publications

Energy costs of salt tolerance in crop plants

Energy costs of salt tolerance in crop plants

Plasma Membrane H + -ATPase Regulation in the Center of Plant Physiology

Regulation of Growth and Physiological traits of Cucumber (Cucumis sativus L.) through various levels of 28-Homobrassinolide under salt stress conditions

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