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https://hdl.handle.net/2440/43754
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dc.contributor.author | Chen, Z. | - |
dc.contributor.author | Pottosin, I. | - |
dc.contributor.author | Cuin, T. | - |
dc.contributor.author | Fuglsang, A. | - |
dc.contributor.author | Tester, M. | - |
dc.contributor.author | Jha, D. | - |
dc.contributor.author | Zepeda-Jazo, I. | - |
dc.contributor.author | Zhou, M. | - |
dc.contributor.author | Palmgren, M. | - |
dc.contributor.author | Newman, I. | - |
dc.contributor.author | Shabala, S. | - |
dc.date.issued | 2007 | - |
dc.identifier.citation | Plant Physiology, 2007; 145(4):1714-1725 | - |
dc.identifier.issn | 0032-0889 | - |
dc.identifier.issn | 1532-2548 | - |
dc.identifier.uri | http://hdl.handle.net/2440/43754 | - |
dc.description | Copyright © 2007 American Society of Plant Biologists | - |
dc.description.abstract | Plant salinity tolerance is a polygenic trait with contributions from genetic, developmental, and physiological interactions, in addition to interactions between the plant and its environment. In this study, we show that in salt-tolerant genotypes of barley (Hordeum vulgare), multiple mechanisms are well combined to withstand saline conditions. These mechanisms include: (1) better control of membrane voltage so retaining a more negative membrane potential; (2) intrinsically higher H+ pump activity; (3) better ability of root cells to pump Na+ from the cytosol to the external medium; and (4) higher sensitivity to supplemental Ca2+. At the same time, no significant difference was found between contrasting cultivars in their unidirectional 22Na+ influx or in the density and voltage dependence of depolarization-activated outward-rectifying K+ channels. Overall, our results are consistent with the idea of the cytosolic K+-to-Na+ ratio being a key determinant of plant salinity tolerance, and suggest multiple pathways of controlling that important feature in salt-tolerant plants. | - |
dc.description.statementofresponsibility | Zhonghua Chen, Igor I. Pottosin, Tracey A. Cuin, Anja T. Fuglsang, Mark Tester, Deepa Jha, Isaac Zepeda-Jazo, Meixue Zhou, Michael G. Palmgren, Ian A. Newman and Sergey Shabala | - |
dc.language.iso | en | - |
dc.publisher | Amer Soc Plant Physiologists | - |
dc.source.uri | http://dx.doi.org/10.1104/pp.107.110262 | - |
dc.subject | Cell Membrane | - |
dc.subject | Protoplasts | - |
dc.subject | Hordeum | - |
dc.subject | Plant Epidermis | - |
dc.subject | Plant Roots | - |
dc.subject | Sodium Chloride | - |
dc.subject | Potassium | - |
dc.subject | Sodium | - |
dc.subject | Sodium Radioisotopes | - |
dc.subject | Tetraethylammonium | - |
dc.subject | Potassium Channels | - |
dc.subject | Proton Pumps | - |
dc.subject | Patch-Clamp Techniques | - |
dc.subject | Adaptation, Physiological | - |
dc.subject | Membrane Potentials | - |
dc.subject | Homeostasis | - |
dc.subject | Genotype | - |
dc.subject | Salinity | - |
dc.title | Root plasma membrane transporters controlling K+/Na+ homeostasis in salt-stressed barley | - |
dc.type | Journal article | - |
dc.provenance | First published online October 26, 2007. | - |
dc.identifier.doi | 10.1104/pp.107.110262 | - |
pubs.publication-status | Published | - |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest |
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