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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/err420
|2 doi
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|e rakwb
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|a eng
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| 100 |
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|a Kong, Xiangqiang
|e verfasserin
|4 aut
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|a Effects of non-uniform root zone salinity on water use, Na+ recirculation, and Na+ and H+ flux in cotton
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|c 2012
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 04.06.2014
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|a Date Revised 15.03.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a A new split-root system was established through grafting to study cotton response to non-uniform salinity. Each root half was treated with either uniform (100/100 mM) or non-uniform NaCl concentrations (0/200 and 50/150 mM). In contrast to uniform control, non-uniform salinity treatment improved plant growth and water use, with more water absorbed from the non- and low salinity side. Non-uniform treatments decreased Na(+) concentrations in leaves. The [Na(+)] in the '0' side roots of the 0/200 treatment was significantly higher than that in either side of the 0/0 control, but greatly decreased when the '0' side phloem was girdled, suggesting that the increased [Na(+)] in the '0' side roots was possibly due to transportation of foliar Na(+) to roots through phloem. Plants under non-uniform salinity extruded more Na(+) from the root than those under uniform salinity. Root Na(+) efflux in the low salinity side was greatly enhanced by the higher salinity side. NaCl-induced Na(+) efflux and H(+) influx were inhibited by amiloride and sodium orthovanadate, suggesting that root Na(+) extrusion was probably due to active Na(+)/H(+) antiport across the plasma membrane. Improved plant growth under non-uniform salinity was thus attributed to increased water use, reduced leaf Na(+) concentration, transport of excessive foliar Na(+) to the low salinity side, and enhanced Na(+) efflux from the low salinity root
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Sodium-Hydrogen Exchangers
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|a Water
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|a Potassium
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|2 NLM
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|a Luo, Zhen
|e verfasserin
|4 aut
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|a Dong, Hezhong
|e verfasserin
|4 aut
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|a Eneji, A Egrinya
|e verfasserin
|4 aut
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|a Li, Weijiang
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 63(2012), 5 vom: 01. März, Seite 2105-16
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:63
|g year:2012
|g number:5
|g day:01
|g month:03
|g pages:2105-16
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|u http://dx.doi.org/10.1093/jxb/err420
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