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240527s2024 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2024.108768
|2 doi
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|a pubmed24n1457.xml
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|a (DE-627)NLM37285320X
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|a (NLM)38797008
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|a (PII)S0981-9428(24)00436-4
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Jiménez-Estévez, Elisa
|e verfasserin
|4 aut
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|a Increased tolerance to low K+, and to cationic stress of Arabidopsis plants by expressing the F130S mutant version of the K+ transporter AtHAK5
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|c 2024
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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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|2 rdacarrier
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|a Date Completed 15.06.2024
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|a Date Revised 01.07.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2024 The Authors. Published by Elsevier Masson SAS.. All rights reserved.
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|a Potassium (K+) selectivity of high-affinity K+ uptake systems is crucial for plant growth under low K+ and in the presence of inhibitors of K+ uptake that are toxic to plants such as Na+ or Cs+. Here, we express a mutated version of the Arabidopsis AtHAK5 high-affinity K+ transporter consisting on a change of phenylalanine 130 to serine (F130S) in athak5 akt1 double mutant plants. F130S-expressing plants show better growth, increased K+ uptake from low external concentrations and higher K+ contents when grown at low K+ (10 μM) and when grown at low K+ in the presence of Na+ (15 mM) or Cs+ (1 μM). In addition, these plants accumulate less Na+ and Cs+, resulting in lower Na+/K+ and Cs+/K+ ratios, which are important determinants of plant tolerance to salt stress and to Cs+-polluted soils. Structure analysis of AtHAK5 suggest that the F130 residue approaches the intracellular gate of the K+ tunnel of AtHAK5, affecting somehow its ionic selectivity. Modification of transport systems has a large potential to face challenges of future agriculture such as sustainable production under abiotic stress conditions imposed by climate change
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|a Journal Article
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|a Arabidopsis
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|a Cesium
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|a High-affinity K(+) transporter
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|a Potassium
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|a Selectivity
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|a Sodium
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|a Potassium
|2 NLM
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|a RWP5GA015D
|2 NLM
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|a Arabidopsis Proteins
|2 NLM
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|a potassium transporter, Arabidopsis
|2 NLM
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|a Sodium
|2 NLM
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| 650 |
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|a 9NEZ333N27
|2 NLM
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| 650 |
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|a Cation Transport Proteins
|2 NLM
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| 650 |
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|a Potassium-Hydrogen Antiporters
|2 NLM
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| 700 |
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|a Martínez-Martínez, Almudena
|e verfasserin
|4 aut
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| 700 |
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|a Amo, Jesús
|e verfasserin
|4 aut
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| 700 |
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|a Yáñez, Adrián
|e verfasserin
|4 aut
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| 700 |
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|a Miñarro, Pedro
|e verfasserin
|4 aut
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| 700 |
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|a Martínez, Vicente
|e verfasserin
|4 aut
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|a Nieves-Cordones, Manuel
|e verfasserin
|4 aut
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| 700 |
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|a Rubio, Francisco
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 212(2024) vom: 01. Juli, Seite 108768
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g volume:212
|g year:2024
|g day:01
|g month:07
|g pages:108768
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|u http://dx.doi.org/10.1016/j.plaphy.2024.108768
|3 Volltext
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