High Ca(2+) reverts the repression of high-affinity K(+) uptake produced by Na(+) in Solanum lycopersycum L. (var. microtom) plants

Copyright © 2015 Elsevier GmbH. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 180(2015) vom: 15. Mai, Seite 72-9
1. Verfasser: Bacha, Hayet (VerfasserIn)
Weitere Verfasser: Ródenas, Reyes, López-Gómez, Elvira, García-Legaz, Manuel Francisco, Nieves-Cordones, Manuel, Rivero, Rosa M, Martínez, Vicente, Botella, M Ángeles, Rubio, Francisco
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Calcium High-affinity K(+) uptake LeHAK5 Membrane potential Salinity Ammonium Compounds Plant Proteins Solutions mehr... Barium 24GP945V5T Sodium 9NEZ333N27 Potassium RWP5GA015D SY7Q814VUP
LEADER 01000naa a22002652 4500
001 NLM248321544
003 DE-627
005 20231224151139.0
007 cr uuu---uuuuu
008 231224s2015 xx |||||o 00| ||eng c
024 7 |a 10.1016/j.jplph.2015.03.014  |2 doi 
028 5 2 |a pubmed24n0827.xml 
035 |a (DE-627)NLM248321544 
035 |a (NLM)25901651 
035 |a (PII)S0176-1617(15)00083-8 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Bacha, Hayet  |e verfasserin  |4 aut 
245 1 0 |a High Ca(2+) reverts the repression of high-affinity K(+) uptake produced by Na(+) in Solanum lycopersycum L. (var. microtom) plants 
264 1 |c 2015 
336 |a Text  |b txt  |2 rdacontent 
337 |a ƒaComputermedien  |b c  |2 rdamedia 
338 |a ƒa Online-Ressource  |b cr  |2 rdacarrier 
500 |a Date Completed 01.02.2016 
500 |a Date Revised 07.12.2022 
500 |a published: Print-Electronic 
500 |a Citation Status MEDLINE 
520 |a Copyright © 2015 Elsevier GmbH. All rights reserved. 
520 |a Potassium (K(+)) is an essential nutrient for plants which is acquired by plant roots through the operation of specific transport systems. Abiotic stress conditions such as salinity impair K(+) nutrition because, in addition to other effects, high salt concentrations in the solution bathing the roots inhibit K(+) uptake systems. This detrimental effect of salinity is exacerbated when external K(+) is very low and the only system capable of mediating K(+) uptake is one with high-affinity for K(+), as that mediated by transporters of the HAK5 type. Increasing external Ca(2+) has been shown to improve K(+) nutrition under salinity and, although the specific mechanisms for this beneficial effect are largely unknown, they are beginning to be understood. The genes encoding the HAK5 transporters are induced by K(+) starvation and repressed by long-term exposure to high Na(+). This occurs in parallel with the hyperpolarization and depolarization of root cell membrane potential. In the present study it is shown in tomato plants that the presence of high Ca(2+) during the K(+) starvation period that leads to LeHAK5 induction, counteracts the repression exerted by high Na(+). High Ca(2+) reduces the Na(+)-induced plasma membrane depolarization of root cells, resorting one of the putative first steps in the low-K(+) signal cascade. This allows proper LeHAK5 expression and functional high-affinity K(+) uptake at the roots. Thus, the maintenance of HAK5-mediated K(+) nutrition under salinity by high Ca(2+) can be regarded as a specific beneficial effect of Ca(2+) contributing to salt tolerance in plants 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Calcium 
650 4 |a High-affinity K(+) uptake 
650 4 |a LeHAK5 
650 4 |a Membrane potential 
650 4 |a Salinity 
650 7 |a Ammonium Compounds  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a Solutions  |2 NLM 
650 7 |a Barium  |2 NLM 
650 7 |a 24GP945V5T  |2 NLM 
650 7 |a Sodium  |2 NLM 
650 7 |a 9NEZ333N27  |2 NLM 
650 7 |a Potassium  |2 NLM 
650 7 |a RWP5GA015D  |2 NLM 
650 7 |a Calcium  |2 NLM 
650 7 |a SY7Q814VUP  |2 NLM 
700 1 |a Ródenas, Reyes  |e verfasserin  |4 aut 
700 1 |a López-Gómez, Elvira  |e verfasserin  |4 aut 
700 1 |a García-Legaz, Manuel Francisco  |e verfasserin  |4 aut 
700 1 |a Nieves-Cordones, Manuel  |e verfasserin  |4 aut 
700 1 |a Rivero, Rosa M  |e verfasserin  |4 aut 
700 1 |a Martínez, Vicente  |e verfasserin  |4 aut 
700 1 |a Botella, M Ángeles  |e verfasserin  |4 aut 
700 1 |a Rubio, Francisco  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Journal of plant physiology  |d 1979  |g 180(2015) vom: 15. Mai, Seite 72-9  |w (DE-627)NLM098174622  |x 1618-1328  |7 nnns 
773 1 8 |g volume:180  |g year:2015  |g day:15  |g month:05  |g pages:72-9 
856 4 0 |u http://dx.doi.org/10.1016/j.jplph.2015.03.014  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_NLM 
912 |a GBV_ILN_350 
951 |a AR 
952 |d 180  |j 2015  |b 15  |c 05  |h 72-9