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20250714112222.0 |
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250509s2025 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2025.109977
|2 doi
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|a pubmed25n1415.xml
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|a (DE-627)NLM388083271
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|a (NLM)40334516
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|a (PII)S0981-9428(25)00505-4
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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 Dölger, Jasper Lauritz
|e verfasserin
|4 aut
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|a The magnesium-specific uptake and translocation transporters ZmMGT10 and MGR6 are upregulated not only by magnesium deficiency but also by high potassium concentrations in maize
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|c 2025
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 23.05.2025
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|a Date Revised 23.05.2025
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2025 The Authors. Published by Elsevier Masson SAS.. All rights reserved.
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|a The antagonism between potassium (K+) and magnesium (Mg2+) is the primary cause of Mg2+ deficiency worldwide. Recent studies have demonstrated that the suppressive effect of K+ on Mg2+ uptake is significantly reduced as the K+/Mg2+ ratio increases, as both cations share non-specific cation channels. Concomitantly, the relative root/shoot translocation of Mg2+ increased. In contrast, there are indications that elevated tissue [K+] impedes the primary physiological functions of Mg2+. In this study on Zea mays L., the involvement of the only known specific Mg2+ uptake transporter ZmMGT10 and that of the translocation transporter MGR6 was examined. In a hydroponic setup, young maize plants were subjected to eight distinct K+/Mg2+ ratios. Relative RNA expression of the two transporters was examined. In a second experiment, the effect of elevated leaf [K+] on the physiological functions of Mg2+ was investigated, while uptake antagonism was avoided. The maize plants here were subjected to a sufficient Mg2+ supply and absolute deficiency under conditions of adequate and excess [K+]. The analysis included chlorophyll values, starch, and nutrient concentration. While ZmMGT10;1 was higher expressed due to K+-induced lower root [Mg+2], ZmMGT10;2 showed a higher expression at high K+ exposure, although this response was independent of root [Mg+2]. A similar response was also observed for MGR6. It was found that the physiological functions of Mg2+ were not affected by increased [K+] in the tissue. In conclusion, the higher uptake and the elevated expression of translocation transporters were identified as an adaptation strategy of maize plants to K+-induced Mg2+ deficiency
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|a Journal Article
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|a Abiotic stress
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|a Antagonism
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|a Physiological functions
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|a Plasma membrane transporters
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|a Potassium/magnesium ratio
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|a Magnesium
|2 NLM
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| 650 |
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|a I38ZP9992A
|2 NLM
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| 650 |
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|a Potassium
|2 NLM
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| 650 |
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|a RWP5GA015D
|2 NLM
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| 650 |
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|a Plant Proteins
|2 NLM
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| 650 |
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|a Cation Transport Proteins
|2 NLM
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| 700 |
1 |
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|a Sagervanshi, Amit
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pitann, Britta
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mühling, Karl Hermann
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 224(2025) vom: 23. Juli, Seite 109977
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnas
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| 773 |
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|g volume:224
|g year:2025
|g day:23
|g month:07
|g pages:109977
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|u http://dx.doi.org/10.1016/j.plaphy.2025.109977
|3 Volltext
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|h 109977
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