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|a 10.1093/jxb/erae281
|2 doi
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|a pubmed24n1561.xml
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|a (DE-627)NLM374291578
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|a (NLM)38941269
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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 Argirò, Luca
|e verfasserin
|4 aut
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|a The Compact Root Architecture 2 systemic pathway is required for the repression of cytokinins and miR399 accumulation in Medicago truncatula N-limited plants
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|c 2024
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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
|b cr
|2 rdacarrier
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|a Date Completed 27.09.2024
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|a Date Revised 07.10.2024
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For commercial re-use, please contact reprintsoup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.
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|a Legume plants can acquire mineral nitrogen (N) either through their roots or via a symbiotic interaction with N-fixing rhizobia bacteria housed in root nodules. To identify shoot-to-root systemic signals acting in Medicago truncatula plants at N deficit or N satiety, plants were grown in a split-root experimental design in which either high or low N was provided to half of the root system, allowing the analysis of systemic pathways independently of any local N response. Among the plant hormone families analyzed, the cytokinin trans-zeatin accumulated in plants at N satiety. Cytokinin application by petiole feeding led to inhibition of both root growth and nodulation. In addition, an exhaustive analysis of miRNAs revealed that miR2111 accumulates systemically under N deficit in both shoots and non-treated distant roots, whereas a miRNA related to inorganic phosphate (Pi) acquisition, miR399, accumulates in plants grown under N satiety. These two accumulation patterns are dependent on Compact Root Architecture 2 (CRA2), a receptor required for C-terminally Encoded Peptide (CEP) signaling. Constitutive ectopic expression of miR399 reduced nodule numbers and root biomass depending on Pi availability, suggesting that the miR399-dependent Pi-acquisition regulatory module controlled by N availability affects the development of the whole legume plant root system
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|a Journal Article
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|a CEP peptide
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|a CLE peptide
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|a CRA2 receptor
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|a cytokinin
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|a legume
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|a miR399
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|a microRNA
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|a nitrogen-fixing symbiotic root nodulation
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|a phosphate
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|a MicroRNAs
|2 NLM
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|a Cytokinins
|2 NLM
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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|a Plant Proteins
|2 NLM
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|a RNA, Plant
|2 NLM
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|a Plant Growth Regulators
|2 NLM
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|a Laffont, Carole
|e verfasserin
|4 aut
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|a Moreau, Corentin
|e verfasserin
|4 aut
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|a Moreau, Carol
|e verfasserin
|4 aut
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|a Su, Yangyang
|e verfasserin
|4 aut
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|a Pervent, Marjorie
|e verfasserin
|4 aut
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|a Parrinello, Hugues
|e verfasserin
|4 aut
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|a Blein, Thomas
|e verfasserin
|4 aut
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|a Kohlen, Wouter
|e verfasserin
|4 aut
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|a Lepetit, Marc
|e verfasserin
|4 aut
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|a Frugier, Florian
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 75(2024), 18 vom: 27. Sept., Seite 5667-5680
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:75
|g year:2024
|g number:18
|g day:27
|g month:09
|g pages:5667-5680
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|u http://dx.doi.org/10.1093/jxb/erae281
|3 Volltext
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|d 75
|j 2024
|e 18
|b 27
|c 09
|h 5667-5680
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