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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2014.10.022
|2 doi
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|a pubmed24n0820.xml
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|a (DE-627)NLM246110856
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|a (NLM)25668414
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|a (PII)S0176-1617(14)00342-3
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|a DE-627
|b ger
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|e rakwb
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|a eng
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|a Wang, Zhengrui
|e verfasserin
|4 aut
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|a Hormonal interactions during cluster-root development in phosphate-deficient white lupin (Lupinus albus L.)
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|c 2015
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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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|a Date Completed 03.12.2015
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|a Date Revised 10.04.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2014 Elsevier GmbH. All rights reserved.
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|a This study addresses hormonal interactions involved in cluster-root (CR) development of phosphate (Pi)-deficient white lupin (Lupinus albus), which represents the most efficient plant strategy for root-induced mobilisation of sparingly soluble soil phosphorus (P) sources. Shoot-to-root translocation of auxin was unaffected by P-limitation, while strong stimulatory effects of external sucrose on CR formation, even in P-sufficient plants, suggest sucrose, rather than auxins, acts as a shoot-borne signal, triggering the induction of CR primordia. Ethylene may act as mediator of the sucrose signal, as indicated by moderately increased expression of genes involved in ethylene biosynthesis in pre-emergent clusters and by strong inhibitory effects of the ethylene antagonist CoCl2 on CR formation induced by sucrose amendments or P-limitation. As reported in other plants, moderately increased production of brassinosteroids (BRs) and cytokinin, in pre-emergent clusters, may be required for the formation of auxin gradients necessary for induction of CR primordia via interference with auxin biosynthesis and transport. The well-documented inhibition of root elongation by high doses of ethylene may be involved in the growth inhibition of lateral rootlets during CR maturation, indicated by a massive increased expression of gene involved in ethylene production, associated with a declined expression of transcripts with stimulatory effects (BR and auxin-related genes)
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Cluster-roots
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|a Hormonal interactions
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|a Phosphate deficiency
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|a White lupin (Lupinus albus L.)
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|a Plant Growth Regulators
|2 NLM
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|a Phosphorus
|2 NLM
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|a 27YLU75U4W
|2 NLM
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| 700 |
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|a Rahman, A B M Moshiur
|e verfasserin
|4 aut
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|a Wang, Guoying
|e verfasserin
|4 aut
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| 700 |
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|a Ludewig, Uwe
|e verfasserin
|4 aut
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| 700 |
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|a Shen, Jianbo
|e verfasserin
|4 aut
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| 700 |
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|a Neumann, Günter
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 177(2015) vom: 01. Apr., Seite 74-82
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|x 1618-1328
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|g volume:177
|g year:2015
|g day:01
|g month:04
|g pages:74-82
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|u http://dx.doi.org/10.1016/j.jplph.2014.10.022
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