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231225s2017 xx |||||o 00| ||eng c |
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7 |
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|a 10.1111/nph.14731
|2 doi
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|a pubmed25n0916.xml
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|a (DE-627)NLM275060977
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|a (NLM)28833172
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Eggert, Kai
|e verfasserin
|4 aut
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| 245 |
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|a Response of the plant hormone network to boron deficiency
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|c 2017
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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 01.06.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2017 The Authors. New Phytologist © 2017 New Phytologist Trust.
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|a Plant hormones (PH) adjust plant growth to environmental conditions such as nutrient availability. Although responses of individual PHs to growth-determining nutrient supplies have been reported, little is known about simultaneous dynamics in the metabolism of different PH species. Brassica napus seedlings were grown under increasing supply of B, and LC-MS/MS was used to characterize bioactive forms of different PH species together with several of their precursors, storage and inactivated forms. Increasing shoot B concentrations in response to B supply were accompanied by decreasing concentrations of abscisic acid (ABA) and indole-3-acetic acid (IAA), which appeared to be synthesized under B deficiency mainly via indole-3-acetonitrile (IAN). By contrast, shoot B concentrations correlated closely with cytokinins, and the B-dependent growth response appeared to be triggered primarily by de-novo synthesis of cytokinins and by re-routing less active towards highly active forms of cytokinin. Also gibberellin biosynthesis strongly increased with B supply, in particular gibberellin species from the non-13-hydroxylation pathway. The brassinosteroid castasterone appeared to support shoot growth primarily at suboptimal B nutrition. These results indicate that a variable B nutritional status causes coordinated changes in PH metabolism as prerequisite for an adjusted growth response
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|a Journal Article
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|a HR-ICP-MS
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|a boron (B) starvation
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|a hormone metabolism
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|a nutrient deficiency
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|a oilseed rape (Brassica napus)
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|a phytohormone
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4 |
|a salicylic acid (SA)
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| 650 |
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|a Cholestanols
|2 NLM
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| 650 |
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7 |
|a Cytokinins
|2 NLM
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| 650 |
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|a Gibberellins
|2 NLM
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| 650 |
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|a Indoleacetic Acids
|2 NLM
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| 650 |
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|a Plant Growth Regulators
|2 NLM
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| 650 |
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7 |
|a indoleacetic acid
|2 NLM
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| 650 |
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7 |
|a 6U1S09C61L
|2 NLM
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| 650 |
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7 |
|a Abscisic Acid
|2 NLM
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| 650 |
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7 |
|a 72S9A8J5GW
|2 NLM
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| 650 |
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|a castasterone
|2 NLM
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| 650 |
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|a 80736-41-0
|2 NLM
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| 650 |
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|a Boron
|2 NLM
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| 650 |
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7 |
|a N9E3X5056Q
|2 NLM
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| 700 |
1 |
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|a von Wirén, Nicolaus
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t The New phytologist
|d 1989
|g 216(2017), 3 vom: 01. Nov., Seite 868-881
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
1 |
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|g volume:216
|g year:2017
|g number:3
|g day:01
|g month:11
|g pages:868-881
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| 856 |
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|u http://dx.doi.org/10.1111/nph.14731
|3 Volltext
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