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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2016.04.030
|2 doi
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|a pubmed24n0865.xml
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|a (DE-627)NLM259680974
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|a (NLM)27108206
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|a (PII)S0981-9428(16)30145-0
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Huarancca Reyes, Thais
|e verfasserin
|4 aut
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|a Effect of carbon/nitrogen ratio on carbohydrate metabolism and light energy dissipation mechanisms in Arabidopsis thaliana
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|c 2016
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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 20.03.2017
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|a Date Revised 08.04.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2016 Elsevier Masson SAS. All rights reserved.
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|a Carbon (C) and nitrogen (N) nutrient sources are essential elements for metabolism, and their availability must be tightly coordinated for the optimal growth and development in plants. Plants are able to sense and respond to different C/N conditions via specific partitioning of C and N sources and the regulation of a complex cellular metabolic activity. We studied how the interaction between C and N signaling could affect carbohydrate metabolism, soluble sugar levels, photochemical efficiency of photosystem II (PSII) and the ability to drive the excess energy in Arabidopsis seedlings under moderated and disrupted C/N-nutrient conditions. Invertase and sucrose synthase activities were markedly affected by C/N-nutrient status depending on the phosphorylation status, suggesting that these enzymes may necessarily be modulated by their direct phosphorylation or phosphorylation of proteins that form complex with them in response to C/N stress. In addition, the enzymatic activity of these enzymes was also correlated with the amount of sugars, which not only act as substrate but also as signaling compounds. Analysis of chlorophyll fluorescence in plants under disrupted C/N condition suggested a reduction of electron transport rate at PSII level associated with a higher capacity for non-radiative energy dissipation in comparison with plants under moderated C/N condition. In conclusion, the tight coordination between C and N not only affects the carbohydrates metabolism and their concentration within plant tissues, but also the partitioning of the excitation energy at PSII level between radiative (electron transport) and non-radiative (heat) dissipation pathways
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|a Journal Article
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|a C/N-nutrient
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|a Chlorophyll fluorescence
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|a Invertase
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|a Phosphorylation state
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|a Soluble sugars
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|a Sucrose synthase
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|a Isoenzymes
|2 NLM
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|a Photosystem II Protein Complex
|2 NLM
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|a Chlorophyll
|2 NLM
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|a 1406-65-1
|2 NLM
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| 650 |
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|a Carbon
|2 NLM
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| 650 |
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|a 7440-44-0
|2 NLM
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| 650 |
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Scartazza, Andrea
|e verfasserin
|4 aut
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1 |
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|a Lu, Yu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yamaguchi, Junji
|e verfasserin
|4 aut
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1 |
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|a Guglielminetti, Lorenzo
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 105(2016) vom: 01. Aug., Seite 195-202
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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|g volume:105
|g year:2016
|g day:01
|g month:08
|g pages:195-202
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|u http://dx.doi.org/10.1016/j.plaphy.2016.04.030
|3 Volltext
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