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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2015.09.013
|2 doi
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|a pubmed24n1223.xml
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|a (DE-627)NLM253496411
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|a (NLM)26447683
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|a (PII)S0981-9428(15)30115-7
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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 Davenport, Susie
|e verfasserin
|4 aut
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|a Nitrate metabolism in tobacco leaves overexpressing Arabidopsis nitrite reductase
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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
|b cr
|2 rdacarrier
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|a Date Completed 06.09.2016
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|a Date Revised 13.12.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2015 The Authors. Published by Elsevier Masson SAS.. All rights reserved.
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|a Primary nitrogen assimilation in plants includes the reduction of nitrite to ammonium in the chloroplasts by the enzyme nitrite reductase (NiR EC:1.7.7.1) or in the plastids of non-photosynthetic organs. Here we report on a study overexpressing the Arabidopsis thaliana NiR (AtNiR) gene in tobacco plants under the control of a constitutive promoter (CERV - Carnation Etched Ring Virus). The aim was to overexpress AtNiR in an attempt to alter the level of residual nitrite in the leaf which can act as precursor to the formation of nitrosamines. The impact of increasing the activity of AtNiR produced an increase in leaf protein and a stay-green phenotype in the primary transformed AtNiR population. Investigation of the T1 homozygous population demonstrated elevated nitrate reductase (NR) activity, reductions in leaf nitrite and nitrate and the amino acids proline, glutamine and glutamate. Chlorophyl content of the transgenic lines was increased, as evidenced by the stay-green phenotype. This reveals the importance of NiR in primary nitrogen assimilation and how modification of this key enzyme affects both the nitrogen and carbon metabolism of tobacco plants
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|a Journal Article
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|a Nitrite reductase
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|a Nitrogen metabolism
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|a Senescence
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| 650 |
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|a Nitrates
|2 NLM
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| 650 |
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|a Nitrites
|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 Nitrite Reductases
|2 NLM
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| 650 |
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|a EC 1.7.-
|2 NLM
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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 Le Lay, Pascaline
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sanchez-Tamburrrino, Juan Pablo
|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 97(2015) vom: 04. Dez., Seite 96-107
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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|g volume:97
|g year:2015
|g day:04
|g month:12
|g pages:96-107
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|u http://dx.doi.org/10.1016/j.plaphy.2015.09.013
|3 Volltext
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