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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2012.06.004
|2 doi
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|a pubmed25n0729.xml
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|a (DE-627)NLM218975929
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|a (NLM)22738868
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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 Rubio-Wilhelmi, María del Mar
|e verfasserin
|4 aut
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|a Response of carbon and nitrogen-rich metabolites to nitrogen deficiency in PSARK::IPT tobacco plants
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|c 2012
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 30.11.2012
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|a Date Revised 09.01.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2012 Elsevier Masson SAS. All rights reserved.
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|a Wild type (WT) and transgenic tobacco plants expressing isopentenyltransferase (IPT), a gene coding the rate-limiting step in cytokinin (CKs) synthesis, were grown under limited nitrogen (N) conditions. Here, we analyse the possible effect of N deficiency on C-rich compounds such as phenolic compounds, as well as on N-rich compounds such as polyamines (PAs) and proline (Pro), examining the pathways involved in their synthesis and degradation. N deficiency was found to stimulate phenolic metabolism and increase these compounds both in P(SARK):IPT as well as in WT tobacco plants. This suggests that nitrate (NO(3)(-)) tissue concentration may act as a signal triggering phenolic compound accumulation in N deficiency plants. In addition, we found the maintenance of PAs in the WT plants would be correlated with the higher stress response to N deficiency. On the contrary, the reduction of free PAs and Pro found in the P(SARK)::IPT plants subjected to N deficiency would indicate the operation of an N-recycling mechanism that could stimulate a more efficient N utilization in P(SARK)::IPT plants
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Nitrates
|2 NLM
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|a Carbon
|2 NLM
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|a 7440-44-0
|2 NLM
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|a Alkyl and Aryl Transferases
|2 NLM
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|a EC 2.5.-
|2 NLM
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|a adenylate isopentenyltransferase
|2 NLM
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| 650 |
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|a EC 2.5.1.27
|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 |
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|a Sanchez-Rodriguez, Eva
|e verfasserin
|4 aut
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| 700 |
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|a Leyva, Rocio
|e verfasserin
|4 aut
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| 700 |
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|a Blasco, Begoña
|e verfasserin
|4 aut
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|a Romero, Luis
|e verfasserin
|4 aut
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| 700 |
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|a Blumwald, Eduardo
|e verfasserin
|4 aut
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|a Ruiz, Juan Manuel
|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 57(2012) vom: 18. Aug., Seite 231-7
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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|g volume:57
|g year:2012
|g day:18
|g month:08
|g pages:231-7
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|u http://dx.doi.org/10.1016/j.plaphy.2012.06.004
|3 Volltext
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