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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1111/nph.13120
|2 doi
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|a pubmed25n0810.xml
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|a (NLM)25345872
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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 Gao, Peng
|e verfasserin
|4 aut
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| 245 |
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|a Integration of trap- and root-derived nitrogen nutrition of carnivorous Dionaea muscipula
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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 04.01.2016
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|a Date Revised 20.04.2021
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|a published: Print-Electronic
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|a GENBANK: KC285589, KC513764
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|a Citation Status MEDLINE
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|a © 2014 The Authors. New Phytologist © 2014 New Phytologist Trust.
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|a Carnivorous Dionaea muscipula operates active snap traps for nutrient acquisition from prey; so what is the role of D. muscipula's reduced root system? We studied the capacity for nitrogen (N) acquisition via traps, and its effect on plant allometry; the capacity of roots to absorb NO₃(-), NH₄(+) and glutamine from the soil solution; and the fate and interaction of foliar- and root-acquired N. Feeding D. muscipula snap traps with insects had little effect on the root : shoot ratio, but promoted petiole relative to trap growth. Large amounts of NH₄(+) and glutamine were absorbed upon root feeding. The high capacity for root N uptake was maintained upon feeding traps with glutamine. High root acquisition of NH₄(+) was mediated by 2.5-fold higher expression of the NH₄(+) transporter DmAMT1 in the roots compared with the traps. Electrophysiological studies confirmed a high constitutive capacity for NH₄(+) uptake by roots. Glutamine feeding of traps inhibited the influx of (15)N from root-absorbed (15)N/(13)C-glutamine into these traps, but not that of (13)C. Apparently, fed traps turned into carbon sinks that even acquired organic carbon from roots. N acquisition at the whole-plant level is fundamentally different in D. muscipula compared with noncarnivorous species, where foliar N influx down-regulates N uptake by roots
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a ammonium
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|a glutamine
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|a nitrogen (N) nutrition
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|a plant carnivory
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|a root : shoot integration
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|a Ammonium Compounds
|2 NLM
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|a Carbon Isotopes
|2 NLM
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| 650 |
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|a Nitrogen Isotopes
|2 NLM
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| 650 |
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|a Plant Proteins
|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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|a Loeffler, Theresa Sofi
|e verfasserin
|4 aut
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|a Honsel, Anne
|e verfasserin
|4 aut
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|a Kruse, Jörg
|e verfasserin
|4 aut
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|a Krol, Elzbieta
|e verfasserin
|4 aut
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|a Scherzer, Sönke
|e verfasserin
|4 aut
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|a Kreuzer, Ines
|e verfasserin
|4 aut
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|a Bemm, Felix
|e verfasserin
|4 aut
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|a Buegger, Franz
|e verfasserin
|4 aut
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|a Burzlaff, Tim
|e verfasserin
|4 aut
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|a Hedrich, Rainer
|e verfasserin
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|a Rennenberg, Heinz
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 205(2015), 3 vom: 15. Feb., Seite 1320-1329
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnas
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| 773 |
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|g volume:205
|g year:2015
|g number:3
|g day:15
|g month:02
|g pages:1320-1329
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|u http://dx.doi.org/10.1111/nph.13120
|3 Volltext
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|d 205
|j 2015
|e 3
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|h 1320-1329
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