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231223s2011 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2010.09.017
|2 doi
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|a pubmed24n0686.xml
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|a (NLM)21315475
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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 Lin, Zheng-He
|e verfasserin
|4 aut
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|a Root release and metabolism of organic acids in tea plants in response to phosphorus supply
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|c 2011
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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 23.06.2011
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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 Copyright © 2011 Elsevier GmbH. All rights reserved.
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|a Self-rooted, 10-month-old, uniform tea [Camellia sinensis (L.) O. Kuntze cv. Huangguanyin] plants were supplied for 17 weeks with 0, 40, 80, 160, 400, or 1000μM phosphorus (P) to investigate the effects of P supply on root citrate and malate release, the concentrations of malate and citrate and the activities of acid-metabolizing enzymes in leaves and roots. Root malate release and accumulation was induced by both 0 and 40μM P, while root citrate release and accumulation was induced only by 0μM P. Phosphorus-deficiency-induced malate and citrate release coincided with higher concentrations of root malate and citrate. The higher concentrations of malate and citrate were accompanied by increased activities of phosphoenolpyruvate carboxylase (PEPC), phosphoenolpyruvate phosphatase (PEPP), citrate synthase (CS) and NAD-malic enzyme (NAD-ME) and decreased activities of pyruvate kinase (PK), NADP-ME and NADP-isocitrate dehydrogenase (NADP-IDH) in roots. In contrast to roots, malate accumulated in the leaves only in response to 0μM P, and no change was observed in citrate levels. The P-deficiency-induced leaf malate accumulation coincided with increased activities of NADP-ME, NAD-ME and PK. Overall, the P-deficiency-induced changes in organic acid (OA) metabolism differed between roots and leaves. The high tolerance of tea plants to P-deficiency might be involved in two major processes: (a) increasing the availability of P by inducing root release of OA anions; and (b) improving the ability to use P efficiently by inducing bypass enzymes involved in tissue P economy
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Malates
|2 NLM
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|a Phosphorus
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|a 27YLU75U4W
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|a Citric Acid
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|a 2968PHW8QP
|2 NLM
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|a malic acid
|2 NLM
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|a 817L1N4CKP
|2 NLM
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|a Isocitrate Dehydrogenase
|2 NLM
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| 650 |
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|a EC 1.1.1.41
|2 NLM
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| 650 |
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|a isocitrate dehydrogenase (NADP+)
|2 NLM
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| 650 |
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|a EC 1.1.1.42
|2 NLM
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| 650 |
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|a Citrate (si)-Synthase
|2 NLM
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| 650 |
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|a EC 2.3.3.1
|2 NLM
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| 650 |
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|a Phosphoenolpyruvate Carboxylase
|2 NLM
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| 650 |
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|a EC 4.1.1.31
|2 NLM
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| 700 |
1 |
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|a Chen, Li-Song
|e verfasserin
|4 aut
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|a Chen, Rong-Bing
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Fang-Zhou
|e verfasserin
|4 aut
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| 700 |
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|a Jiang, Huan-Xin
|e verfasserin
|4 aut
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|a Tang, Ning
|e verfasserin
|4 aut
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| 700 |
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|a Smith, Brandon R
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 168(2011), 7 vom: 01. Mai, Seite 644-52
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:168
|g year:2011
|g number:7
|g day:01
|g month:05
|g pages:644-52
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|u http://dx.doi.org/10.1016/j.jplph.2010.09.017
|3 Volltext
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|d 168
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