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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erv474
|2 doi
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|a pubmed24n0847.xml
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|a (DE-627)NLM254157599
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|a (NLM)26516126
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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 |
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|a Perea-García, Ana
|e verfasserin
|4 aut
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|a Modulation of copper deficiency responses by diurnal and circadian rhythms 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
|b cr
|2 rdacarrier
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|a Date Completed 23.09.2016
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|a Date Revised 11.11.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a Copper homeostasis under deficiency is regulated by the SQUAMOSA PROMOTER BINDING PROTEIN-LIKE7 (SPL7) transcription factor. The daily oscillating expression of two SPL7-dependent copper deficiency markers, COPPER TRANSPORTER (COPT2) and IRON SUPEROXIDE DISMUTASE (FSD1), has been followed by quantitative PCR and in promoter:LUCIFERASE transgenic plants. Both genes showed circadian and diurnal regulation. Under copper deficiency, their expression decreased drastically in continuous darkness. Accordingly, total copper content was slightly reduced in etiolated seedlings under copper deficiency. The expression of SPL7 and its targets COPT2 and FSD1 was differently regulated in various light signalling mutants. On the other hand, increased copper levels reduced the amplitude of nuclear circadian clock components, such as GIGANTEA (GI). The alteration of copper homeostasis in the COPT1 overexpression line and spl7 mutants also modified the amplitude of a classical clock output, namely the circadian oscillation of cotyledon movements. In the spl7 mutant, the period of the oscillation remained constant. These results suggest a feedback of copper transport on the circadian clock and the integration of rhythmic copper homeostasis into the central oscillator of 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 Arabidopsis thaliana
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|a circadian clock
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|a copper deficiency
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|a copper transport
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|a diurnal rhythm
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|a heavy metals.
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|a Arabidopsis Proteins
|2 NLM
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|a COPT2 protein, Arabidopsis
|2 NLM
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|a Cation Transport Proteins
|2 NLM
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|a DNA-Binding Proteins
|2 NLM
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| 650 |
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|a SLC31 Proteins
|2 NLM
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| 650 |
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|a SPL7 protein, Arabidopsis
|2 NLM
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| 650 |
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|a Transcription Factors
|2 NLM
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| 650 |
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|a Copper
|2 NLM
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| 650 |
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|a 789U1901C5
|2 NLM
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| 650 |
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|a Superoxide Dismutase
|2 NLM
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| 650 |
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|a EC 1.15.1.1
|2 NLM
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| 700 |
1 |
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|a Andrés-Bordería, Amparo
|e verfasserin
|4 aut
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| 700 |
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|a Mayo de Andrés, Sonia
|e verfasserin
|4 aut
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| 700 |
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|a Sanz, Amparo
|e verfasserin
|4 aut
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| 700 |
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|a Davis, Amanda M
|e verfasserin
|4 aut
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| 700 |
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|a Davis, Seth J
|e verfasserin
|4 aut
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| 700 |
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|a Huijser, Peter
|e verfasserin
|4 aut
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| 700 |
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|a Peñarrubia, Lola
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 67(2016), 1 vom: 20. Jan., Seite 391-403
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:67
|g year:2016
|g number:1
|g day:20
|g month:01
|g pages:391-403
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|u http://dx.doi.org/10.1093/jxb/erv474
|3 Volltext
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|h 391-403
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