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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2018.08.016
|2 doi
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|a pubmed24n0961.xml
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|a (PII)S0176-1617(18)30305-5
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Dhiman, Sunil K
|e verfasserin
|4 aut
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|a Effects of weak static magnetic fields on the gene expression of seedlings of Arabidopsis thaliana
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|c 2018
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 17.01.2019
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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 © 2018 Elsevier GmbH. All rights reserved.
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|a Magnetic-field reception of animals and plants is currently discussed in the framework of a cryptochrome-based radical-pair mechanism. Efforts to unravel magnetoreception in plants suffered historically from several shortcomings, most prominently, the conspicuous absence of detailed stimulus-response relationships. To determine the sensitivity of seedlings of Arabidopsis thaliana to weak static magnetic fields we generated stimulus-response curves between near zero and 188 μT for the transcript levels of the genes rbcl, cab4, pal4 and ef1. The moderate magneto-responsiveness of dark-grown seedlings was greatly enhanced under blue light, and for rbcl and pal4 also under red light. The stimulus-response curves obtained under blue light of constant photon-fluence rate displayed multiple maxima and thus a pattern fundamentally different from that prevalent in plant and animal physiology. A double mutant lacking cryptochromes 1 and 2 displayed altered stimulus-response curves without losing, however, magneto-responsiveness completely. A reversal of the magnetic field direction substantially affected the gene expression and the quantity of CAB-protein (chlorophyll a,b-binding protein). The majority of our results are at variance with the notion of cryptochromes acting as the only magnetic-field sensors. They do not, however, exclude the possibility that cryptochromes participate in the magnetic field reception of Arabidopsis. The findings have the unexpected implication that cryptochrome- and phytochrome-mediated plant responses can be modulated by the strength and the orientation of the local geomagnetic field
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|a Journal Article
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|a Arabidopsis
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|a Cryptochrome
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|a Magnetic field reversal
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|a Magnetoreception
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|a Radical-pair mechanism
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|a Static magnetic field
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|a Stimulus-response relationships
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|a Galland, Paul
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 231(2018) vom: 15. Dez., Seite 9-18
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:231
|g year:2018
|g day:15
|g month:12
|g pages:9-18
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|u http://dx.doi.org/10.1016/j.jplph.2018.08.016
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