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|a 10.1093/jxb/erad015
|2 doi
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|a pubmed24n1171.xml
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|a (NLM)36629282
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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 Haga, Ken
|e verfasserin
|4 aut
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| 245 |
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|a Photosensory adaptation mechanisms in hypocotyl phototropism
|b how plants recognize the direction of a light source
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|c 2023
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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
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|2 rdacarrier
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|a Date Completed 30.03.2023
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|a Date Revised 04.04.2023
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author(s) 2023. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissionsoup.com.
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|a Plants recognize the direction of a light source and exhibit phototropic responses. Physiological studies have predicted that differences in the light intensity received by the cells on the irradiated and shaded sides of a coleoptile or hypocotyl cause differences in the amounts of photoproduct. This hypothetical photoproduct appears to regulate a signaling pathway that controls cell elongation in which cells under lower light intensity elongate more than those under higher light intensity. This results in a bending growth toward a light source and has been proposed as the photoproduct-gradient model of phototropism. In this review, we summarize recent findings on the photosensory adaptation mechanisms involving a blue-light photoreceptor, phototropin1 (phot1), ROOT PHOTOTROPISM2, NONPHOTOTROPIC HYPOCOTYL3 (NPH3), and another photoreceptor family, the phytochromes. The current evidence demonstrates that, in addition to the transition of the phot1-NPH3 photoreceptor complexes to their active state, the presence of a certain population of the phot1-NPH3 complexes showing a steady state, even in a light environment, is essential for recognition of the light source direction in phototropism. This is consistent with the photoproduct-gradient model, and a dissociation state of the phot1-NPH3 complex would be considered an entity of the hypothetical photoproduct in this model
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|a Review
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a NON PHOTOTROPIC HYPOCOTYL3
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|a ROOT PHOTOTROPISM2
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|a photosensory adaptation
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|a phototropin
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|a phototropism
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|a phytochrome
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| 650 |
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|a Arabidopsis Proteins
|2 NLM
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| 700 |
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|a Sakai, Tatsuya
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 74(2023), 6 vom: 28. März, Seite 1758-1769
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:74
|g year:2023
|g number:6
|g day:28
|g month:03
|g pages:1758-1769
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|u http://dx.doi.org/10.1093/jxb/erad015
|3 Volltext
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