Chloroplasts modulate elongation responses to canopy shade by retrograde pathways involving HY5 and abscisic acid
Ortiz-Alcaide, Miriam (Centre de Recerca en Agrigenòmica)
Llamas, Ernesto 
(Centre de Recerca en Agrigenòmica)
Gómez-Cadenas, Aurelio (Universitat Jaume I)
Nagatani, Akira (Kyoto University)
Martínez-García, Jaime F. 
(Centre de Recerca en Agrigenòmica)
Rodríguez Concepción, Manuel 
(Centre de Recerca en Agrigenòmica)
Date: |
2019 |
Abstract: |
Plants use light as energy for photosynthesis but also as a signal of competing vegetation. Using different concentrations of norflurazon and lincomycin, we found that the response to canopy shade in Arabidopsis (Arabidopsis thaliana) was repressed even when inhibitors only caused a modest reduction in the level of photosynthetic pigments. High inhibitor concentrations resulted in albino seedlings that were unable to elongate when exposed to shade, in part due to attenuated light perception and signaling via phytochrome B and phytochrome-interacting factors. The response to shade was further repressed by a retrograde network with two separate nodes represented by the transcription factor LONG HYPOCOTYL 5 and the carotenoid-derived hormone abscisic acid. The unveiled connection among chloroplast status, light (shade) signaling, and developmental responses should contribute to achieve optimal photosynthetic performance under light-changing conditions. |
Note: |
Número d'acord de subvenció MICINN/BIO2017-84041-P |
Note: |
Número d'acord de subvenció MICINN/BIO2017-85316-R |
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Número d'acord de subvenció MICINN/BIO2017-90877-REDT |
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Número d'acord de subvenció MICINN/BIO2015-71703-REDT |
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Número d'acord de subvenció MICINN/MICINN/BIO2014-59092-P |
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Número d'acord de subvenció MICINN/BIO2014-59895-P |
Note: |
Número d'acord de subvenció MINECO/SEV-2015-0533 |
Note: |
Número d'acord de subvenció MINECO/BES-2012-052597 |
Note: |
Número d'acord de subvenció AGAUR/2017/SGR-1211 |
Note: |
Número d'acord de subvenció AGAUR/2017/SGR-710 |
Rights: |
Tots els drets reservats  |
Language: |
Anglès |
Document: |
article ; recerca ; acceptedVersion |
Published in: |
The Plant Cell, Vol. 31, issue 2 (Feb. 2019) , p. 384-398, ISSN 1040-4651 |
DOI: 10.1105/tpc.18.00617
PMID: 30705135
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Record created 2019-04-10, last modified 2020-11-07