Artículo
Organ-specific COP1 control of BES1 stability adjusts plant growth patterns under shade or warmth
Costigliolo Rojas, María Cecilia
; Bianchimano, Luciana
; Oh, Jeonghwa; Romero Montepaone, Sofía Iara
; Tarkowská, Dana; Minguet, Eugenio G.; Schön, Jonas; Garcia Hourquet, Mariano
; Flugel, Timo; Blázquez, Miguel A.; Choi, Giltsu; Strnad, Miroslav; Mora Garcia, Santiago
; Alabadi, David; Zurbriggen, Matias D.; Casal, Jorge José
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Fecha de publicación:
07/2022
Editorial:
Cell Press
Revista:
Developmental Cell
ISSN:
1534-5807
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Under adverse conditions such as shade or elevated temperatures, cotyledon expansion is reduced and hypocotyl growth is promoted to optimize plant architecture. The mechanisms underlying the repression of cotyledon cell expansion remain unknown. Here, we report that the nuclear abundance of the BES1 transcription factor decreased in the cotyledons and increased in the hypocotyl in Arabidopsis thaliana under shade or warmth. Brassinosteroid levels did not follow the same trend. PIF4 and COP1 increased their nuclear abundance in both organs under shade or warmth. PIF4 directly bound the BES1 promoter to enhance its activity but indirectly reduced BES1 expression. COP1 physically interacted with the BES1 protein, promoting its proteasome degradation in the cotyledons. COP1 had the opposite effect in the hypocotyl, demonstrating organ-specific regulatory networks. Our work indicates that shade or warmth reduces BES1 activity by transcriptional and post-translational regulation to inhibit cotyledon cell expansion.
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Articulos(IFEVA)
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Articulos(IIBBA)
Articulos de INST.DE INVEST.BIOQUIMICAS DE BS.AS(I)
Articulos de INST.DE INVEST.BIOQUIMICAS DE BS.AS(I)
Citación
Costigliolo Rojas, María Cecilia; Bianchimano, Luciana; Oh, Jeonghwa; Romero Montepaone, Sofía Iara; Tarkowská, Dana; et al.; Organ-specific COP1 control of BES1 stability adjusts plant growth patterns under shade or warmth; Cell Press; Developmental Cell; 57; 16; 7-2022; 2009-2025
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