Artículo
CONSTANS–FKBP12 interaction contributes to modulation of photoperiodic flowering in Arabidopsis
Autor/es | Serrano Bueno, Gloria
Said, Fatima E. Reyes Rodríguez, Pedro de los Lucas Reina, Eva Isabel Ortiz Marchena, M Isabel Romero Rodríguez, José María Valverde Albacete, Federico |
Departamento | Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular |
Fecha de publicación | 2020 |
Fecha de depósito | 2022-03-03 |
Publicado en |
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Resumen | Flowering time is a key process in plant development. Photoperiodic signals play a crucial role in the floral transition in Arabidopsis thaliana, and the protein CONSTANS (CO) has a central regulatory function that is ... Flowering time is a key process in plant development. Photoperiodic signals play a crucial role in the floral transition in Arabidopsis thaliana, and the protein CONSTANS (CO) has a central regulatory function that is tightly regulated at the transcriptional and post-translational levels. The stability of CO protein depends on a light-driven proteasome process that optimizes its accumulation in the evening to promote the production of the florigen FLOWERING LOCUS T (FT) and induce seasonal flowering. To further investigate the post-translational regulation of CO protein we have dissected its interactome network employing in vivo and in vitro assays and molecular genetics approaches. The immunophilin FKBP12 has been identified in Arabidopsis as a CO interactor that regulates its accumulation and activity. FKBP12 and CO interact through the CCT domain, affecting the stability and function of CO. fkbp12 insertion mutants show a delay in flowering time, while FKBP12 overexpression accelerates flowering, and these phenotypes can be directly related to a change in accumulation of FT protein. The interaction is conserved between the Chlamydomonas algal orthologs CrCO–CrFKBP12, revealing an ancient regulatory step in photoperiod regulation of plant development. |
Identificador del proyecto | BIO2014-52425-P
BIO2017-83629-R P08-AGR-03582 BIO-281 GA838317 |
Cita | Serrano Bueno, G., Said, F.E., Reyes Rodríguez, P.d.l., Lucas Reina, E.I., Ortiz Marchena, M.I., Romero Rodríguez, J.M. y Valverde Albacete, F. (2020). CONSTANS–FKBP12 interaction contributes to modulation of photoperiodic flowering in Arabidopsis. Plant Journal, 101 (6), 1287-1302. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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CONSTANS–FKBP12 interactio.pdf | 1.110Mb | [PDF] | Ver/ | |