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Photoperiodic control of carbon distribution during the floral transition in Arabidopsis

Opened Access Photoperiodic control of carbon distribution during the floral transition in Arabidopsis

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Autor: Ortíz Marchena, M Isabel
Albi Rodríguez, Tomás
Lucas Reina, Eva
Said, Fátima E.
Romero Campero, Francisco José
Cano Ruiz, Beatriz
Ruiz, M. Teresa
Romero Rodríguez, José María
Valverde Albacete, Federico
Departamento: Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
Fecha: 2014
Publicado en: Plant Cell, 26, 565-584.
Tipo de documento: Artículo
Resumen: Flowering is a crucial process that demands substantial resources. Carbon metabolism must be coordinated with development through a control mechanism that optimizes fitness for any physiological need and growth stage of the plant. However, how sugar allocation is controlled during the floral transition is unknown. Recently, the role of a CONSTANS (CO) ortholog (Cr-CO) in the control of the photoperiod response in the green alga Chlamydomonas reinhardtii and its influence on starch metabolism was demonstrated. In this work, we show that transitory starch accumulation and glycan composition during the floral transition in Arabidopsis thaliana are regulated by photoperiod. Employing a multidisciplinary approach, we demonstrate a role for CO in regulating the level and timing of expression of the GRANULE BOUND STARCH SYNTHASE (GBSS) gene. Furthermore, we provide a detailed characterization of a GBSS mutant involved in transitory starch synthesis and analyze its flowering time phenotype in...
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Cita: Ortíz Marchena, M.I., Albi Rodríguez, T., Lucas Reina, E., Said, F.E., Romero Campero, F.J., Cano Ruiz, B.,...,Valverde Albacete, F. (2014). Photoperiodic control of carbon distribution during the floral transition in Arabidopsis. Plant Cell, 26, 565-584.
Tamaño: 527.1Kb
Formato: PDF

URI: https://hdl.handle.net/11441/69692

DOI: 10.1105/tpc.114.122721

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