IFEVA   02662
INSTITUTO DE INVESTIGACIONES FISIOLOGICAS Y ECOLOGICAS VINCULADAS A LA AGRICULTURA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Signal integration during shade avoidance
Autor/es:
CASAL, JORGE JOSÉ
Lugar:
Austin, Texas
Reunión:
Simposio; International Symposium on Plant Photobiology; 2015
Resumen:
Signal integration during shade avoidanceShade signals promote stem growth and initiate other shade-avoidance responses. The reduced activity of phytochrome B established by shade signals enhances both the activity of PHYTOCHROME INTERACTING FACTOR (PIF) transcription factors ‒which promote auxin synthesis‒ and the nuclear abundance of CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1). Plants are exposed to fluctuating environments, where shade can be transient or persistent, shade can take place at high or low ambient temperatures, etc. Therefore, shade-avoidance responses require signal integration at multiple levels, including the integration between PIF and COP1 pathways, the integration of dynamic shade signals over time, and the integration between shade and ambient temperature signals. We will provide insight into the molecular mechanisms of integration of different cues by the PIF/COP1 signalling network during shade avoidance.