Phytochrome B integrates light and temperature signals in Arabidopsis

Mostrar otras versiones (1)

Ambient temperature regulates many aspects of plant growth and development, but its sensors are unknown. Here, we demonstrate that the phytochrome B (phyB) photoreceptor participates in temperature perception through its temperature-dependent reversion from the active Pfr state to the inactive Pr st...

Descripción completa

Guardado en:
Detalles Bibliográficos
Otros Autores: Legris, Martina, Klose, Cornelia, Sethe Burgie, E., Costigliolo Rojas, Cecilia, Neme, Maximiliano, Hiltbrunner, Andreas, Wigge, Philip A., Schäfer, Eberhard, Vierstra, Richard D., Casal, Jorge José
Formato: Artículo
Lenguaje:Inglés
Materias:
DIMER
PHYTOCHROME B
ARABIDOPSIS PROTEIN
PHYB PROTEIN
ARABIDOPSIS
VISUAL PROTEINS AND PIGMENTS
CELL NUCLEUS
HOT TEMPERATURE
LIGHT
MUTATION
PHOTORECEPTORS, PLANT
PHYTOCHROME B
SEEDLINGS
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2016legris.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
Descripción
Sumario:Ambient temperature regulates many aspects of plant growth and development, but its sensors are unknown. Here, we demonstrate that the phytochrome B (phyB) photoreceptor participates in temperature perception through its temperature-dependent reversion from the active Pfr state to the inactive Pr state. Increased rates of thermal reversion upon exposing Arabidopsis seedlings to warm environments reduce both the abundance of the biologically active Pfr-Pfr dimer pool of phyB and the size of the associated nuclear bodies, even in daylight. Mathematical analysis of stem growth for seedlings expressing wild-type phyB or thermally stable variants under various combinations of light and temperature revealed that phyB is physiologically responsive to both signals.We therefore propose that in addition to its photoreceptor functions, phyB is a temperature sensor in plants.
ISSN:1095-9203

Ejemplares similares