Photoreceptor signaling networks in plant responses to shade

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The dynamic light environment of vegetation canopies is perceived by phytochromes, cryptochromes, phototropins, and UV RESISTANCE LOCUS 8 [UVR8]. These receptors control avoidance responses to preclude exposure to limiting or excessive light and acclimation responses to cope with conditions that can...

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Detalles Bibliográficos
Autor principal: Casal, Jorge José
Formato: Artículo
Lenguaje:Inglés
Materias:
PHYTOCHROME
CRYPTOCHROME
SHADE AVOIDANCE
PHYTOCHROME INTERACTING FACTOR [PIF]
AUXIN
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo//2013casal1.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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520 |a The dynamic light environment of vegetation canopies is perceived by phytochromes, cryptochromes, phototropins, and UV RESISTANCE LOCUS 8 [UVR8]. These receptors control avoidance responses to preclude exposure to limiting or excessive light and acclimation responses to cope with conditions that cannot be avoided. The low red-far-red ratios of shade light reduce phytochrome B activity, which allows PHYTOCHROMEINTERACTING FACTORS [PIFs] to directly activate the transcription of auxin-synthesis genes, leading to shade-avoidance responses. Direct PIF interaction with DELLA proteins links gibberellin and brassinosteroid signaling to shade avoidance. Shade avoidance also requires CONSTITUTIVE PHOTOMORPHOGENESIS 1 [COP1], a target of cryptochromes, phytochromes, and UVR8. Multiple regulatory loops and the input of the circadian clock create a complex network able to respond even to subtle threats of competition with neighbors while still compensating for major environmental fluctuations such as the day-night cycles. 
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653 0 |a PHYTOCHROME 
653 0 |a CRYPTOCHROME 
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653 0 |a AUXIN 
773 |t Annual review of plant biology  |g Vol.64 (2013), p.403-427, il., grafs., tbls. 
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