Blue light regulated shade avoidance

Most plants grow in dense vegetation with the risk of being out-competed by neighboring plants. These neighbors can be detected not only through the depletion in light quantity that they cause, but also through the change in light quality, which plants perceive using specific photoreceptors. Both th...

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Otros Autores: Keuskamp, Diederik H., Keller, Mercedes M., Ballaré, Carlos Luis, Pierik, Ronald
Formato: Artículo
Lenguaje:Inglés
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Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2012Keuskamp.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
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520 |a Most plants grow in dense vegetation with the risk of being out-competed by neighboring plants. These neighbors can be detected not only through the depletion in light quantity that they cause, but also through the change in light quality, which plants perceive using specific photoreceptors. Both the reduction of the red:far-red ratio and the depletion of blue light are signals that induce a set of phenotypic traits, such as shoot elongation and leaf hyponasty, which increase the likelihood of light capture in dense plant stands. This set of phenotypic responses are part of the so called "shade avoidance syndrome" [SAS]. This addendum discusses recent findings on the regulation of the SAS of Arabidopsis thaliana upon blue light depletion. Keller et al. and Keuskamp et al. show that the low blue light attenuation induced shade avoidance response of seedling and rosette-stage A. thaliana plants differ in their hormonal regulation. These studies also show there is a regulatory overlap with the R:FR-regulated SAS. 
653 0 |a CRYPTOCHROME 
653 0 |a HORMONES 
653 0 |a LIGHT 
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653 0 |a SHADE AVOIDANCE 
653 0 |a PHYTOHORMONE 
653 0 |a VISUAL PROTEINS AND PIGMENTS 
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773 |t Plant Signaling and Behavior  |g Vol.7, no.4 (2012), p.514-517 
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