Plant responses to vegetation proximity : a whole life avoiding shade
Roig Villanova, Irma (Centre de Recerca en Agrigenòmica)
Martínez-García, Jaume F. (Centre de Recerca en Agrigenòmica)

Fecha:	2016
Resumen:	In high density of vegetation, plants detect neighbors by perceiving changes in light quality through phytochrome photoreceptors. Close vegetation proximity might result in competition for resources, such as light. To face this challenge, plants have evolved two alternative strategies: to either tolerate or avoid shade. Shade-avoiding species generally adapt their development by inducing hypocotyl, stem, and petiole elongation, apical dominance and flowering, and decreasing leaf expansion and yield, a set of responses collectively known as the shade avoidance syndrome (SAS). The SAS responses have been mostly studied at the seedling stage, centered on the increase of hypocotyl elongation. After compiling the main findings about SAS responses in seedlings, this review is focused on the response to shade at adult stages of development, such as petioles of adult leaves, and the little information available on the SAS responses in reproductive tissues. We discuss these responses based on the knowledge about the molecular mechanisms and components with a role in regulating the SAS response of the hypocotyls of Arabidopsis thaliana. The transcriptional networks involved in this process, as well as the communication among the tissues that perceive the shade and the ones that respond to this stimulus will also be briefly commented.
Ayudas:	Ministerio de Economía y Competitividad BIO2014-59895-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-447
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Documento:	Article
Materia:	Shade avoidance syndrome ; Arabidopsis thaliana ; Hypocotyl ; Petiole ; Elongation ; Adult tissues ; Reproductive tissues
Publicado en:	Frontiers in plant science, Vol. 7 (Feb. 2016), art. 236, ISSN 1664-462X

10 p, 945.4 KB

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