Artículo
The timing of low R: FR exposure profoundly affects Arabidopsis branching responses
Fecha de publicación:
2014
Editorial:
Taylor & Francis
Revista:
Plant Signaling & Behavior
e-ISSN:
1559-2324
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The ratio of Red to Far Red light (R:FR) is sensed by phytochromes, including phytochrome B, and serves as a signal of potential competition. Low R:FR represses Arabidopsis thaliana branching by promoting the accumulation of abscisic acid in the young buds and by enhancing auxin signaling in the main shoot. While overall plant level branching is reduced by low R:FR, the growth of the uppermost branches tends to be promoted while the lower buds are suppressed. Buds at intermediate positions can show either growth promotion or growth suppression by low R:FR if they become exposed to low R:FR late or early, respectively. This pattern suggests that developmental stage specific programming occurs to modify the response of specific buds to branching regulators including auxin and ABA.
Palabras clave:
Branching
,
Bud
,
Arabidopsis
,
Abscisic Acid
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Articulos(IFEVA)
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Citación
Reddy, Srirama Krishna; Holalu, Srinidhi V.; Casal, Jorge Jose; Finlayson, Scott A.; The timing of low R: FR exposure profoundly affects Arabidopsis branching responses; Taylor & Francis; Plant Signaling & Behavior; 9; 5; 2014; 1-3; e28668
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