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Título

Postharvest circadian entrainment enhances crop pest resistance and phytochemical cycling

AutorGoodspeed, D.; Liu, J. D.; Chehab, E. W.; Sheng, Z.; Francisco Candeira, Marta CSIC ORCID; Kliebenstein, D. J.; Braam, D. J.
Palabras claveGlucosinolates
Circadian clock regulation
Postharvest cabbage
Fecha de publicación2013
EditorCell Press
CitaciónCurrent Biology, 23 (13): 1- 7 (2013)
ResumenThe modular design of plants enables individual plant organs to manifest autonomous functions [1] and continue aspects of metabolism, such as respiration, even after separation from the parent plant [2]. Therefore, we hypothesized that harvested vegetables and fruits may retain capacity to perceive and respond to external stimuli. For example, the fitness advantage of plant circadian clock function is recognized [3 and 4]; however, whether the clock continues to influence postharvest physiology is unclear. Here we demonstrate that the circadian clock of postharvest cabbage (Brassica oleracea) is entrainable by light-dark cycles and results in enhanced herbivore resistance. In addition, entrainment of Arabidopsis plants and postharvest cabbage causes cyclical accumulation of metabolites that function in plant defense; in edible crops, these metabolites also have potent anticancer properties [5]. Finally, we show that the phenomena of postharvest entrainment and enhanced herbivore resistance are widespread among diverse crops. Therefore, sustained clock entrainment of postharvest crops may be a simple mechanism to promote pest resistance and nutritional value of plant-derived food.
URIhttp://hdl.handle.net/10261/86371
DOI10.1016/j.cub.2013.05.034
Identificadoresdoi: 10.1016/j.cub.2013.05.034
issn: 0960-9822
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