Publication details

Study of the involvement of light components pathway (PIF4 and PhyB) in high temperature response in inflorescence of Arabidopsis thaliana

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Year of publication 2019
Type Conference abstract
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Central European Institute of Technology

Description Plants must constantly respond to changes in the environment whilst maintaining developmental and growth processes if they are to survive into the next generation. A complex network of signals from temperature and light must correctly converge to achieve successful development, through vegetative to reproductive growth. Temperature can be thought of as an environmental factor that provides both ‘inductive’ and ‘maintenance’ signals in development (L. Heggie and KJ, Halliday, 2005). Extremes of temperature represent a significant stress for plants and is a major factor limiting global plant distribution (Mittler, 2006). Many stages of flower development, particularly the late stages of stamen development, are sensitive to heat stress. Many of the temperature-regulated developmental pathways are intimately linked with light signaling. These responses are frequently mediated by manipulating the phytohormone network (L. Heggie and KJ, Halliday, 2005). The model plant, Arabidopsis thaliana, like many higher plants, responds to warmer ambient temperatures by increasing its growth rate and accelerating the floral transition. Arabidopsis is a facultative long day plant, and plants grown under short photoperiods are dramatically delayed in flowering (Halliday and Fankhauser, 2003). Interestingly, late flowering in short days can be overcome by growth at higher temperatures. Therefore, the array of light signals controlling development cannot be separated from temperature responses and hormone mediation. In this study we aim to examine the integration of these pathways in the control of a range of developmental processes including inflorescence and seed development responses in A. thaliana.
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