Analysis of the circadian clock and its role in scent emission in Antirrhinum majus and Petunia hybrida
Author
Terry López, Marta IsabelDirector/a
Weiss, Julia Rosl; Egea Gutiérrez-Cortines, MarcosCenter
Escuela Internacional de Doctorado de la Universidad Politécnica de CartagenaUniversity
Universidad Politécnica de CartagenaPrograma de doctorado
Programa de Doctorado en Técnicas Avanzadas en Investigación y Desarrollo Agrario y AlimentarioFecha de lectura
2020-06-08Publication date
2020Publisher
Marta Isabel Terry LópezKeywords
BotánicaOlor de las flores
Polinizadores
Genética
Reloj circadiano
Perfumes
Botany
Floriculture
Pollination
Plant genetics
Circadian clock
Floral scent
Abstract
[ENG] Organisms are adapted to cyclic environmental changes, such as tidals, day-night alternance or seasonality. An innate timing device that registers these changes is called biological clock. Circadian clocks are comprised of interlocked regulatory loops of genes and proteins. Anticipation to periodic changes allows organisms to adapt their secondary metabolism, growth or reproduction. In plants, the simplest model found to date is the picoalga Ostreococcus tauri, which has only two clock genes: CIRCANDIAN CLOCK ASSOCIATED 1 and TIMING OF CAB EXPRESSION 1. The analysis of species as Arabidopsis thaliana revealed the existence of a more complex net of clock elements, including the PSEUDO-RESPONSE REGULATORS family, the evening complex and the blue light receptors ZEITLUPE and FLAVIN KELCH F-BOX PROTEIN 1, among others. An example of a character controlled by the circadian clock in flowering plants is scent emission, which shows a daily pattern even under constant light or dark conditions, ...
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