Transcriptional Structure of Petunia Clock in Leaves and Petals
Autor
Terry López, Marta Isabel; Carrera Alesina, Marta; Weiss, Julia Rosl; Egea Gutiérrez-Cortines, MarcosÁrea de conocimiento
Botánica; Fisiología VegetalPatrocinadores
This work was developed under projects Fundación Séneca 19398/PI/14, MICINN-FEDER BFU-2013-45148-R and BFU-2017-88300-C2-1-R.Realizado en/con
Universidad Politécnica de CartagenaFecha de publicación
2019-10-30Editorial
MDPICita bibliográfica
Terry MI, Carrera-Alesina M, Weiss J, Egea-Cortines M. Transcriptional Structure of Petunia Clock in Leaves and Petals. Genes. 2019; 10(11):860. https://doi.org/10.3390/genes10110860Revisión por pares
SiPalabras clave
Flower developmenCircadian clock
Entrainment of circadian rhythm
Petal
Solanaceae
Tissue specific
Transcriptional noise
Resumen
The plant circadian clock coordinates environmental signals with internal processes including secondary metabolism, growth, flowering, and volatile emission. Plant tissues are specialized in different functions, and petals conceal the sexual organs while attracting pollinators. Here we analyzed the transcriptional structure of the petunia (Petunia x hybrida) circadian clock in leaves and petals. We recorded the expression of 13 clock genes in petunia under light:dark (LD) and constant darkness (DD). Under light:dark conditions, clock genes reached maximum expression during the light phase in leaves and the dark period in petals. Under free running conditions of constant darkness, maximum expression was delayed, especially in petals. Interestingly, the rhythmic expression pattern of PhLHY persisted in leaves and petals in LD and DD. Gene expression variability differed among leaves and petals, time of day and photoperiod. The transcriptional noise was higher especially in leaves under ...
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