TY - JOUR 
A1 - Terry López, Marta Isabel
AU - Pérez Sanz, Fernando
AU - Navarro Lorente, Pedro Javier
AU - Weiss, Julia
AU - Egea Gutiérrez-Cortines, Marcos
T1 - The Snapdragon LATE ELONGATED HYPOCOTYL Plays A Dual Role in Activating Floral Growth and Scent Emission
Y1 - 2019
SN - 2073-4409
UR - http://hdl.handle.net/10317/9440
AB - The plant circadian clock controls a large number of internal processes, including growth and metabolism. Scent emission displays a circadian pattern in many species such as the snapdragon. Here we show that knocking down LATE ELONGATED HYPOCOTYL in Antirrhinum majus affects growth and scent emission. In order to gain an understanding of the growth kinetics, we took a phenomic approach using in-house artificial vision systems, obtaining time-lapse videos. Wild type flowers showed a higher growth speed than knockdown plants. The maximal growth rate was decreased by 22% in plants with lower LHY expression. Floral volatiles were differentially affected as RNAi plants showed advanced emission of compounds synthesized from cinnamic acid and delayed emission of metabolites of benzoic acid. The monoterpenes myrcene and ocimene were delayed, whereas the sesquiterpene farnesene was advanced. Overall, transgenic lines showed an altered volatile emission pattern and displayed a modified scent profile. Our results show that AmLHY plays an important role in the quantitative and qualitative control of floral growth and scent emission.
KW - Botánica
KW - Antirrhinum
KW - Aroma
KW - Artificial vision
KW - Biological rhythm
KW - Flower development
KW - Growth rate
KW - Phenomics
KW - RNA interference
KW - Volatile organic compounds
KW - 3103.09 Cultivos de Plantas
KW - 2417 Biología Vegetal (Botánica)
LA - eng
PB - MDPI
ER -