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Open AccessArticle

The Snapdragon LATE ELONGATED HYPOCOTYL Plays A Dual Role in Activating Floral Growth and Scent Emission

1
Genética Molecular, Instituto de Biotecnología Vegetal, Edificio I+D+I, Plaza del Hospital s/n, Universidad Politécnica de Cartagena, 30202 Cartagena, Spain
2
Biomedical Informatic and Bioinformatic Platform, Biomedical Research Institute of Murcia, University Clinical Hospital ‘Virgen de la Arrixaca’, University of Murcia, 30120 Murcia, Spain
3
Escuela Técnica Superior de Ingeniería de Telecomunicación (DSIE), Campus Muralla del Mar, s/n, Universidad Politécnica de Cartagena, 30202 Cartagena, Spain
*
Author to whom correspondence should be addressed.
Cells 2019, 8(8), 920; https://doi.org/10.3390/cells8080920
Received: 17 July 2019 / Revised: 9 August 2019 / Accepted: 16 August 2019 / Published: 17 August 2019
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. View Full-Text
Keywords: antirrhinum; aroma; artificial vision; biological rhythm; flower development; growth rate; phenomics; RNA interference; volatile organic compounds antirrhinum; aroma; artificial vision; biological rhythm; flower development; growth rate; phenomics; RNA interference; volatile organic compounds
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MDPI and ACS Style

Terry, M.I.; Pérez-Sanz, F.; Navarro, P.J.; Weiss, J.; Egea-Cortines, M. The Snapdragon LATE ELONGATED HYPOCOTYL Plays A Dual Role in Activating Floral Growth and Scent Emission. Cells 2019, 8, 920. https://doi.org/10.3390/cells8080920

AMA Style

Terry MI, Pérez-Sanz F, Navarro PJ, Weiss J, Egea-Cortines M. The Snapdragon LATE ELONGATED HYPOCOTYL Plays A Dual Role in Activating Floral Growth and Scent Emission. Cells. 2019; 8(8):920. https://doi.org/10.3390/cells8080920

Chicago/Turabian Style

Terry, Marta I.; Pérez-Sanz, Fernando; Navarro, Pedro J.; Weiss, Julia; Egea-Cortines, Marcos. 2019. "The Snapdragon LATE ELONGATED HYPOCOTYL Plays A Dual Role in Activating Floral Growth and Scent Emission" Cells 8, no. 8: 920. https://doi.org/10.3390/cells8080920

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