LightCue: An Innovative Far-Red Light Emitter for Locally Modifying the Spectral Cue in Outdoor Conditions with Global Consequences on Plant Architecture

Plasticity of plant architecture is a promising lever to increase crop resilience to biotic and abiotic damage. Among the main drivers of its regulation are the spectral signals which occur via photomorphogenesis processes. In particular, branching, one of the yield components, is responsive to phot...

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Autores principales:	Alain Fortineau, Didier Combes, Céline Richard-Molard, Ela Frak, Alexandra Jullien
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	R:FR ratio photomorphogenesis light emitting diode oilseed rape branching Botany QK1-989
Acceso en línea:	https://doaj.org/article/f4193e1c5e124f588550f15f25d7aa8f
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spelling	oai:doaj.org-article:f4193e1c5e124f588550f15f25d7aa8f2021-11-25T18:46:58ZLightCue: An Innovative Far-Red Light Emitter for Locally Modifying the Spectral Cue in Outdoor Conditions with Global Consequences on Plant Architecture10.3390/plants101124832223-7747https://doaj.org/article/f4193e1c5e124f588550f15f25d7aa8f2021-11-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2483https://doaj.org/toc/2223-7747Plasticity of plant architecture is a promising lever to increase crop resilience to biotic and abiotic damage. Among the main drivers of its regulation are the spectral signals which occur via photomorphogenesis processes. In particular, branching, one of the yield components, is responsive to photosynthetic photon flux density (PPFD) and to red to far-red ratio (R:FR), both signals whose effects are tricky to decorrelate in the field. Here, we developed a device consisting of far-red light emitting diode (LED) rings. It can reduce the R:FR ratio to 0.14 in the vicinity of an organ without changing the PPFD in outdoor high irradiance fluctuating conditions, which is a breakthrough as LEDs have been mostly used in non-fluctuant controlled conditions at low irradiance over short periods of time. Applied at the base of rapeseed stems during the whole bolting-reproductive phase, LightCue induced an expected significant inhibitory effect on two basal targeted axillary buds and a strong unexpected stimulatory effect on the overall plant aerial architecture. It increased shoot/root ratio while not modifying the carbon balance. LightCue therefore represents a promising device for progress in the understanding of light signal regulation in the field.Alain FortineauDidier CombesCéline Richard-MolardEla FrakAlexandra JullienMDPI AGarticleR:FR ratiophotomorphogenesislight emitting diodeoilseed rapebranchingBotanyQK1-989ENPlants, Vol 10, Iss 2483, p 2483 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	R:FR ratio photomorphogenesis light emitting diode oilseed rape branching Botany QK1-989
spellingShingle	R:FR ratio photomorphogenesis light emitting diode oilseed rape branching Botany QK1-989 Alain Fortineau Didier Combes Céline Richard-Molard Ela Frak Alexandra Jullien LightCue: An Innovative Far-Red Light Emitter for Locally Modifying the Spectral Cue in Outdoor Conditions with Global Consequences on Plant Architecture
description	Plasticity of plant architecture is a promising lever to increase crop resilience to biotic and abiotic damage. Among the main drivers of its regulation are the spectral signals which occur via photomorphogenesis processes. In particular, branching, one of the yield components, is responsive to photosynthetic photon flux density (PPFD) and to red to far-red ratio (R:FR), both signals whose effects are tricky to decorrelate in the field. Here, we developed a device consisting of far-red light emitting diode (LED) rings. It can reduce the R:FR ratio to 0.14 in the vicinity of an organ without changing the PPFD in outdoor high irradiance fluctuating conditions, which is a breakthrough as LEDs have been mostly used in non-fluctuant controlled conditions at low irradiance over short periods of time. Applied at the base of rapeseed stems during the whole bolting-reproductive phase, LightCue induced an expected significant inhibitory effect on two basal targeted axillary buds and a strong unexpected stimulatory effect on the overall plant aerial architecture. It increased shoot/root ratio while not modifying the carbon balance. LightCue therefore represents a promising device for progress in the understanding of light signal regulation in the field.
format	article
author	Alain Fortineau Didier Combes Céline Richard-Molard Ela Frak Alexandra Jullien
author_facet	Alain Fortineau Didier Combes Céline Richard-Molard Ela Frak Alexandra Jullien
author_sort	Alain Fortineau
title	LightCue: An Innovative Far-Red Light Emitter for Locally Modifying the Spectral Cue in Outdoor Conditions with Global Consequences on Plant Architecture
title_short	LightCue: An Innovative Far-Red Light Emitter for Locally Modifying the Spectral Cue in Outdoor Conditions with Global Consequences on Plant Architecture
title_full	LightCue: An Innovative Far-Red Light Emitter for Locally Modifying the Spectral Cue in Outdoor Conditions with Global Consequences on Plant Architecture
title_fullStr	LightCue: An Innovative Far-Red Light Emitter for Locally Modifying the Spectral Cue in Outdoor Conditions with Global Consequences on Plant Architecture
title_full_unstemmed	LightCue: An Innovative Far-Red Light Emitter for Locally Modifying the Spectral Cue in Outdoor Conditions with Global Consequences on Plant Architecture
title_sort	lightcue: an innovative far-red light emitter for locally modifying the spectral cue in outdoor conditions with global consequences on plant architecture
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f4193e1c5e124f588550f15f25d7aa8f
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LightCue: An Innovative Far-Red Light Emitter for Locally Modifying the Spectral Cue in Outdoor Conditions with Global Consequences on Plant Architecture

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