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24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

Menu Logo Principal Institut Agro Rennes-Angers Angers University   IRHS


Research Topics

Le développement architectural de la plante est un processus complexe qui implique un certain nombre de variables (expansion foliaire, floraison, ramification, …) en interaction les unes avec les autres. Chacune d’elles est contrôlée par plusieurs processus imbriqués, impliquant des régulateurs trophiques et hormonaux, et gouvernés par l’environnement et le génotype. Nos recherches visent à identifier ce réseau de régulation en prenant comme porte d’entrée une variable architecturale majeure, la ramification. Il s’agit d’acquérir une compréhension intégrée des mécanismes autour de trois axes allant de l’échelle locale du bourgeon à l’échelle de la plante entière :

(1)    identifier le réseau physiologique et moléculaire gouvernant l’initiation d’une ramification (débourrement) à l’échelle du nœud portant le bourgeon;

(2)    comprendre comment l’environnement (lumière, eau) et le génotype module le réseau physiologique de régulation de la ramification à l’échelle d’une plante ;

(3)    caractériser les mécanismes écophysiologiques de la réponse de l’architecture globale de la plante à l’environnement et au génotype (lumière, contraintes urbaines).

Dans cette démarche, nous mobilisons à la fois des expérimentations à différentes échelles et la modélisation qui permet d’intégrer différentes échelles d’études et de tester des hypothèses sur des réseaux complexes de régulation. 

At the node level

At the node level, what physiological and molecular network regulates branching initiation?

The initiation of a branching goes through the ability of axillary bud to grow, which is finely closely controlled by different signals, both...
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Light environment and genotype

How do light environment and genotype modulate the physiological network involved in branching control?

Light plays a determining role in the acquisition of the aerial architecture of the plant. It acts in a complex way, both by its quantity and...
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What is the impact of different light scenarios on the plant architecture and agronomic performance?

A number of new technologies, such as LEDs, photoconversion films (CASCADE Technology), allow to modify the light received by plants and thus open...
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How does the plant respond to the urban environment?

How does the plant respond to the urban environment?
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