Communication Dans Un Congrès Année : 2025

Can Plants Grow Upright in closed and space environments? Mechanisms Underlying Plant Stability

Résumé

On Earth, plants are continuously exposed to mechanical stimuli such as wind and gravity. These factors influence their growth and posture, both of which are essential to ensure autotrophy and development. In a lunar or microgravity environment, the absence of wind, combined with the constraints of closed cultivation systems, could lead to reduced growth and altered fruit production capacity due to the lack of weight sensation and airflow. One of the major challenges in space environments is therefore to promote an upright plant habit and maintain effective root anchorage. In this talk, I will discuss ground-based studies that have improved our understanding of gravity perception and proprioception in plants. I will highlight the respective roles of wind and gravity in shoot development and root anchorage. Results from microgravity experiments will be presented along with future research directions. I will emphasize the importance of identifying the molecular and cellular players involved in the formation of supporting tissues and the responses of the root system. I will illustrate how phenotyping of agronomically relevant plants, either in the absence of or in response to mechanical stimuli under reduced gravity conditions, can help to identify valuable ideotypes for space cultivation. Finally, we will discuss the conditions required to maintain plant growth and posture in spatial conditions.

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Dates et versions

hal-05571652 , version 1 (29-03-2026)

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  • HAL Id : hal-05571652 , version 1

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Valérie Legué, Mélanie Decourteix, Jérôme Franchel, Nicole Brunel-Michac, Félix Hartmann, et al.. Can Plants Grow Upright in closed and space environments? Mechanisms Underlying Plant Stability. 2025 MELiSSA CONFERENCE, Oct 2025, GRANADA, Spain. ⟨hal-05571652⟩
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