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A new scenario for gravity detection in plants: the position sensor hypothesis

Abstract : The detection of gravity plays a fundamental role during the growth and evolution of plants. Although progress has been made in our understanding of the molecular, cellular and physical mechanisms involved in the gravity detection, a coherent scenario consistent with all the observations is still lacking. In this perspective paper we discuss recent experiments showing that the response to inclination of shoots is independent of the gravity intensity, meaning that the gravity sensor detects an inclination and not a force. This result questions some of the commonly accepted hypotheses and leads to propose a new "position sensor hypothesis". The implications of this new scenario are discussed in the light of different observations available in the literature.
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Submitted on : Friday, May 26, 2017 - 12:05:08 PM
Last modification on : Tuesday, October 19, 2021 - 10:58:53 PM
Long-term archiving on: : Monday, August 28, 2017 - 4:43:35 PM

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Olivier Pouliquen, Yoël Forterre, Antoine Bérut, Hugo Chauvet, François Bizet, et al.. A new scenario for gravity detection in plants: the position sensor hypothesis. Physical Biology, Institute of Physics: Hybrid Open Access, 2017, 14 (3), pp.035005. ⟨10.1088/1478-3975/aa6876⟩. ⟨hal-01425608v3⟩

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