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Interplay between turgor pressure and plasmodesmata during plant development

Abstract : Plasmodesmata traverse cell walls, generating connections between neighboring cells. They allow intercellular movement of molecules such as transcription factors, hormones, and sugars, and thus create a symplasmic continuity within a tissue. One important factor that determines plasmodesmal permeability is their aperture, which is regulated during developmental and physiological processes. Regulation of aperture has been shown to affect developmental events such as vascular differentiation in the root, initiation of lateral roots, or transition to flowering. Extensive research has unraveled molecular factors involved in the regulation of plasmodesmal permeability. Nevertheless, many plant developmental processes appear to involve feedbacks mediated by mechanical forces, raising the question of whether mechanical forces and plasmodesmal permeability affect each other. Here, we review experimental data on how one of these forces, turgor pressure, and plasmodesmal permeability may mutually influence each other during plant development, and we discuss the questions raised by these data. Addressing such questions will improve our knowledge of how cellular patterns emerge during development, shedding light on the evolution of complex multicellular plants.
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https://hal.inrae.fr/hal-03153187
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Submitted on : Monday, June 7, 2021 - 3:01:34 PM
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Valeria Hernández-Hernández, Mariana Benítez, Arezki Boudaoud. Interplay between turgor pressure and plasmodesmata during plant development. Journal of Experimental Botany, Oxford University Press (OUP), 2019, 71 (3), pp.768-777. ⟨10.1093/jxb/erz434⟩. ⟨hal-03153187⟩

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