Gazing at cell wall expansion under golden light

Bénédicte Charrier (1) , Hervé Rabillé (2, 3) , Bernard Billoud (1)

1 LBI2M - Laboratoire de Biologie Intégrative des Modèles Marins
2 RDP - Reproduction et développement des plantes
3 LBI2M - Laboratoire de Biologie Intégrative des Modèles Marins

In plants, cell growth is constrained by a stiff cell wall-at least this is the way textbooks usually present it. Accordingly, many studies have focused on the elasticity and plasticity of the cell wall as prerequisites for expansion during growth. With their specific evolutionary history, cell wall composition and environment, brown algae present a unique configuration offering a new perspective on the involvement of the cell wall-viewed as an inert material with yet intrinsic mechanical properties-in growth. In light of recent findings, we explore here how much of the functional relationship between cell wall chemistry and intrinsic mechanics on the one hand, and growth on the other hand, has been uncovered in brown algae.

Mots clés: Brown algae; Cell wall; Mechanics; Evolution; Polysaccharides; Remodelling; Brown algae

Domaines: Organisation et fonctions cellulaires [q-bio.SC]; Morphogenèse

Bénédicte Charrier, Hervé Rabillé, Bernard Billoud. Gazing at cell wall expansion under golden light. Trends in Plant Science, 2019, 24 (2), pp.130-141. ⟨10.1016/j.tplants.2018.10.013⟩. ⟨hal-02183603⟩