mur (1) stress (1) sol (1) racine (1) nutriment (1) besoin (1) environnement (1) différenciation (1) jeune (1) Differentiation (1) Development (1) Composition (1) Roots (Botany)--Development (1) Roots (Botany)--Growth (1) Arabidopsis (1) Protection (1) Walls (1) Turgor (1) Stability (1) Soils (1) Series (1) Roots (Botany) (1) Plant cell walls (1) Nature and nurture (1) Nature (1) Hair (1) Growth (1) Functions (1) Example (1) Euthenics (1)