Ψ_M = 0

Potentiels hydriques au travers de la racine (en MPa) – les flèches indiquent la direction des flux

Eau du sol →
ψ_O = -0.01
ψ_T = 0
ψ = -0.01
→

Epiderme symplaste ← ψO = -0.6 ψT = 0.575 ψ = -0.025 →	Cortex I ← ψO = -0.7 ψT = 0.65 ψ = -0.05 →	Cortex II ← ψO = -0.8 ψT = 0.725 ψ = -0.075 →	endoderme ← ψO = -1.3 ψT = 1.2 ψ = -0.1 →	Péricycle I ← ψO = -1.4 ψT = 1.275 ψ = -0.125 →	Péricycle II ← ψO = -1.5 ψT = 1.35 ψ = -0.15 →↓		Phloème ← diffusion des solutés ψO = -2.0 ψT = 2.0 ψ = 0 →
Apoplaste cortical ψO = -0.02 ψT = 0 ψ = -0.02			↑ Barrière apoplastique	Apoplaste vasculaire ψO = -0.35 ψT = 0.2 ψ = -0.15		xylème ← ψO = -0.2 ψT = -0.2 ψ = -0.4