Plant evolution: Convergent evolution of root barriers across vascular plants.

Root endodermis has evolved independently twice in vascular plants, resulting in identical Casparian strips with distinct molecular mechanisms.

• Why it matters: Understanding how similar structures develop through different evolutionary paths reveals the diversity of plant adaptation and the mechanisms underlying convergent evolution.
• What they did: The study examined the evolution of root barriers across vascular plants, focusing on the independent origins of the endodermis and Casparian strips, using comparative analysis.
• The result: Findings demonstrate that similar root structures can arise through different molecular routes, highlighting the flexibility of plant evolution and informing future research on plant adaptation.