Plant cell wall sensors rewrite the rules of disease defense
Zhong T, Ojiambo PS, Rellán-Álvarez R, Balint-Kurti P
Plant Signaling
The tomatoes, wheat, and roses in your garden fend off fungal and bacterial attacks using these same wall-spanning sensors, so cracking how they work could lead to hardier, less disease-prone plant varieties.
Every plant cell is wrapped in a wall, and sitting in that wall are proteins called WAKs that act like tripwires for danger. For decades scientists thought these tripwires worked one specific way, by grabbing onto fragments released when the wall gets damaged. New genetic studies show that story is incomplete, and researchers are now piecing together a better picture of how plants sense attacks from fungi, bacteria, and other pathogens.
Key Findings
WAKs and WAK-like kinases (WAKLs) are receptor-like kinase subfamilies that physically connect the plant cell wall to the cytoplasm and regulate immune signaling.
Recent genetic evidence challenges the long-standing model that Arabidopsis WAKs act as direct receptors for oligogalacturonides (OGs), a classic damage-associated signal.
The review proposes a new working model for how WAKs and WAKLs detect pathogens and outlines shared immune signaling pathways across multiple plant species.
chevron_right Technical Summary
Plants have proteins called WAKs that act like sensors spanning the cell wall, helping detect invading pathogens and trigger immune defenses. New genetic evidence is overturning the old idea of exactly how these sensors recognize danger signals, pointing researchers toward a revised model of plant immunity.
Abstract Preview
Original paper
WAK This Way: The Roles of Wall-Associated Kinases in Plant Disease Resistance.
Plant wall-associated kinases (WAKs) and WAK-like kinases (WAKLs) are closely related subfamilies of receptor-like kinases (RLKs) that bridge the plant cell wall and cytoplasm and mediate essential...
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