Arabidopsis Heterotrimeric G Beta Variants Shape Plant Development and Modulate Responses to Endoplasmic Reticulum Stress and Salt Stress.
Alternative splicing of Arabidopsis Gβ gene produces four isoforms that diversify G-protein signaling, expanding potential combinations from three to twelve.
- Why it matters: Understanding how plants adapt to environmental stresses and regulate development is crucial for improving resilience, yet the full scope of G-protein functions in plants remains unclear.
- What they did: The study identified four Gβ isoforms generated through alternative splicing, characterized their cellular localization, interactions with Gγ subunits, and roles in development and stress responses.
- The result: The isoforms enable flexible G-protein signaling, with each conferring specific advantages under stress, thereby enhancing plant adaptability without gene family expansion.