Plants: the latest model system for G‐protein research

In humans, heterotrimeric G proteins couple stimulus perception by G‐protein‐coupled receptors (GPCRs) with numerous downstream effectors. By contrast, despite great complexity in their signal‐transduction attributes, plants have a simpler repertoire of G‐signalling components. Nonetheless, recent studies on Arabidopsis thaliana have shown the importance of plant G‐protein signalling in such fundamental processes as cell proliferation, hormone perception and ion‐channel regulation.

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