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The new horizon of plant auxin signaling via cell-surface co-receptors

Jen Sheen

Department of Molecular Biology and Centre for Computational and Integrative Biology, Massachusetts General Hospital, and Department of Genetics, Harvard Medical School, Boston, MA, USA
* Correspondence: Jen Sheen(sheen@molbio.mgh.harvard.edu)

Auxin is a central hormone regulating plant growth and development, but the cellular sites and molecular mechanisms of auxin perception and signaling remain incompletely understood for decades. A recent Cell paper by Yu et al. provided new compelling evidence that multiple auxin-binding proteins, ABP1 and related ABL1 and ABL2, bind auxin synergistically with plasma membrane co-receptors, TMK receptor kinases, in apoplast to trigger rapid global protein phosphorylation and diverse developmental processes.

https://doi.org/10.1038/s41422-023-00921-0

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