title: PIN proteins and the evolution of plant development.
abstract: Many aspects of development in the model plant Arabidopsis thaliana involve regulated distribution of the hormone auxin by the PIN-FORMED (PIN) family of auxin efflux carriers. The role of PIN-mediated auxin transport in other plants is not well understood, but studies in a wider range of species have begun to illuminate developmental mechanisms across land plants. In this review, I discuss recent progress in understanding the evolution of PIN-mediated auxin transport, and its role in development across the green plant lineage. I also discuss the idea that changes in auxin biology led to morphological novelty in plant development: currently available evidence suggests major innovations in auxin transport are rare and not associated with the evolution of new developmental mechanisms.
authors.affiliation: Sainsbury Laboratory, University of Cambridge, Bateman Street, Cambridge, CB2 1LR, UK. Electronic address: tom.bennett@slcu.cam.ac.uk.
authors.forename: Tom
authors.initials: T
authors.lastname: Bennett
mesh_terms: D007210:Indoleacetic Acids / Q000378:metabolism; D026901:Membrane Transport Proteins / Q000235:genetics / Q000378:metabolism; D063245:Plant Development / Q000235:genetics / Q000502:physiology*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*
chemical_list: D007210:Indoleacetic Acids; D026901:Membrane Transport Proteins; D010940:Plant Proteins
keywords: PIN proteins; auxin; auxin transport; evolution of development; plant development