Auxin transport
- Auxin fluxes through plasmodesmata modify root-tip auxin distribution
Highlighted Article: A multicellular model of auxin transport in the Arabidopsis root tip reveals the importance of intercellular plasmodesmata in maintaining auxin pattern and fluxes.
- PIN-FORMED and PIN-LIKES auxin transport facilitators
Summary: This Development at a Glance article gives an overview of the structure, function and regulation of the PIN and PILS families of auxin transport facilitators.
- Phospholipid composition and a polybasic motif determine D6 PROTEIN KINASE polar association with the plasma membrane and tropic responses
Summary: The Arabidopsis kinase D6PK, which phosphorylates auxin efflux carriers, is targeted to the basal cell membrane by binding to polyacidic phospholipids.
- Modeling halotropism: a key role for root tip architecture and reflux loop remodeling in redistributing auxin
Summary: During halotropism, root tip architecture allows for a decrease in PIN2 at the salt-exposed side of the root, resulting in re-routing of auxin to the opposite side; feedback on AUX1 amplifies this auxin asymmetry.
- Plant embryogenesis requires AUX/LAX-mediated auxin influx
Highlighted article: Auxin-dependent cell specification during plant embryo development requires balanced and regulated auxin transport involving both influx and efflux machineries.
- The cyclophilin A DIAGEOTROPICA gene affects auxin transport in both root and shoot to control lateral root formation
Summary: DIAGEOTROPICA modulates the localization of PIN proteins and is required for proper polar auxin transport, highlighting a new developmental role for this cyclophilin.