What is it about?

Gradients of the plant hormone auxin affect plant growth and development and are sustained by influx and efflux carriers. In the present study, we characterised the sub cellular localisation of the auxin efflux carrier PIN-FORMED 6 (PIN6) in Arabidopsis thaliana.

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Why is it important?

Recently the localization of PIN6 was reported to be tissue specific and regulated through unknown mechanisms. Here, we provide evidence that PIN6 subcellular localization is phosphorylation dependent and plays a critical role during inflorescence stem elongation, post flowering.

Perspectives

Our data suggest that PIN6 may act as a gatekeeper ensuring that Arabidopsis plants efficiently develop the inflorescence stem at the appropriate, possibly environmentally determined time.

Franck Ditengou
Albert-Ludwigs-Universitat Freiburg

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This page is a summary of: Characterization of auxin transporter PIN6 plasma membrane targeting reveals a function for PIN6 in plant bolting, New Phytologist, December 2017, Wiley,
DOI: 10.1111/nph.14923.
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