Abstract
Plant Science Soil nutrients such as nitrogen sources are not uniformly distributed. Neither are plant roots. Nonetheless, roots of Arabidopsis seedlings seek out pockets of soil ammonium and nitrate. Otvos et al. clarify how root growth and branching are regulated to optimize nitrogen uptake. The auxin efflux carrier PIN-FORMED 2 (PIN2) is regulated posttranscriptionally by phosphorylation at its serine-439 in response to shifts in ammonium or nitrate availability. Phosphorylation in turn triggers changes in PIN2 subcellular localization, which drives changes in auxin distribution between root cortex and epidermis, causing altered root growth rate or direction. EMBO J. e106862 (2020).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
