Open AccessECHIDNA-mediated post-Golgi trafficking of auxin carriers for differential cell elongation
Author(s) -
Yohann Boutté,
Kristoffer Jonsson,
Heather E. McFarlane,
Errin Johnson,
Delphine Gendre,
Ranjan Swarup,
Jiřı́ Friml,
Lacey Samuels,
Stéphanie Robert,
Rishikesh P. Bhalerao
Publication year - 2013
Publication title -
proceedings of the national academy of sciences
Language(s) - English
Resource type - Journals
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.1309057110
Subject(s) - auxin , microbiology and biotechnology , arabidopsis , endocytosis , golgi apparatus , brefeldin a , biology , secretory pathway , polar auxin transport , secretion , mutant , transport protein , biochemistry , endoplasmic reticulum , cell , gene
Significance Unlike in animals, postembryonic development in plants is highly flexible and allows them to modulate their growth patterns in response to external signals or as part of endogenous developmental programs. Differential cell elongation is a widely used developmental program used in plants to respond to external and endogenous signals. Asymmetric distribution of the plant hormone indole-acetic acid (auxin) mediated by plasma membrane localized auxin carriers is crucial for differential cell elongation. Our results identify distinct mechanisms for trafficking of auxin influx and efflux carriers from the post-Golgi compartmenttrans -Golgi network to the plasma membrane during differential cell elongation in which thetrans -Golgi network–localized ECHIDNA protein plays a key role by acting at the level of secretory vesicles genesis.
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