Cytokinin Transporters: Multisite Players in Cytokinin Homeostasis and Signal Distribution

Cytokinins (CKs) are a group of mobile adenine derivatives that act as chemical signals regulating a variety of biological processes implicated in plant development and stress responses. Their synthesis, homeostasis, and signaling perception evoke complicated intracellular traffic, intercellular mov...

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Bibliographic Details
Published in:Frontiers in plant science 2019-05, Vol.10, p.693-693
Main Authors: Liu, Chang-Jun, Zhao, Yunjun, Zhang, Kewei
Format: Article
Language:English
Subjects:
ATP-binding cassette
ATP-binding cassette transporter
BASIC BIOLOGICAL SCIENCES
cytokinin
equilibrative nucleoside transporter
isopentenyl adenine
Plant Science
purine permease
trans-zeatin
transporter
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Summary:Cytokinins (CKs) are a group of mobile adenine derivatives that act as chemical signals regulating a variety of biological processes implicated in plant development and stress responses. Their synthesis, homeostasis, and signaling perception evoke complicated intracellular traffic, intercellular movement, and in short- and long-distance translocation. Over nearly two decades, subsets of membrane transporters have been recognized and implicated in the transport of CKs as well as the related adenylates. In this review, we aim to recapitulate the key progresses in exploration of the transporter proteins involved in cytokinin traffic and translocation, discuss their functional implications in the cytokinin-mediated paracrine and long-distance communication, and highlight some knowledge gaps and open issues toward comprehensively understanding the molecular mechanism of membrane transporters in controlling spatiotemporal distribution of cytokinin species.
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2019.00693