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Planta Med 2015; 81(06): 474-487
DOI: 10.1055/s-0035-1545880
Reviews
Georg Thieme Verlag KG Stuttgart · New York

The ABC of Phytohormone Translocation

Eva Hellsberg
University of Vienna, Department of Pharmaceutical Chemistry, Vienna, Austria
,
Floriane Montanari
University of Vienna, Department of Pharmaceutical Chemistry, Vienna, Austria
,
Gerhard F. Ecker
University of Vienna, Department of Pharmaceutical Chemistry, Vienna, Austria
› Author Affiliations
Further Information

Publication History

received 12 August 2014
revised 19 February 2015

accepted 23 February 2015

Publication Date:
23 April 2015 (online)

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Abstract

ATP-driven transport across biological membranes is a key process to translocate solutes from the interior of the cell to the extracellular environment. In humans, ATP-binding cassette transporters are involved in absorption, distribution, metabolism, excretion, and toxicity, and also play a major role in anticancer drug resistance. Analogous transporters are also known to be involved in phytohormone translocation. These include, e.g., the transport of auxin by ABCB1/19 in Arabidopsis thaliana, the transport of abscisic acid by AtABCG25, and the transport of strigolactone by the Petunia hybrida ABC transporter PDR1. Within this article, we outline the current knowledge about plant ABC transporters with respect to their structure and function, and provide, for the first time, a protein homology model of the strigolactone transporter PDR1 from P. hybrida.

Key words

Petunia hybrida PDR1 - Solanaceae - Arabidopsis thaliana - Brassicaceae - ABC transporters - phytohormone transport - homology modelling

Supporting Information

 

  • References

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