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Nat Commun. 2015 Feb 4;6:6095. doi: 10.1038/ncomms7095.

The jasmonate-responsive GTR1 transporter is required for gibberellin-mediated stamen development in Arabidopsis.

Author information

1
Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259-B65 Nagatsuta-cho Midori-ku, Yokohama 226-8501, Japan.
2
Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-0845, Japan.
3
Graduate School of Engineering, Tohoku University, 6-6-07, Aobayama, Aoba-ku, Sendai 980-8579, Japan.
4
Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan.
5
RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho Tsurumi-ku, Yokohama 230-0045, Japan.
6
1] Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan [2] Center for Biological Resources and Informatics, Tokyo Institute of Technology, 4259-B65 Nagatsuta-cho Midori-ku, Yokohama 226-8501, Japan.
7
1] Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259-B65 Nagatsuta-cho Midori-ku, Yokohama 226-8501, Japan [2] Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan.

Abstract

Plant hormones are transported across cell membranes during various physiological events. Recent identification of abscisic acid and strigolactone transporters suggests that transport of various plant hormones across membranes does not occur by simple diffusion but requires transporter proteins that are strictly regulated during development. Here, we report that a major glucosinolate transporter, GTR1/NPF2.10, is multifunctional and may be involved in hormone transport in Arabidopsis thaliana. When heterologously expressed in oocytes, GTR1 transports jasmonoyl-isoleucine and gibberellin in addition to glucosinolates. gtr1 mutants are severely impaired in filament elongation and anther dehiscence resulting in reduced fertility, but these phenotypes can be rescued by gibberellin treatment. These results suggest that GTR1 may be a multifunctional transporter for the structurally distinct compounds glucosinolates, jasmonoyl-isoleucine and gibberellin, and may positively regulate stamen development by mediating gibberellin supply.

PMID:
25648767
PMCID:
PMC4347201
DOI:
10.1038/ncomms7095
[Indexed for MEDLINE]
Free PMC Article

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