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

Hikaru Saito, Takaya Oikawa, Shin Hamamoto, Yasuhiro Ishimaru, Miyu Kanamori-Sato, Yuko Sasaki-Sekimoto, Tomoya Utsumi, Jing Chen, Yuri Kanno, Shinji Masuda, Yuji Kamiya, Mitsunori Seo, Nobuyuki Uozumi, Minoru Ueda and Hiroyuki Ohta ()
Additional contact information
Hikaru Saito: Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
Takaya Oikawa: Graduate School of Science, Tohoku University
Shin Hamamoto: Graduate School of Engineering, Tohoku University
Yasuhiro Ishimaru: Graduate School of Science, Tohoku University
Miyu Kanamori-Sato: Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
Yuko Sasaki-Sekimoto: Earth-Life Science Institute, Tokyo Institute of Technology
Tomoya Utsumi: Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
Jing Chen: Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
Yuri Kanno: RIKEN Center for Sustainable Resource Science
Shinji Masuda: Earth-Life Science Institute, Tokyo Institute of Technology
Yuji Kamiya: RIKEN Center for Sustainable Resource Science
Mitsunori Seo: RIKEN Center for Sustainable Resource Science
Nobuyuki Uozumi: Graduate School of Engineering, Tohoku University
Minoru Ueda: Graduate School of Science, Tohoku University
Hiroyuki Ohta: Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology

Nature Communications, 2015, vol. 6, issue 1, 1-11

Abstract: 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.

Date: 2015
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DOI: 10.1038/ncomms7095

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