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

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. GTR1 is known to transport glucosinolates in Arabidopsis. Here, Saito et al. show that GTR1 also transports the plant hormones jasmonate and gibberellin when heterologously expressed in Xenopus oocytes, and that gtr1mutant plants show a gibberellin-related fertility phenotype.

• Publication year

  2015

• Venue

  Nature Communications

• Publication date

  2015-02-04

• Fields of study

  Biology, Medicine, Environmental Science

• Identifiers
  DOI 10.1038/ncomms7095PMID 25648767PMCID 4347201
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

• Image processing

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