New insights into the role of Arabidopsis RABA1 GTPases in salinity stress tolerance

Rin Asaoka, Tomohiro Uemura, Sho Nishida, Toru Fujiwara, Takashi Ueda, Akihiko Nakano

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

RAB11 GTPases, widely conserved members of RAB small GTPases, have evolved in a unique way in plants; plant RAB11 has notable diversity compared with animals and yeast. Recently, we have shown that members of RA BA1, a subgroup in Arabidopsis RAB11 group, are required for salinity stress tolerance. To obtain a clue to understand its underlying mechanism, here we investigate whether RA BA1 regulates sodium transport across the plasma membrane and accumulation in the vacuole. The results indicate that the raba1 quadruple mutant is not defective in the import and intracellular distribution of sodium, implying that RA BA1 members are involved in a more indirect way in the responses to salinity stress.

Original languageEnglish
Article numbere25377
JournalPlant Signaling and Behavior
Volume8
Issue number9
DOIs
Publication statusPublished - 2013 Sep 1

Keywords

  • RAB GTPase
  • RABA1
  • Salinity stress

ASJC Scopus subject areas

  • Plant Science

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    Asaoka, R., Uemura, T., Nishida, S., Fujiwara, T., Ueda, T., & Nakano, A. (2013). New insights into the role of Arabidopsis RABA1 GTPases in salinity stress tolerance. Plant Signaling and Behavior, 8(9), [e25377]. https://doi.org/10.4161/psb.25377