Rice immune regulator, OsPti1a, is specifically phosphorylated at the plasma membrane

Hidenori Matsui, Akira Takahashi, Hirohiko Hirochika

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


OsPti1a (Pto-interacting protein 1a) has important roles in the regulation of immune responses in rice. Phosphorylation of a conserved threonine in OsPti1a is necessary to activate defense responses; however, the regulatory mechanism of OsPti1a-mediated immune responses is still obscure. Recently, we revealed that OsPti1a forms protein complex(es) at the plasma membrane and this localization is required for its function. Here, we show that membrane-localized OsPti1a was selectively phosphorylated. Additionally, phosphorylation was not required for the localization of OsPti1a at the membrane. These results suggest that OsPti1a protein is selectively regulated by its phosphorylation after OsPti1a localizes to the plasma membrane.

Original languageEnglish
Article numbere991569
Pages (from-to)1-3
Number of pages3
JournalPlant Signaling and Behavior
Issue number3
Publication statusPublished - Mar 4 2015
Externally publishedYes


  • Phosphorylation
  • Plant immunity
  • Plasma membrane
  • Pti1
  • Rice

ASJC Scopus subject areas

  • Plant Science


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