A class III peroxidase PRX34 is a component of disease resistance in Arabidopsis

Lei Zhao, Le Thi Phuong, Mai Thanh Luan, Aprilia Nur Fitrianti, Hidenori Matsui, Hirofumi Nakagami, Yoshiteru Noutoshi, Mikihiro Yamamoto, Yuki Ichinose, Tomonori Shiraishi, Kazuhiro Toyoda

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


PRX34 mediates the oxidative burst in Arabidopsis. Here we characterized two additional Arabidopsis prx34 null mutants (prx34-2, prx34-3), besides the well-studied prx34-1. Due to a decrease in corresponding peroxidase, the activity that generates reactive oxygen species (ROS) was significantly lower in cell wall extracts of prx34-2 and prx34-3 plants. Consistently, the prx34-2 and prx34-3 exhibited reduced accumulation both of ROS and callose in Flg22-elicitor-treated leaves, leading to enhanced susceptibility to bacterial and fungal pathogens. In contrast, ectopic expression of PRX34 in the wild type caused enhanced resistance. PRX34 is thus a component for disease resistance in Arabidopsis.

Original languageEnglish
Pages (from-to)405-412
Number of pages8
JournalJournal of General Plant Pathology
Issue number6
Publication statusPublished - Nov 1 2019


  • Apoplastic oxidative burst
  • Arabidopsis
  • Cell wall
  • Class III peroxidase
  • PRX34
  • Reactive oxygen species (ROS)

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science


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