Involvement of S-type anion channels in disease resistance against an oomycete pathogen in Arabidopsis seedlings

Takamitsu Kurusu, Daiki Mitsuka, Chikako Yagi, Nobutaka Kitahata, Tomokazu Tsutsui, Takashi Ueda, Yoshiko Yamamoto, Juntaro Negi, Koh Iba, Shigeyuki Betsuyaku, Kazuyuki Kuchitsu

Research output: Contribution to journalArticle

Abstract

Pharmacological indications suggest that anion channel-mediated plasma membrane (PM) anion efflux is crucial in early defense signaling to induce immune responses and programmed cell death in plants. Arabidopsis SLAC1, an S-type anion channel required for stomatal closure, is involved in cryptogein-induced PM Cl efflux to positively modulate the activation of other ion fluxes, production of reactive oxygen species and a wide range of defense responses including hypersensitive cell death in tobacco BY-2 cells. We here analyzed disease resistance against several pathogens in multiple mutants of the SLAC/SLAH channels of Arabidopsis. Resistance against a biotrophic oomycete Hyaloperonospora arabidopsidis Noco2 was significantly enhanced in the SLAC1-overexpressing plants than in the wild-type, while that against a bacteria Pseudomonas syringae was not affected significantly. Possible regulatory roles of S-type anion channels in plant immunity and disease resistance against bacterial and oomycete pathogens is discussed.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalCommunicative and Integrative Biology
Volume11
Issue number3
DOIs
Publication statusPublished - May 4 2018

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)

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