A Salicylic Acid–Induced Lectin-Like Protein Plays a Positive Role in the Effector-Triggered Immunity Response of Arabidopsis thaliana

G. Armijo, P. Salinas, M.I. Monteoliva, C. Garcia, A. Seguel, E. Villarroel-Candia, W. Song, A.R. van der Krol, M.E. Alvarez, L. Holuigue

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)

Abstract

Salicylic acid (SA) is one of the key hormones that orchestrate the pathogen-induced immune response in plants. This response is often characterized by the activation of a local hypersensitive reaction involving programmed cell death, which constrains proliferation of biotrophic pathogens. Here, we report the identification and functional characterization of an SA-induced legume lectin-like protein 1 (SAILLP1), which is coded by a gene that belongs to the group of early SA-activated Arabidopsis genes. SAI-LLP1 expression is induced upon inoculation with avirulent strains of Pseudomonas syringae pv. tomato via an SA-dependent mechanism. Constitutive expression of SAI-LLP1 restrains proliferation of P. syringae pv. tomato Avr-Rpm1 and triggers more cell death in inoculated leaves. Cellular and biochemical evidence indicates that SAI-LLP1 is a glycoprotein located primarily at the apoplastic side of the plasma membrane. This work indicates that SAI-LLP1 is involved in resistance to P. syringae pv. tomato Avr-Rpm1 in Arabidopsis, as a component of the SA-mediated defense processes associated with the effector-triggered immunity response.
Original languageEnglish
Pages (from-to)1395-1406
JournalMolecular Plant-Microbe Interactions
Volume26
Issue number12
DOIs
Publication statusPublished - 2013

Keywords

  • systemic acquired-resistance
  • multiple sequence alignment
  • hypersensitive cell-death
  • disease resistance
  • plant defense
  • plasma-membrane
  • gene encodes
  • receptor
  • expression
  • rin4

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