title: A salicylic acid-induced lectin-like protein plays a positive role in the effector-triggered immunity response of Arabidopsis thaliana to Pseudomonas syringae Avr-Rpm1.
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 (SAI-LLP1), 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.
authors.forename: Grace
authors.initials: G
authors.lastname: Armijo
authors.forename: Paula
authors.initials: P
authors.lastname: Salinas
authors.forename: Mariela Inés
authors.initials: MI
authors.lastname: Monteoliva
authors.forename: Aldo
authors.initials: A
authors.lastname: Seguel
authors.forename: Consuelo
authors.initials: C
authors.lastname: García
authors.forename: Eva
authors.initials: E
authors.lastname: Villarroel-Candia
authors.forename: Wei
authors.initials: W
authors.lastname: Song
authors.forename: Alexander Ronald
authors.initials: AR
authors.lastname: van der Krol
authors.forename: María Elena
authors.initials: ME
authors.lastname: Álvarez
authors.forename: Loreto
authors.initials: L
authors.lastname: Holuigue
mesh_terms: D017360:Arabidopsis / Q000235:genetics* / Q000276:immunology / Q000378:metabolism / Q000648:ultrastructure; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D001426:Bacterial Proteins / Q000378:metabolism; D016923:Cell Death; D002462:Cell Membrane / Q000378:metabolism; D018506:Gene Expression Regulation, Plant; D006023:Glycoproteins; D037102:Lectins / Q000235:genetics / Q000378:metabolism; D010935:Plant Diseases / Q000276:immunology*; D057865:Plant Immunity; D018515:Plant Leaves / Q000235:genetics / Q000276:immunology / Q000378:metabolism / Q000648:ultrastructure; D044224:Pseudomonas syringae / Q000254:growth & development / Q000472:pathogenicity / Q000502:physiology*; D020156:Salicylic Acid / Q000494:pharmacology*
chemical_list: D029681:Arabidopsis Proteins; D001426:Bacterial Proteins; D006023:Glycoproteins; D037102:Lectins; D020156:Salicylic Acid