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 language | English |
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Pages (from-to) | 1395-1406 |
Journal | Molecular Plant-Microbe Interactions |
Volume | 26 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2013 |
Keywords
- systemic acquired-resistance
- multiple sequence alignment
- hypersensitive cell-death
- disease resistance
- plant defense
- plasma-membrane
- gene encodes
- receptor
- expression
- rin4