Open AccessInvolvement of lipid transfer proteins in resistance against a non‐host powdery mildew in Arabidopsis thaliana
Author(s) -
Fahlberg Per,
Buhot Nathalie,
Johansson Oskar N.,
Andersson Mats X.
Publication year - 2019
Publication title -
molecular plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.945
H-Index - 103
eISSN - 1364-3703
pISSN - 1464-6722
DOI - 10.1111/mpp.12740
Subject(s) - powdery mildew , blumeria graminis , biology , arabidopsis thaliana , plant lipid transfer proteins , erysiphe graminis , arabidopsis , host (biology) , mildew , microbiology and biotechnology , penetration (warfare) , botany , genetics , plant disease resistance , gene , hordeum vulgare , poaceae , mutant , operations research , engineering
SUMMARY Non‐specific lipid transfer proteins (LTPs) are involved in the transport of lipophilic compounds to the cuticular surface in epidermal cells and in the defence against pathogens. The role of glycophosphatidylinositol (GPI)‐anchored LTPs (LTPGs) in resistance against non‐host mildews in Arabidopsis thaliana was investigated using reverse genetics. Loss of either LTPG1 , LTPG2 , LTPG5 or LTPG6 increased the susceptibility to penetration of the epidermal cell wall by Blumeria graminis f. sp. hordei ( Bgh ). However, no impact on pre‐penetration defence against another non‐host mildew, Erysiphe pisi ( Ep ), was observed. LTPG1 was localized to papillae at the sites of Bgh penetration. This study shows that, in addition to the previously known functions, LTPGs contribute to pre‐invasive defence against certain non‐host powdery mildew pathogens.