Transcription profiling of wild type and mutant Arabidopsis plants innoculated with the host powdery mildew Erysiphe cichoracearum or the non-host barley powdery mildew Blumeria graminis f. sp. hordei

ABSTRACT: Attack by the host powdery mildew Erysiphe cichoracearum usually results in successful penetration and rapid proliferation of the fungus on Arabidopsis. By contrast, the nonhost barley powdery mildew Blumeria graminis f. sp. hordei (Bgh) typically fails to penetrate Arabidopsis epidermal cells. In both instances the plant secretes cell wall appositions or papillae beneath the penetration peg of the fungus. Genetic screens for mutations that result in increased penetration of Bgh on Arabidopsis have recently identified the PEN1 syntaxin. Here we examine the role of PEN1 and of its closest homologue, SYP122, identified as a syntaxin whose expression is responsive to infection. pen1 syp122 double mutants are both dwarfed and necrotic, suggesting that the two syntaxins have overlapping functio

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Janos Demeter 

PROVIDER: E-SMDB-4008 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress