Apoplastic and cytoplasmic location of harpin protein Hpa1Xoo plays different roles in H2O2 generation and pathogen resistance in Arabidopsis

• Published in: Plant molecular biology Vol. 79; no. 4-5; pp. 375 - 391
• Main Authors: Sang, Suling, Li, Xiaojie, Gao, Rong, You, Zhenzhen, Lü, Beibei, Liu, Peiqing, Ma, Qixiang, Dong, Hansong
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.07.2012
• Subjects: Arabidopsis - genetics; Arabidopsis - metabolism; Arabidopsis - microbiology; Bacterial Outer Membrane Proteins - genetics; Bacterial Outer Membrane Proteins - metabolism; Biochemistry; Biological Transport, Active; Biomedical and Life Sciences; Cell Membrane - metabolism; Cytoplasm - metabolism; Extracellular Space - metabolism; Genes, Bacterial; Hydrogen Peroxide - metabolism; Life Sciences; Plant Diseases - microbiology; Plant Pathology; Plant Sciences; Plants, Genetically Modified; Recombinant Proteins - genetics; Recombinant Proteins - metabolism; Xanthomonas - genetics; Xanthomonas - metabolism; Xanthomonas - pathogenicity; H; Hpa1; Plant defenses; Harpin; Cytoplasmic translocation; O

Harpin proteins secreted by phytopathogenic bacteria have been shown to activate the plant defense pathway, which involves transduction of a hydrogen peroxide (H 2 O 2 ) signal generated in the apoplast. However, the way in which harpins are recognized in the pathway and what role the apoplastic H 2...