title: The Chinese wild grapevine (Vitis pseudoreticulata) E3 ubiquitin ligase Erysiphe necator-induced RING finger protein 1 (EIRP1) activates plant defense responses by inducing proteolysis of the VpWRKY11 transcription factor.
abstract: Ubiquitin-mediated regulation responds rapidly to specific stimuli; this rapidity is particularly important for defense responses to pathogen attack. Here, we investigated the role of the E3 ubiquitin ligase Erysiphe necator-induced RING finger protein 1 (EIRP1) in the defense response of Chinese wild grapevine Vitis pseudoreticulata. The regulatory function of E3 ubiquitin ligase EIRP1 was investigated using molecular, genetic and biochemical approaches. EIRP1 encodes a C3HC4-type Really Interesting New Gene (RING) finger protein that harbors E3 ligase activity. This activity requires the conserved RING domain, and VpWRKY11 also interacts with EIRP1 through the RING domain. VpWRKY11 localizes to the nucleus and activates W-box-dependent transcription in planta. EIRP1 targeted VpWRKY11 in vivo, resulting in VpWRKY11 degradation. The expression of EIRP1 and VpWRKY11 responds rapidly to powdery mildew in Vitis pseudoreticulata grapevine; also, overexpression of EIRP1 in Arabidopsis confers enhanced resistance to the pathogens Golovinomyces cichoracearum and Pseudomonas syringae pv tomato DC3000. Our data suggest that the EIRP1 E3 ligase positively regulates plant disease resistance by mediating proteolysis of the negative regulator VpWRKY11 via degradation by the 26S proteasome.
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.|Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling, Shaanxi, 712100, China.|State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.
authors.forename: Yihe
authors.initials: Y
authors.lastname: Yu
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.|Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling, Shaanxi, 712100, China.|State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.
authors.forename: Weirong
authors.initials: W
authors.lastname: Xu
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.|Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling, Shaanxi, 712100, China.|State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Wang
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.|Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling, Shaanxi, 712100, China.|State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.|Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling, Shaanxi, 712100, China.|State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.
authors.forename: Wenkong
authors.initials: W
authors.lastname: Yao
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.|Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling, Shaanxi, 712100, China.|State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.
authors.forename: Yazhou
authors.initials: Y
authors.lastname: Yang
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.|Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling, Shaanxi, 712100, China.|State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Xu
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.|Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling, Shaanxi, 712100, China.|State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.
authors.forename: Fuli
authors.initials: F
authors.lastname: Ma
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.|Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling, Shaanxi, 712100, China.|State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.
authors.forename: Yangjian
authors.initials: Y
authors.lastname: Du
authors.affiliation: College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.|Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling, Shaanxi, 712100, China.|State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, 712100, Shaanxi, China.
authors.forename: Yuejin
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000235:genetics / Q000378:metabolism / Q000382:microbiology; D060467:Disease Resistance / Q000235:genetics*; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D008969:Molecular Sequence Data; D010935:Plant Diseases / Q000235:genetics* / Q000382:microbiology; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D059748:Proteolysis; D044224:Pseudomonas syringae; D054829:RING Finger Domains; D014157:Transcription Factors / Q000378:metabolism*; D014158:Transcription, Genetic; D044767:Ubiquitin-Protein Ligases / Q000378:metabolism*; D027843:Vitis / Q000235:genetics* / Q000378:metabolism / Q000382:microbiology
chemical_list: D010940:Plant Proteins; D014157:Transcription Factors; D044767:Ubiquitin-Protein Ligases
keywords: E3 ubiquitin ligase; Vitis pseudoreticulata; defense response; grapevine; proteolysis; transcription factor
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