Consumption of fresh and fresh-cut fruits and vegetables contaminated with Escherichia coli O157:H7 has resulted in hundreds of cases of illness and, in some instances, death. In this study, the influence of cell surface structures of E. coli O157:H7, such as flagella, curli fimbriae, lipopolysaccharides, or exopolysaccharides, on plant defense responses and on survival or colonization on the plant was investigated. The population of the E. coli O157:H7 ATCC 43895 wild-type strain was significantly lower on wild-type Arabidopsis plants than that of the 43895 flagellum-deficient mutant. The population of the E. coli O157:H7 43895 flagellum mutant was greater on both wild-type and npr1-1 mutant (nonexpressor of pathogenesis-related [PR] genes) plants and resulted in less PR gene induction, estimated based on a weak β-glucuronidase (GUS) signal, than did the 43895 wild-type strain. These results suggest that the flagella, among the other pathogen-associated molecular patterns (PAMPs), made a substantial contribution to the induction of plant defense response and contributed to the decreased numbers of the E. coli O157:H7 ATCC 43895 wild-type strain on the wild-type Arabidopsis plant. A curli-deficient E. coli O157:H7 86-24 strain survived better on wild-type Arabidopsis plants than the curli-producing wild-type 86-24 strain did. The curli-deficient E. coli O157:H7 86-24 strain exhibited a GUS signal at a level substantially lower than that of the curli-producing wild-type strain. Curli were recognized by plant defense systems, consequently affecting bacterial survival. The cell surface structures of E. coli O157:H7 have a significant impact on the induction of differential plant defense responses, thereby impacting persistence or survival of the pathogen on plants.<\/p>\n","protected":false},"template":"","mots_cles":[],"class_list":["post-37501","resume","type-resume","status-publish","hentry"],"acf":{"adresse":"Department of Food Science, Rutgers University, New Brunswick, New Jersey, USA.\r\n\r\n","annee":"2012","mois":"6","numero":"78:16","page":"5882-5889","auteurs":[{"ID":37499,"post_author":"0","post_date":"2018-12-04 01:17:41","post_date_gmt":"2018-12-04 00:17:41","post_content":"","post_title":"Seo","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"seo","to_ping":"","pinged":"","post_modified":"2018-12-04 01:17:41","post_modified_gmt":"2018-12-04 00:17:41","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/seo\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":31577,"post_author":"0","post_date":"2018-12-03 23:46:56","post_date_gmt":"2018-12-03 22:46:56","post_content":"","post_title":"Karl R Matthews","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"karl-r-matthews","to_ping":"","pinged":"","post_modified":"2018-12-03 23:46:56","post_modified_gmt":"2018-12-03 22:46:56","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/karl-r-matthews\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"}],"sources":[{"ID":37500,"post_author":"0","post_date":"2018-12-04 01:17:42","post_date_gmt":"2018-12-04 00:17:42","post_content":"","post_title":"Appl Environ Microbiol.","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"appl-environ-microbiol","to_ping":"","pinged":"","post_modified":"2018-12-04 01:17:42","post_modified_gmt":"2018-12-04 00:17:42","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/source\/appl-environ-microbiol\/","menu_order":0,"post_type":"source","post_mime_type":"","comment_count":"0","filter":"raw"}]},"yoast_head":"\n