Identification of Arabidopsis accession with resistance to Botrytis cinerea by natural variation analysis, and characterization of the resistance response
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概要
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Botrytis cinerea is a ubiquitous necrotrophic fungal pathogen that infects over 200 different plant species. We have analyzed 17 Arabidopsis ecotypes for natural variations in their susceptibility to B. cinerea, and found compatible and incompatible Arabidopsis–Botrytis interactions. We determined that Arabidopsis ecotype Ler is resistant to 5 B. cinerea isolates used in this study. To further investigate the roles of the salicylic acid (SA)-dependent defense response pathways against B. cinerea, we inoculated various Arabidopsis mutants with the pathogen. Arabidopsis Ler plants expressing the nahG gene inoculated with B. cinerea showed as much resistance as the parental plants (Ler-wild type). The sgt1b-1 and rar1-10 mutants also showed resistance to the pathogen. In this study, we discuss the natural variations in the symptoms observed among various ecotypes upon inoculation with B. cinerea. In addition, SA plays only a minor role in preventing systemic infection with B. cinerea.
著者
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Narusaka Mari
Research Institute For Biological Sciences
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SHIRAISHI Tomonori
Laboratory of Plant Pathology & Genetic Engineering, Faculty of Agriculture, Okayama University
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Narusaka Yoshihiro
Research Institute for Biological Sciences
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Iuchi Atsuko
Experimental Plant Division, RIKEN Bio Resource Center
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Yao Nan
State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University
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Iuchi Satoshi
Experimental Plant Division, RIKEN Bio Resource Center
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