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dc.contributorRajaraman, Jeyaramanen_US
dc.contributorStefanato, Francescaen_US
dc.contributorRehman, Sajiden_US
dc.contributorAghnoum, Rezaen_US
dc.contributorMcGrann, Grahamen_US
dc.contributorBolger, Marieen_US
dc.contributorUsadel, Björnen_US
dc.contributorHedley, Peteen_US
dc.contributorBoyd, Lesleyen_US
dc.contributorNiks, Rientsen_US
dc.contributorSchweizer, Patricken_US
dc.contributorSchaffrath, Ulrichen_US
dc.creatorDelventhal, Rhodaen_US
dc.identifier.citationRhoda Delventhal, Jeyaraman Rajaraman, Francesca Stefanato, Sajid Rehman, Reza Aghnoum, Graham McGrann, Marie Bolger, Björn Usadel, Pete Hedley, Lesley Boyd, Rients Niks, Patrick Schweizer, Ulrich Schaffrath. (4/12/2017). A comparative analysis of nonhost resistance across the two Triticeae crop species wheat and barley. BMC Plant Biology, 17: 232, pp. 1-22.en_US
dc.description.abstractBackground: Nonhost resistance (NHR) protects plants against a vast number of non-adapted pathogens which implicates a potential exploitation as source for novel disease resistance strategies. Aiming at a fundamental understanding of NHR a global analysis of transcriptome reprogramming in the economically important Triticeae cereals wheat and barley, comparing host and nonhost interactions in three major fungal pathosystems responsible for powdery mildew (Blumeria graminis ff. ssp.), cereal blast (Magnaporthe sp.) and leaf rust (Puccinia sp.) diseases, was performed. Results: In each pathosystem a significant transcriptome reprogramming by adapted- or non-adapted pathogen isolates was observed, with considerable overlap between Blumeria, Magnaporthe and Puccinia. Small subsets of these general pathogen-regulated genes were identified as differentially regulated between host and corresponding nonhost interactions, indicating a fine-tuning of the general pathogen response during the course of co-evolution. Additionally, the host- or nonhost-related responses were rather specific for each pair of adapted and non-adapted isolates, indicating that the nonhost resistance-related responses were to a great extent pathosystem-specific. This pathosystem-specific reprogramming may reflect different resistance mechanisms operating against non-adapted pathogens with different lifestyles, or equally, different co-option of the hosts by the adapted isolates to create an optimal environment for infection. To compare the transcriptional reprogramming between wheat and barley, putative orthologues were identified. Within the wheat and barley general pathogen-regulated genes, temporal expression profiles of orthologues looked similar, indicating conserved general responses in Triticeae against fungal attack. However, the comparison of orthologues differentially expressed between host and nonhost interactions revealed fewer commonalities between wheat and barley, but rather suggested different host or nonhost responses in the two cereal species. Conclusions: Taken together, our results suggest independent co-evolutionary forces acting on host pathosystems mirrored by barley- or wheat-specific nonhost responses. As a result of evolutionary processes, at least for the pathosystems investigated, NHR appears to rely on rather specific plant responsesen_US
dc.publisherBioMed Centralen_US
dc.sourceBMC Plant Biology;17:232,(2017) Pagination 1,22en_US
dc.subjectquantitative resistanceen_US
dc.subjectadapted isolateen_US
dc.subjectnon-adapted isolateen_US
dc.subjectnonhost resistanceen_US
dc.subjectglobal transcriptome analysisen_US
dc.titleA comparative analysis of nonhost resistance across the two Triticeae crop species wheat and barleyen_US
dc.typeJournal Articleen_US
cg.contributor.centerRWTH Aachen University - RWTHen_US
cg.contributor.centerLeibniz Institute of Plant Genetics and Crop Plant Research - ipk-gaterslebenen_US
cg.contributor.centerJohn Innes Centre - JICen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerWageningen University & Research Centre - WURen_US
cg.contributor.centerThe James Hutton Institute - JHIen_US
cg.contributor.centerNational Institute of Agricultural Botany - NIABen_US
cg.contributor.crpCRP on Dryland Cereals - DCen_US
cg.contributor.funderArab Fund for Economic and Social Development - AFESDen_US
cg.contributor.projectSustainability and Operation of the Regional Research Centers in a Number of Arab Countries (Phase II)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
dc.identifier.statusOpen accessen_US

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