A fungal avirulence factor encoded in a highly plastic genomic region triggers partial resistance to septoria tritici blotch

© 2018 The Authors. New Phytologist © 2018 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 219(2018), 3 vom: 25. Aug., Seite 1048-1061
1. Verfasser: Meile, Lukas (VerfasserIn)
Weitere Verfasser: Croll, Daniel, Brunner, Patrick C, Plissonneau, Clémence, Hartmann, Fanny E, McDonald, Bruce A, Sánchez-Vallet, Andrea
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't avirulence factor diversifying selection evasion of recognition gene-for-gene interactions genome plasticity plant pathogen quantitative resistance transposable elements mehr... Fungal Proteins Virulence Factors
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520 |a © 2018 The Authors. New Phytologist © 2018 New Phytologist Trust. 
520 |a Cultivar-strain specificity in the wheat-Zymoseptoria tritici pathosystem determines the infection outcome and is controlled by resistance genes on the host side, many of which have been identified. On the pathogen side, however, the molecular determinants of specificity remain largely unknown. We used genetic mapping, targeted gene disruption and allele swapping to characterise the recognition of the new avirulence factor Avr3D1. We then combined population genetic and comparative genomic analyses to characterise the evolutionary trajectory of Avr3D1. Avr3D1 is specifically recognised by wheat cultivars harbouring the Stb7 resistance gene, triggering a strong defence response without preventing pathogen infection and reproduction. Avr3D1 resides in a cluster of putative effector genes located in a genome region populated by independent transposable element insertions. The gene was present in all 132 investigated strains and is highly polymorphic, with 30 different protein variants identified. We demonstrated that specific amino acid substitutions in Avr3D1 led to evasion of recognition. These results demonstrate that quantitative resistance and gene-for-gene interactions are not mutually exclusive. Localising avirulence genes in highly plastic genomic regions probably facilitates accelerated evolution that enables escape from recognition by resistance proteins 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a avirulence factor 
650 4 |a diversifying selection 
650 4 |a evasion of recognition 
650 4 |a gene-for-gene interactions 
650 4 |a genome plasticity 
650 4 |a plant pathogen 
650 4 |a quantitative resistance 
650 4 |a transposable elements 
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650 7 |a Virulence Factors  |2 NLM 
700 1 |a Croll, Daniel  |e verfasserin  |4 aut 
700 1 |a Brunner, Patrick C  |e verfasserin  |4 aut 
700 1 |a Plissonneau, Clémence  |e verfasserin  |4 aut 
700 1 |a Hartmann, Fanny E  |e verfasserin  |4 aut 
700 1 |a McDonald, Bruce A  |e verfasserin  |4 aut 
700 1 |a Sánchez-Vallet, Andrea  |e verfasserin  |4 aut 
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773 1 8 |g volume:219  |g year:2018  |g number:3  |g day:25  |g month:08  |g pages:1048-1061 
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