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Creation and judicious application of a wheat resistance gene atlas

Molecular Plant 2021年第7期14卷 1053-1070页

作者： Amber N.hafeez Sanu Arora Sreya Ghosh David Gilbert Robert L.bowden brande b.h.wul.f John Innes Centre Norwich Research ParkNorwichUK USDA-ARS Hard Winter Wheat Genetics Research UnitManhattanKS 66506USA

Disease-resistance(R)gene cloning in wheat(Triticum aestivum)has been accelerated by the recent surge of genomic resources,facilitated by advances in sequencing technologies and ***,with the challenges of population growth and climate change,it is vital not only to clone and functionally characterize a few handfuls of R genes,but also to do so at a scale that would facilitate the breeding and deployment of crops that can recognize the wide range of pathogen effectors that threaten *** populations are continually changing,and breeders must have tools and resources available to rapidly respond to those changes if we are to safeguard our daily *** meet this challenge,we propose the creation of a wheat R-gene atlas by an international community of researchers and *** atlas would consist of an online directory from which sources of resistance could be identified and deployed to achieve more durable resistance to the major wheat pathogens,such as wheat rusts,blotch diseases,powdery mildew,and wheat *** present a costed proposal detailing how the inter-acting molecular components governing disease resistance could be captured from both the host and the pathogen through biparental mapping,mutational genomics,and whole-genome association *** explore options for the configuration and genotyping of diversity panels of hexaploid and tetraploid wheat,as well as their wild relatives and major pathogens,and discuss how the atlas could inform a dynamic,durable approach to R-gene *** against the current magnitude of wheat yield losses worldwide,recently estimated at 21%,this endeavor presents one route for bringing R genes from the lab to the field at a considerable speed and quantity.

关键词： wheat Triticum aestivum disease resistance R genes association genetics gene stewardship durable resistance

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