Exotic alleles contribute to heat tolerance in wheat under field conditions

dc.creatorMolero, G.
dc.creatorCoombes, B.
dc.creatorJoynson, R.
dc.creatorPinto Espinosa, F.
dc.creatorPiñera Chavez, F.J
dc.creatorRivera Amado, A.C.
dc.creatorHall, A.J.W.
dc.creatorReynolds, M.P.
dc.date2022-11-19T01:20:13Z
dc.date2022-11-19T01:20:13Z
dc.date2023
dc.date.accessioned2023-07-17T20:09:42Z
dc.date.available2023-07-17T20:09:42Z
dc.identifierhttps://hdl.handle.net/10883/22262
dc.identifier10.1038/s42003-022-04325-5
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7514016
dc.descriptionGlobal warming is one of the most significant threats to food security. With temperatures predicted to rise and extreme weather events becoming more common we must safeguard food production by developing crop varieties that are more tolerant to heat stress without compromising yield under favourable conditions. By evaluating 149 spring wheat lines in the field under yield potential and heat stressed conditions, we demonstrate how strategic integration of exotic material significantly increases yield under heat stress compared to elite lines, with no significant yield penalty under favourable conditions. Genome-wide association analysis revealed three marker trait associations, which together increase yield under heat stress by over 50% compared to lines without the advantageous alleles and was associated with approximately 2°C lower canopy temperature. We identified an Aegilops tauschii introgression underlying the most significant of these associations. By comparing overlapping recombination of this introgressed segment between lines, we identified a 1.49Mbp region of the introgression responsible for this association that increases yield under heat stress by 32.4%. The genes within this region were extracted from diverse Ae. tauschii genomes, revealing a novel Ae. tauschii MAPK gene, a SOC1 orthologue and a pair of type-B two-component response regulators. Incorporating these exotic alleles into breeding programmes could serve as a pre-emptive strategy to produce high yielding wheat cultivars that are resilient to the effects of future climate uncertainty with no yield penalty under favourable conditions.
dc.languageEnglish
dc.publisherSpringer Nature
dc.rightsCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose
dc.rightsOpen Access
dc.source6
dc.sourceCommunications Biology
dc.source21
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectExotic Material
dc.subjectCanopy Temperature
dc.subjectHEAT TOLERANCE
dc.subjectHEAT STRESS
dc.subjectSPRING WHEAT
dc.subjectFOOD SECURITY
dc.subjectYIELDS
dc.subjectGLOBAL WARMING
dc.subjectEXTREME WEATHER EVENTS
dc.subjectGENETIC MAPS
dc.titleExotic alleles contribute to heat tolerance in wheat under field conditions
dc.typeArticle
dc.typePublished Version
dc.coverageUnited Kingdom


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