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Multiple small-effect alleles of Indica origin enhance high iron-associated stress tolerance in rice under field conditions in west Africa

dc.contributor.authorMelandri, G.
dc.contributor.authorSikirou, M.
dc.contributor.authorArbelaez, J.D.
dc.contributor.authorShittu, A.
dc.contributor.authorSemwal, V.K.
dc.contributor.authorKonaté, K.A.
dc.contributor.authorMaji, A.T.
dc.contributor.authorNgaujah, S.A.
dc.contributor.authorAkintayo, I.
dc.contributor.authorGovinduraj, V.
dc.contributor.authorShi, Y.
dc.contributor.authorAgosto-Perez, F.J.
dc.contributor.authorGreenberg, A.J.
dc.contributor.authorAtlin, G.
dc.contributor.authorRamaiah, V.
dc.contributor.authorMcCouch, S.R.
dc.date.accessioned2021-02-18T10:42:05Z
dc.date.available2021-02-18T10:42:05Z
dc.date.issued2020
dc.identifier.citationMelandri, G., Sikirou, M., Arbelaez, J.D., Shittu, A., Semwal, V.K., Konaté, K.A., ... & McCouch, S.R. (2020). Multiple small-effect alleles of Indica origin enhance high iron-associated stress tolerance in rice under field conditions in west Africa. Frontiers in Plant Science, 11, 1-15.
dc.identifier.issn1664-462X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7050
dc.description.abstractUnderstanding the genetics of field-based tolerance to high iron-associated (HIA) stress in rice can accelerate the development of new varieties with enhanced yield performance in West African lowland ecosystems. To date, few field-based studies have been undertaken to rigorously evaluate rice yield performance under HIA stress conditions. In this study, two NERICA × O. sativa bi-parental rice populations and one O.sativa diversity panel consisting of 296 rice accessions were evaluated for grain yield and leaf bronzing symptoms over multiple years in four West African HIA stress and control sites. Mapping of these traits identified a large number of QTLs and single nucleotide polymorphisms (SNPs) associated with stress tolerance in the field. Favorable alleles associated with tolerance to high levels of iron in anaerobic rice soils were rare and almost exclusively derived from the indica subpopulation, including the most favorable alleles identified in NERICA varieties. These findings highlight the complex genetic architecture underlying rice response to HIA stress and suggest that a recurrent selection program focusing on an expanded indica genepool could be productively used in combination with genomic selection to increase the efficiency of selection in breeding programs designed to enhance tolerance to this prevalent abiotic stress in West Africa.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.format.extent1-15
dc.language.isoen
dc.subjectIron
dc.subjectToxicity
dc.subjectQuantitative Trait Loci
dc.subjectRice
dc.subjectOryza Sativa
dc.subjectGenomes
dc.subjectSingle Nucleotide Polymorphism
dc.titleMultiple small-effect alleles of Indica origin enhance high iron-associated stress tolerance in rice under field conditions in west Africa
dc.typeJournal Article
cg.contributor.affiliationCornell University
cg.contributor.affiliationAfrica Rice Center
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationSchool of Horticulture and Green Landscaping, Bénin
cg.contributor.affiliationEnvironmental Institute for Agricultural Research, Burkina Faso
cg.contributor.affiliationNational Root Crops Research Institute, Nigeria
cg.contributor.affiliationSierra Leone Agricultural Research Institute
cg.contributor.affiliationCentral Agricultural Research Institute, Liberia
cg.contributor.affiliationBayesic Research, United States
cg.contributor.affiliationBill & Melinda Gates Foundation
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryLiberia
cg.coverage.countryNigeria
cg.coverage.hubCentral Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidMELANDRI:2021
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectFood Security
cg.iitasubjectGenetic Improvement
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectPlant Production
cg.journalFrontiers in Plant Science
cg.notesOpen Access Journal; Published online: 15 Jan 2021
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3389/fpls.2020.604938
cg.futureupdate.requiredNo


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