Evaluation of Genetic Diversity and Genome-Wide Association Studies of Resistance to Bacterial Wilt Disease in Potato

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cg.authorship.typesCGIAR and developing country instituteen
cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationEgerton Universityen
cg.contributor.affiliationInternational Livestock Research Instituteen
cg.contributor.affiliationUniversity of the Republicen
cg.contributor.affiliationUniversidad Federal de Viçosaen
cg.contributor.affiliationInternational Potato Centeren
cg.contributor.donorGovernment of Norwayen
cg.coverage.countryKenya
cg.coverage.iso3166-alpha2KE
cg.coverage.regionAfrica
cg.creator.identifierThiago Otavio Mendes De Paula: 0000-0003-3695-7827en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1094/phyto-06-24-0188-ren
cg.isijournalISI Journalen
cg.issn1943-7684en
cg.issue3en
cg.journalPhytopathologyen
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaGenetic Innovation
cg.subject.actionAreaResilient Agrifood Systems
cg.subject.cipPOTATOESen
cg.subject.cipGENETIC RESOURCESen
cg.subject.cipGENETICS, GENOMICS AND CROP IMPROVEMENT SCIENCES GGCIen
cg.subject.cipBREEDINGen
cg.subject.cipCROP AND SYSTEMS SCIENCES CSSen
cg.subject.impactAreaNutrition, health and food security
cg.subject.impactAreaClimate adaptation and mitigation
cg.subject.impactAreaEnvironmental health and biodiversity
cg.subject.sdgSDG 2 - Zero hungeren
cg.subject.sdgSDG 13 - Climate actionen
cg.subject.sdgSDG 3 - Good health and well-beingen
cg.volume115en
dc.contributor.authorOkiro, L.A.en
dc.contributor.authorMulwa, R.M.en
dc.contributor.authorOyoo, M.E.en
dc.contributor.authorOjwang, P.en
dc.contributor.authorOtieno, S.en
dc.contributor.authorGaiero, P.en
dc.contributor.authorPereira, G.S.en
dc.contributor.authorMendes, T.en
dc.date.accessioned2025-04-01T16:15:47Zen
dc.date.available2025-04-01T16:15:47Zen
dc.identifier.urihttps://hdl.handle.net/10568/173956
dc.titleEvaluation of Genetic Diversity and Genome-Wide Association Studies of Resistance to Bacterial Wilt Disease in Potatoen
dcterms.abstractThe development of novel improved varieties adapted to unstable environmental conditions is possible through the genetic diversity of breeding materials. Potato is among the most important food crops worldwide; however, there are still significant hindrances to breeding gains attributed to its autotetraploid and highly heterozygous genome. Bacterial wilt caused by the Ralstonia solanacearum species complex is an important disease affecting potato among many economically important crops worldwide. No cultivated potato genotypes have shown a satisfactory level of resistance to bacterial wilt. Nevertheless, resistance can play a crucial role in effective integrated disease management. To understand the genetic landscape of bacterial wilt resistance in cultivated potato, we evaluated the diversity of 192 accessions from the International Potato Center (CIP) using 9,250 single-nucleotide polymorphisms and their associations with the response to bacterial wilt disease evaluated over two independent trials. Twenty-four accessions showed high resistance throughout both trials. Genetic diversity analysis revealed three major clusters whose subgroups were mostly represented by CIP clones derived from common parents. Genome-wide association analyses identified six major hits: two on chromosome 8 and one on each chromosome 2, 4, 5, and 9. These results facilitate genetic dissection of bacterial wilt resistance and enable marker-assisted breeding in elite genotypes for potato breeding initiatives.en
dcterms.accessRightsOpen Access
dcterms.audienceAcademicsen
dcterms.audienceCGIARen
dcterms.audienceDevelopment Practitionersen
dcterms.audienceDonorsen
dcterms.audienceExtensionen
dcterms.audienceFarmersen
dcterms.audienceGeneral Publicen
dcterms.audienceNGOsen
dcterms.audiencePolicy Makersen
dcterms.audienceScientistsen
dcterms.bibliographicCitationOkiro, L.A.; Mulwa, R.M.; Oyoo, M.E.; Ojwang, P.P.O.; Otieno, S.A.; Gaiero, P.; Pereira, G. da S.; Mendes, T. 2025. Evaluation of genetic diversity and genome-wide association studies of resistance to bacterial wilt disease in potato. Phytopathology. ISSN 1943-7684. 115(3), 290–298. https://doi.org/10.1094/PHYTO-06-24-0188-Ren
dcterms.extent290–298en
dcterms.issued2025-03-22en
dcterms.languageen
dcterms.licenseCC-BY-NC-ND-4.0
dcterms.subjectpotatoesen
dcterms.subjectgenome-wide association studiesen
dcterms.subjectplant diseasesen
dcterms.subjectgenetic diversity (resource)en
dcterms.typeJournal Article

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