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Genetic diversity and population structure of Striga hermonthica populations from Kenya and Nigeria

dc.contributor.authorUnachukwu, N.N.
dc.contributor.authorMenkir, A.
dc.contributor.authorRabbi, Ismail Y
dc.contributor.authorOluoch, M.
dc.contributor.authorMuranaka, S.
dc.contributor.authorElzein, A.
dc.contributor.authorOdhiambo, G.
dc.contributor.authorFarombi, E.O.
dc.contributor.authorGedil, M.
dc.date.accessioned2019-12-04T11:08:54Z
dc.date.available2019-12-04T11:08:54Z
dc.date.issued2017-07-11
dc.identifier.citationUnachukwu, N., Menkir, A., Rabbi, I.Y., Oluoch, M., Muranaka, S., Elzein, A. ...& Gedil, M. (2017). Genetic diversity and population structure of Striga hermonthica populations from Kenya and Nigeria. Weed Research, 1-10.
dc.identifier.issn0043-1737
dc.identifier.urihttps://hdl.handle.net/20.500.12478/1936
dc.descriptionArticle purchased
dc.description.abstractStriga hermonthica is a parasitic weed that poses a serious threat to the production of economically important cereals in sub-Saharan Africa. The existence of genetic diversity within and between S. hermonthica populations presents a challenge to the successful development and deployment of effective control technologies against this parasitic weed. Understanding the extent of diversity between S. hermonthica populations will facilitate the design and deployment of effective control technologies against the parasite. In the present study, S. hermonthica plants collected from different locations and host crops in Kenya and Nigeria were genotyped using single nucleotide polymorphisms. Statistically significant genetic differentiation (FST = 0.15, P = 0.001) was uncovered between populations collected from the two countries. Also, the populations collected in Nigeria formed three distinct subgroups. Unique loci undergoing selection were observed between the Kenyan and Nigerian populations and among the three subgroups found in Nigeria. Striga hermonthica populations parasitising rice in Kenya appeared to be genetically distinct from those parasitising maize and sorghum. The presence of distinct populations in East and West Africa and in different regions in Nigeria highlights the importance of developing and testing Striga control technologies in multiple locations, including locations representing the geographic regions in Nigeria where genetically distinct subpopulations of the parasite were found. Efforts should also be made to develop relevant control technologies for areas infested with ‘rice-specific’ Striga spp. populations in Kenya.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.format.extent1-10
dc.language.isoen
dc.subjectStriga Hermonthica
dc.subjectPopulation Genetics
dc.subjectEcotypes
dc.subjectWeed Biology
dc.subjectPopulation Genetics
dc.subjectOutlier Analysis
dc.subjectPositive Selection
dc.subjectEcotypes
dc.subjectGenetic Variation
dc.subjectParasitic Weeds
dc.subjectStriga Control Technologies
dc.titleGenetic diversity and population structure of Striga hermonthica populations from Kenya and Nigeria
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationJapan International Research Center for Agricultural Sciences
cg.contributor.affiliationMaseno University
cg.contributor.affiliationUniversity of Ibadan
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.regionWest Africa
cg.coverage.countryKenya
cg.coverage.countryNigeria
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectMaize
cg.iitasubjectPlant Production
cg.iitasubjectWeeds
cg.journalWeed Research
cg.howpublishedFormally Published
cg.accessibilitystatusOpen Access
local.dspaceid85149
cg.targetaudienceScientists
cg.identifier.doihttps://doi.org/10.1111/wre.12260


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