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Genome wide association analysis of a stemborer egg induced “call‑for‑help” defence trait in maize

dc.contributor.authorTamiru, A.
dc.contributor.authorPaliwal, R.
dc.contributor.authorManthi, S.J.
dc.contributor.authorOdeny, D.A.
dc.contributor.authorMidega, C.A.
dc.contributor.authorKhan, Z.R.
dc.contributor.authorPickett, J.A.
dc.contributor.authorBruce, T.J.
dc.date.accessioned2021-06-09T09:21:42Z
dc.date.available2021-06-09T09:21:42Z
dc.date.issued2020
dc.identifier.citationTamiru, A., Paliwal, R., Manthi, S.J., Odeny, D.A., Midega, C.A., Khan, Z.R., ... & Bruce, T.J. (2020). Genome wide association analysis of a stemborer egg induced “call-for-help” defence trait in maize. Scientific reports, 10(1), 1-12.
dc.identifier.issn2045-2322
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7129
dc.description.abstractTritrophic interactions allow plants to recruit natural enemies for protection against herbivory. Here we investigated genetic variability in induced responses to stemborer egg-laying in maize Zea mays (L.) (Poaceae). We conducted a genome wide association study (GWAS) of 146 maize genotypes comprising of landraces, inbred lines and commercial hybrids. Plants were phenotyped in bioassays measuring parasitic wasp Cotesia sesamiae (Cameron) (Hymenoptera: Braconidae) attraction to volatiles collected from plants exposed to stemborer Chilo partellus (Swinhoe) (Lepidoptera: Crambidae) eggs. Genotyping-by-sequencing was used to generate maize germplasm SNP data for GWAS. The egg-induced parasitoid attraction trait was more common in landraces than in improved inbred lines and hybrids. GWAS identified 101 marker-trait associations (MTAs), some of which were adjacent to genes involved in the JA-defence pathway (opr7, aos1, 2, 3), terpene biosynthesis (fps3, tps2, 3, 4, 5, 7, 9, 10), benzoxazinone synthesis (bx7, 9) and known resistance genes (e.g. maize insect resistance 1, mir1). Intriguingly, there was also association with a transmembrane protein kinase that may function as a receptor for the egg elicitor and other genes implicated in early plant defence signalling. We report maize genomic regions associated with indirect defence and provide a valuable resource for future studies of tritrophic interactions in maize. The markers identified may facilitate selection of indirect defence by maize breeders.
dc.description.sponsorshipEuropean Union
dc.description.sponsorshipDepartment for International Development, United Kingdom
dc.description.sponsorshipSwedish International Development Cooperation Agency
dc.description.sponsorshipSwiss Agency for Development and Cooperation
dc.description.sponsorshipFederal Democratic Republic of Ethiopia
dc.description.sponsorshipKenyan Government
dc.format.extent1-12
dc.language.isoen
dc.subjectMaize
dc.subjectZea Mays
dc.subjectStem Eating Insects
dc.subjectGenotypes
dc.subjectPests of Plants
dc.subjectStem Borers
dc.titleGenome wide association analysis of a stemborer egg induced “call‑for‑help” defence trait in maize
dc.typeJournal Article
cg.contributor.crpGenebanks
cg.contributor.affiliationInternational Centre of Insect Physiology and Ecology
cg.contributor.affiliationInternational Crop Research Institute for the Semi-Arid Tropics
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationCardiff University
cg.contributor.affiliationKeele University
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryKenya
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidTAMIRU:2020a
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectAgronomy
cg.iitasubjectDisease Control
cg.iitasubjectFood Security
cg.iitasubjectMaize
cg.iitasubjectPests of Plants
cg.journalScientific Reports
cg.notesOpen Access Journal; Published online: 08 Jul 2020
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1038/s41598-020-68075-2
cg.futureupdate.requiredNo
cg.identifier.issue1
cg.identifier.volume10


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