Fine analysis of a genomic region involved in resistance to Mediterranean corn borer

[Background] Sesamia nonagrioides Lefebvere (Mediterranean corn borer, MCB) is the main pest of maize in the Mediterranean area. QTL for MCB stalk tunneling and grain yield under high MCB infestation had been located at bin 8.03–8.05 (4–21 cM and 10–30 cM respectively) in a previous analysis of the...

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Autores: Jiménez Galindo, José Cruz, Malvar Pintos, Rosa Ana, Butrón Gómez, Ana María, Caicedo Villafuerte, Marlon Brainer, Ordás López, Bernardo
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2018
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/168854
Acesso em linha:http://hdl.handle.net/10261/168854
Access Level:Acceso aberto
Palavra-chave:Sesamia nonagrioides
Zea mays
Heterogeneous inbred families (HIFs)
Near-isogenic lines
Quantitative trait loci
Insect resistance
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spelling Fine analysis of a genomic region involved in resistance to Mediterranean corn borer Jiménez Galindo, José Cruz Malvar Pintos, Rosa Ana Butrón Gómez, Ana María Caicedo Villafuerte, Marlon Brainer Ordás López, Bernardo Sesamia nonagrioides Zea mays Heterogeneous inbred families (HIFs) Near-isogenic lines Quantitative trait loci Insect resistance [Background] Sesamia nonagrioides Lefebvere (Mediterranean corn borer, MCB) is the main pest of maize in the Mediterranean area. QTL for MCB stalk tunneling and grain yield under high MCB infestation had been located at bin 8.03–8.05 (4–21 cM and 10–30 cM respectively) in a previous analysis of the EP42 x EP39 RILs mapping population. The objective of the present work was to study with higher resolution those QTL, and validating and estimating with higher precision their locations and effects. To achieve this objective, we developed a set of 38 heterogeneous inbred families (HIFs) which were near-homozygous in the genome, except in the region under study. The HIFs were evaluated in multiple environments under artificial infestation with MCB and genotyped with SNPs. [Results] The QTL for grain yield under high infestation was confirmed with higher precision and improved reliability at 112.6–116.9 Mb. On the contrary, the location of the QTL for stalk tunneling was not validated probably due to the fixation of some genomic regions during the development of the HIFs. Our study confirmed that the co-localization of the QTL for stalk tunneling and grain yield in the previous study was due to linked genes, not to pleiotropic effects. So, the QTL for grain yield can be used for improving grain yield without undesirable effect on stalk tunneling. [Conclusions] The HIF analysis is useful for validating QTL and for conducting deeper studies in traits related to corn borer resistance. This research was funded by the Plan Estatal de Ciencia y Tecnologia de España within the projects AGL2012–33415 and AGL2015–67313-C2–1-R, both of which were co-financed with European Union funds under the FEDER program. BioMed Central http://hdl.handle.net/10261/168854
title Fine analysis of a genomic region involved in resistance to Mediterranean corn borer
spellingShingle Fine analysis of a genomic region involved in resistance to Mediterranean corn borer
Jiménez Galindo, José Cruz
Sesamia nonagrioides
Zea mays
Heterogeneous inbred families (HIFs)
Near-isogenic lines
Quantitative trait loci
Insect resistance
title_short Fine analysis of a genomic region involved in resistance to Mediterranean corn borer
title_full Fine analysis of a genomic region involved in resistance to Mediterranean corn borer
title_fullStr Fine analysis of a genomic region involved in resistance to Mediterranean corn borer
title_full_unstemmed Fine analysis of a genomic region involved in resistance to Mediterranean corn borer
title_sort Fine analysis of a genomic region involved in resistance to Mediterranean corn borer
author Jiménez Galindo, José Cruz
author_facet Jiménez Galindo, José Cruz
Malvar Pintos, Rosa Ana
Butrón Gómez, Ana María
Caicedo Villafuerte, Marlon Brainer
Ordás López, Bernardo
author_role author
author2 Malvar Pintos, Rosa Ana
Butrón Gómez, Ana María
Caicedo Villafuerte, Marlon Brainer
Ordás López, Bernardo
author2_role author
author
author
author
topic Sesamia nonagrioides
Zea mays
Heterogeneous inbred families (HIFs)
Near-isogenic lines
Quantitative trait loci
Insect resistance
topic_facet Sesamia nonagrioides
Zea mays
Heterogeneous inbred families (HIFs)
Near-isogenic lines
Quantitative trait loci
Insect resistance
description [Background] Sesamia nonagrioides Lefebvere (Mediterranean corn borer, MCB) is the main pest of maize in the Mediterranean area. QTL for MCB stalk tunneling and grain yield under high MCB infestation had been located at bin 8.03–8.05 (4–21 cM and 10–30 cM respectively) in a previous analysis of the EP42 x EP39 RILs mapping population. The objective of the present work was to study with higher resolution those QTL, and validating and estimating with higher precision their locations and effects. To achieve this objective, we developed a set of 38 heterogeneous inbred families (HIFs) which were near-homozygous in the genome, except in the region under study. The HIFs were evaluated in multiple environments under artificial infestation with MCB and genotyped with SNPs.
publishDate 2018
format article
status_str publishedVersion
url http://hdl.handle.net/10261/168854
eu_rights_str_mv openAccess
publisher BioMed Central
institution Consejo Superior de Investigaciones Científicas (CSIC)
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
_version_ 1878434913742487552
publishDateSort 2018
author_browse Butrón Gómez, Ana María
Caicedo Villafuerte, Marlon Brainer
Jiménez Galindo, José Cruz
Malvar Pintos, Rosa Ana
Ordás López, Bernardo
publisherStr BioMed Central
score 6,924472

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