Overview
TitleGenetic Mapping of Resistance to Meloidogyne arenaria in Arachis stenosperma: A New Source of Nematode Resistance for Peanut
AuthorsLeal-Bertioli SCM, Moretzsohn MC, Roberts PA, Ballen-Taborda C, Borba TCO, Valdisser PA, Vianello RP, Araujo ACG, Guimaraes PM, Bertioli DJ
TypeJournal
Media TitleG3: Genes, Genomes, Genetics
Volume6
Issue2
Year2016
Page(s)377-390
CitationLeal-Bertioli SCM, Moretzsohn MC, Roberts PA, Ballen-Taborda C, Borba TCO, Valdisser PA, Vianello RP, Araujo ACG, Guimaraes PM, Bertioli DJ. (2016). Genetic Mapping of Resistance to Meloidogyne arenaria in Arachis stenosperma: A New Source of Nematode Resistance for Peanut. G3: Genes, Genomes, Genetics. 6:2 377-390

Abstract

Root-knot nematodes (RKN; Meloidogyne sp.) are a major threat to crops in tropical and subtropical regions worldwide. The use of resistant crop varieties is the preferred method of control because nematicides are expensive, and hazardous to humans and the environment. Peanut (Arachis hypogaea) is infected by four species of RKN, the most damaging being M. arenaria, and commercial cultivars rely on a single source of resistance. In this study, we genetically characterize RKN resistance of the wild Arachis species A. stenosperma using a population of 93 recombinant inbred lines developed from a cross between A. duranensis and A. stenosperma. Four quantitative trait loci (QTL) located on linkage groups 02, 04, and 09 strongly influenced nematode root galling and egg production. Drought-related, domestication and agronomically relevant traits were also evaluated, revealing several QTL. Using the newly available Arachis genome sequence, easy-to-use KASP (kompetitive allele specific PCR) markers linked to the newly identified RKN resistance loci were developed and validated in a tetraploid context. Therefore, we consider that A. stenosperma has high potential as a new source of RKN resistance in peanut breeding programs.
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Pages

Properties
Additional details for this publication include:
Property NameValue
Publication Speciesarachis
URLhttp://www.g3journal.org/content/6/2/377
KeywordsArachis, Peanut, QTL, Root-knot nematode resistance, Marker-assisted selection, Drought, Yield, Introgression
Cross References
This publication is also available in the following databases:
DatabaseAccession
DOI: Document Object IdentifierDOI:10.1534/g3.115.023044
PMID: PubMedPMID:26656152
Stocks
This publication contains information about 1 stocks:
Stock NameUniquenaemType
AA_A.duranensis_x_A.stenosperma_dAA_A.duranensis_x_A.stenosperma_dCultivar