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Integration of retrotransposons-based markers in a linkage map of barley

Rodriguez, Monica and O’Sullivan, Donal and Donini, Paolo and Papa, Roberto and Chiapparino, Elena and Leigh, Fiona and Attene, Giovanna (2006) Integration of retrotransposons-based markers in a linkage map of barley. Molecular Breeding, Vol. 17 (2), p. 173-184. eISSN 1572-9788. Article.

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DOI: 10.1007/s11032-005-4885-4


A deeper understanding of random markers is important if they are to be employed for a range of objectives. The sequence specific amplified polymorphism (S-SAP) technique is a powerful genetic analysis tool which exploits the high copy number of retrotransposon long terminal repeats (LTRs) in the plant genome. The distribution and inheritance of S-SAP bands in the barley genome was studied using the Steptoe · Morex (S · M) double haploid (DH) population. Six S-SAP primer combinations generated 98 polymorphic bands, and map positions were assigned to all but one band. Eight putative co-dominant loci were detected, representing 16 of the mapped markers. Thus at least 81 of the mapped S-SAP loci were dominant. The markers were distributed along all of the seven chromosomes and a tendency to cluster was observed. The distribution of S-SAP markers over the barley genome concurred with the knowledge of the high copy number of retrotransposons in plants. This experiment has demonstrated the potential for the S-SAP technique to be applied in a range of analyses such as genetic fingerprinting, marker assisted breeding, biodiversity assessment and phylogenetic analyses.

Item Type:Article
ID Code:4157
Uncontrolled Keywords:Barley, molecular mapping, retrotransposons, S-SAP (Sequence-Specific Amplified Polymorphism) markers
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/07 Genetica agraria
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze agronomiche e genetica vegetale agraria
Publisher:Springer Netherlands
Deposited On:12 Jul 2010 13:59

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