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Research article2012Peer reviewedOpen access

A collection of INDEL markers for map-based cloning in seven Arabidopsis accessions

Pacurar, Daniel; Pacurar, Monica; Street, Nathaniel; Pop, Tiberia Ioana; Bellini, Catherine

Abstract

The availability of a comprehensive set of resources including an entire annotated reference genome, sequenced alternative accessions, and a multitude of marker systems makes Arabidopsis thaliana an ideal platform for genetic mapping. PCR markers based on INsertions/DELetions (INDELs) are currently the most frequently used polymorphisms. For the most commonly used mapping combination, ColumbiaxLandsberg erecta (Col-0xLer-0), the Cereon polymorphism database is a valuable resource for the generation of polymorphic markers. However, because the number of markers available in public databases for accessions other than Col-0 and Ler-0 is extremely low, mapping using other accessions is far from straightforward. This issue arose while cloning mutations in the Wassilewskija (Ws-4) background. In this work, approaches are described for marker generation in Ws-4 x Col-0. Complementary strategies were employed to generate 229 INDEL markers. Firstly, existing Col-0/Ler-0 Cereon predicted polymorphisms were mined for transferability to Ws-4. Secondly, Ws-0 ecotype Illumina sequence data were analyzed to identify INDELs that could be used for the development of PCR-based markers for Col-0 and Ws-4. Finally, shotgun sequencing allowed the identification of INDELs directly between Col-0 and Ws-4. The polymorphism of the 229 markers was assessed in seven widely used Arabidopsis accessions, and PCR markers that allow a clear distinction between the diverged Ws-0 and Ws-4 accessions are detailed. The utility of the markers was demonstrated by mapping more than 35 mutations in a Col-0xWs-4 combination, an example of which is presented here. The potential contribution of next generation sequencing technologies to more traditional map-based cloning is discussed.

Published in

Journal of Experimental Botany
2012, volume: 63, number: 7, pages: 2491-2501
Publisher: OXFORD UNIV PRESS

SLU Authors

UKÄ Subject classification

Botany

Publication identifier

  • DOI: https://doi.org/10.1093/jxb/err422

Permanent link to this page (URI)

https://res.slu.se/id/publ/45603