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. 1992 Dec 11;20(23):6201–6207. doi: 10.1093/nar/20.23.6201

PFGE-resolved RFLP analysis and long range restriction mapping of the DNA of Arabidopsis thaliana using whole YAC clones as probes.

I Bancroft 1, L Westphal 1, R Schmidt 1, C Dean 1
PMCID: PMC334505  PMID: 1361981

Abstract

The cleavage patterns of 23 rare-cutting restriction endonucleases (rcREs) on high molecular weight DNA, isolated from leaves of Arabidopsis thaliana (Arabidopsis), have been analysed using pulsed field gel electrophoresis (PFGE). The DNA digested with rcREs can be used for restriction fragment length polymorphism (RFLP) analysis. We show that RFLPs are more readily identified in restriction fragments that require resolution by PFGE than in smaller restriction fragments. Taking advantage of the low dispersed repetitive DNA content of the Arabidopsis genome, whole yeast artificial chromosomes (YACs) were used as probes to PFGE resolved genomic DNA. This enabled whole YAC clones to be used as RFLP markers and long range restriction maps to be constructed. These techniques should enhance the analysis of regions of the genome of Arabidopsis (and other organisms with low levels of dispersed repetitive DNA) that are the subject of chromosome walking strategies to isolate particular loci.

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