Single nucleotide polymorphisms and insertion-deletions for genetic markers and anchoring the maize fingerprint contig physical map

I. Vroh Bi, M. D. McMullen, H. Sanchez-Villeda, S. Schroeder, J. Gardiner, M. Polacco, C. Soderlund, Rod A Wing, Z. Fang, E. H. Coe

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Abstract

Single nucleotide polymorphisms (SNPs) and insertion-deletions (InDels) are becoming important genetic markers for major crop species. In this study we demonstrate their utility for locating fingerprint contigs (FPCs) to the genetic map. To derive SNP and InDel markers, we amplified genomic regions corresponding to 3000 unigenes across 12 maize (Zea mays L.) lines, of which 194 unigenes (6.4%) showed size polymorphism InDels between B73 and Mo17 on agarose gels. The analysis of these InDels in 83 diverse inbred lines showed that InDels are often multiallelic markers in maize. Single nucleotide polymorphism discovery conducted on 592 unigenes revealed that 44% of the unigenes contained B73/Mo17 SNPs, while 8% showed no sequence variation among the 12 inbred lines. On average, SNPs and InDels occurred every 73 and 309 bp, respectively. Multiple SNPs within unigenes led to a SNP haplotype genetic diversity of 0.61 among inbreds. The unigenes were previously assigned to maize FPCs by overgo hybridization. From this set of unigenes, 311 (133 SNP and 178 InDel) loci were mapped on the intermated B73 X Mo17 (IBM) high-resolution mapping population. These markers provided unambiguous anchoring of 129 FPCs and orientation for 30 contigs. The FPC anchored map of maize will be useful for map-based cloning, for genome sequencing efforts in maize, and for comparative genomics in grasses. The amplification primers for all mapped InDel and SNP loci, the diversity information for SNPs and InDels, and the corresponding overgoes to anchor bacterial artificial chromosome (BAC) contigs are provided as genetic resources.

Original languageEnglish (US)
Pages (from-to)12-21
Number of pages10
JournalCrop Science
Volume46
Issue number1
DOIs
StatePublished - Jan 2006

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physical chromosome mapping
single nucleotide polymorphism
unigenes
genetic markers
corn
inbred lines
genomics
loci
bacterial artificial chromosomes
genetic resources
agarose
molecular cloning
haplotypes
hybridization
Zea mays
gels
genetic polymorphism
grasses
genetic variation
genome

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Vroh Bi, I., McMullen, M. D., Sanchez-Villeda, H., Schroeder, S., Gardiner, J., Polacco, M., ... Coe, E. H. (2006). Single nucleotide polymorphisms and insertion-deletions for genetic markers and anchoring the maize fingerprint contig physical map. Crop Science, 46(1), 12-21. https://doi.org/10.2135/cropsci2004.0706

Single nucleotide polymorphisms and insertion-deletions for genetic markers and anchoring the maize fingerprint contig physical map. / Vroh Bi, I.; McMullen, M. D.; Sanchez-Villeda, H.; Schroeder, S.; Gardiner, J.; Polacco, M.; Soderlund, C.; Wing, Rod A; Fang, Z.; Coe, E. H.

In: Crop Science, Vol. 46, No. 1, 01.2006, p. 12-21.

Research output: Contribution to journalArticle

Vroh Bi, I, McMullen, MD, Sanchez-Villeda, H, Schroeder, S, Gardiner, J, Polacco, M, Soderlund, C, Wing, RA, Fang, Z & Coe, EH 2006, 'Single nucleotide polymorphisms and insertion-deletions for genetic markers and anchoring the maize fingerprint contig physical map', Crop Science, vol. 46, no. 1, pp. 12-21. https://doi.org/10.2135/cropsci2004.0706
Vroh Bi, I. ; McMullen, M. D. ; Sanchez-Villeda, H. ; Schroeder, S. ; Gardiner, J. ; Polacco, M. ; Soderlund, C. ; Wing, Rod A ; Fang, Z. ; Coe, E. H. / Single nucleotide polymorphisms and insertion-deletions for genetic markers and anchoring the maize fingerprint contig physical map. In: Crop Science. 2006 ; Vol. 46, No. 1. pp. 12-21.
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