Anchoring 9,371 maize expressed sequence tagged unigenes to the bacterial artificial chromosome contig map by two-dimensional overgo hybridization

Jack Gardiner, Steven Schroeder, Mary L. Polacco, Hector Sanchez-Villeda, Zhiwei Fang, Michele Morgante, Tim Landewe, Kevin Fengler, Francisco Useche, Michael Hanafey, Scott Tingey, Hugh Chou, Rod A Wing, Carol Soderlund, Edward H. Coe

Research output: Contribution to journalArticle

89 Citations (Scopus)

Abstract

Our goal is to construct a robust physical map for maize (Zea mays) comprehensively integrated with the genetic map. We have used a two-dimensional 24 X 24 overgo pooling strategy to anchor maize expressed sequence tagged (EST) unigenes to 165,888 bacterial artificial chromosomes (BACs) on high-density filters. A set of 70,716 public maize ESTs seeded derivation of 10,723 EST unigene assemblies. From these assemblies, 10,642 overgo sequences of 40 bp were applied as hybridization probes. BAC addresses were obtained for 9,371 overgo probes, representing an 88% success rate. More than 96% of the successful overgo probes identified two or more BACs, while 5% identified more than 50 BACs. The majority of BACs identified (79%) were hybridized with one or two overgos. A small number of BACs hybridized with eight or more overgos, suggesting that these BACs must be gene rich. Approximately 5,670 overgos identified BACs assembled within one contig, indicating that these probes are highly locus specific. A total of 1,795 megabases (Mb; 87%) of the total 2,050 Mb in BAC contigs were associated with one or more overgos, which are serving as sequence-tagged sites for single nucleotide polymorphism development. Overgo density ranged from less than one overgo per megabase to greater than 20 overgos per megabase. The majority of contigs (52%) hit by overgos contained three to nine overgos per megabase. Analysis of approximately 1,022 Mb of genetically anchored BAC contigs indicates that 9,003 of the total 13,900 overgo-contig sites are genetically anchored. Our results indicate overgos are a powerful approach for generating gene-specific hybridization probes that are facilitating the assembly of an integrated genetic and physical map for maize.

Original languageEnglish (US)
Pages (from-to)1317-1326
Number of pages10
JournalPlant Physiology
Volume134
Issue number4
DOIs
StatePublished - Apr 2004

Fingerprint

Bacterial Artificial Chromosomes
unigenes
bacterial artificial chromosomes
Zea mays
chromosome mapping
hybridization
corn
physical chromosome mapping
Sequence Tagged Sites
Chromosomes, Human, Pair 5
Expressed Sequence Tags
single nucleotide polymorphism
Genes
Single Nucleotide Polymorphism
genes

ASJC Scopus subject areas

  • Plant Science

Cite this

Gardiner, J., Schroeder, S., Polacco, M. L., Sanchez-Villeda, H., Fang, Z., Morgante, M., ... Coe, E. H. (2004). Anchoring 9,371 maize expressed sequence tagged unigenes to the bacterial artificial chromosome contig map by two-dimensional overgo hybridization. Plant Physiology, 134(4), 1317-1326. https://doi.org/10.1104/pp.103.034538

Anchoring 9,371 maize expressed sequence tagged unigenes to the bacterial artificial chromosome contig map by two-dimensional overgo hybridization. / Gardiner, Jack; Schroeder, Steven; Polacco, Mary L.; Sanchez-Villeda, Hector; Fang, Zhiwei; Morgante, Michele; Landewe, Tim; Fengler, Kevin; Useche, Francisco; Hanafey, Michael; Tingey, Scott; Chou, Hugh; Wing, Rod A; Soderlund, Carol; Coe, Edward H.

In: Plant Physiology, Vol. 134, No. 4, 04.2004, p. 1317-1326.

Research output: Contribution to journalArticle

Gardiner, J, Schroeder, S, Polacco, ML, Sanchez-Villeda, H, Fang, Z, Morgante, M, Landewe, T, Fengler, K, Useche, F, Hanafey, M, Tingey, S, Chou, H, Wing, RA, Soderlund, C & Coe, EH 2004, 'Anchoring 9,371 maize expressed sequence tagged unigenes to the bacterial artificial chromosome contig map by two-dimensional overgo hybridization', Plant Physiology, vol. 134, no. 4, pp. 1317-1326. https://doi.org/10.1104/pp.103.034538
Gardiner, Jack ; Schroeder, Steven ; Polacco, Mary L. ; Sanchez-Villeda, Hector ; Fang, Zhiwei ; Morgante, Michele ; Landewe, Tim ; Fengler, Kevin ; Useche, Francisco ; Hanafey, Michael ; Tingey, Scott ; Chou, Hugh ; Wing, Rod A ; Soderlund, Carol ; Coe, Edward H. / Anchoring 9,371 maize expressed sequence tagged unigenes to the bacterial artificial chromosome contig map by two-dimensional overgo hybridization. In: Plant Physiology. 2004 ; Vol. 134, No. 4. pp. 1317-1326.
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