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GrainGenes Reference Report: GEN-168-687

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Reference	GEN-168-687
Title	A Chromosome Bin Map of 2148 Expressed Sequence Tag Loci of Wheat Homoeologous Group 7
Journal	Genetics
Year	2004
Volume	168
Pages	687-699
Author	[ Hide all but 1 of 46 ] Hossain KG Kalavacharla V Lazo GR Hegstad J Wentz MJ Kianian PMA Simons K Gehlhar S Rust JL Syamala RR Obeori K Bhamidimarri S Karunadharma P Chao S Anderson OD Qi LL Echalier B Gill BS Linkiewicz AM Ratnasiri A Dubcovsky J Akhunov ED Dvorak J Miftahudin Ross K Gustafson JP Radhawa HS Dilbirligi M Gill KS Peng JH Lapitan NLV Greene RA Bermudez-Kandianis CE Sorrells ME Feril O Pathan MS Nguyen HT Gonzalez-Hernandez JL Conley EJ Anderson JA Choi DW Fenton D Close TJ McGuire PE Qualset CO Kianian SF
Abstract	The objectives of this study were to develop a high-density chromosome bin map of homoeologous group 7 in hexaploid wheat (Triticum aestivum L.), to identify gene distribution in these chromosomes, and to perform comparative studies of wheat with rice and barley. We mapped 2148 loci from 919 EST clones onto group 7 chromosomes of wheat. In the majority of cases the numbers of loci were significantly lower in the centromeric regions and tended to increase in the distal regions. The level of duplicated loci in this group was 24% with most of these loci being localized toward the distal regions. One hundred nineteen EST probes that hybridized to three fragments and mapped to the three group 7 chromosomes were designated landmark probes and were used to construct a consensus homoeologous group 7 map. An additional 49 probes that mapped to 7AS, 7DS, and the ancestral translocated segment involving 7BS also were designated landmarks. Landmark probe orders and comparative maps of wheat, rice, and barley were produced on the basis of corresponding rice BAC/PAC and genetic markers that mapped on chromosomes 6 and 8 of rice. Identification of landmark ESTs and development of consensus maps may provide a framework of conserved coding regions predating the evolution of wheat genomes
External Databases	Pubmed: 15514045
Keyword	barley [ Show all 11 ]

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