title: A 2500-locus bin map of wheat homoeologous group 5 provides insights on gene distribution and colinearity with rice.
abstract: We constructed high-density deletion bin maps of wheat chromosomes 5A, 5B, and 5D, including 2338 loci mapped with 1052 EST probes and 217 previously mapped loci (total 2555 loci). This information was combined to construct a consensus chromosome bin map of group 5 including 24 bins. A relatively higher number of loci were mapped on chromosome 5B (38%) compared to 5A (34%) and 5D (28%). Differences in the levels of polymorphism among the three chromosomes were partially responsible for these differences. A higher number of duplicated loci was found on chromosome 5B (42%). Three times more loci were mapped on the long arms than on the short arms, and a significantly higher number of probes, loci, and duplicated loci were mapped on the distal halves than on the proximal halves of the chromosome arms. Good overall colinearity was observed among the three homoeologous group 5 chromosomes, except for the previously known 5AL/4AL translocation and a putative small pericentric inversion in chromosome 5A. Statistically significant colinearity was observed between low-copy-number ESTs from wheat homoeologous group 5 and rice chromosomes 12 (88 ESTs), 9 (72 ESTs), and 3 (84 ESTs).
authors.affiliation: Department of Agronomy and Range Science, University of California, Davis, California 95616, USA.
authors.forename: A M
authors.initials: AM
authors.lastname: Linkiewicz
authors.forename: L L
authors.initials: LL
authors.lastname: Qi
authors.forename: B S
authors.initials: BS
authors.lastname: Gill
authors.forename: A
authors.initials: A
authors.lastname: Ratnasiri
authors.forename: B
authors.initials: B
authors.lastname: Echalier
authors.forename: S
authors.initials: S
authors.lastname: Chao
authors.forename: G R
authors.initials: GR
authors.lastname: Lazo
authors.forename: D D
authors.initials: DD
authors.lastname: Hummel
authors.forename: O D
authors.initials: OD
authors.lastname: Anderson
authors.forename: E D
authors.initials: ED
authors.lastname: Akhunov
authors.forename: J
authors.initials: J
authors.lastname: Dvorák
authors.forename: M S
authors.initials: MS
authors.lastname: Pathan
authors.forename: H T
authors.initials: HT
authors.lastname: Nguyen
authors.forename: J H
authors.initials: JH
authors.lastname: Peng
authors.forename: N L V
authors.initials: NL
authors.lastname: Lapitan
authors.lastname: Miftahudin
authors.forename: J P
authors.initials: JP
authors.lastname: Gustafson
authors.forename: C M
authors.initials: CM
authors.lastname: La Rota
authors.forename: M E
authors.initials: ME
authors.lastname: Sorrells
authors.forename: K G
authors.initials: KG
authors.lastname: Hossain
authors.forename: V
authors.initials: V
authors.lastname: Kalavacharla
authors.forename: S F
authors.initials: SF
authors.lastname: Kianian
authors.forename: D
authors.initials: D
authors.lastname: Sandhu
authors.forename: S N
authors.initials: SN
authors.lastname: Bondareva
authors.forename: K S
authors.initials: KS
authors.lastname: Gill
authors.forename: E J
authors.initials: EJ
authors.lastname: Conley
authors.forename: J A
authors.initials: JA
authors.lastname: Anderson
authors.forename: R D
authors.initials: RD
authors.lastname: Fenton
authors.forename: T J
authors.initials: TJ
authors.lastname: Close
authors.forename: P E
authors.initials: PE
authors.lastname: McGuire
authors.forename: C O
authors.initials: CO
authors.lastname: Qualset
authors.forename: J
authors.initials: J
authors.lastname: Dubcovsky
mesh_terms: D002874:Chromosome Mapping; D032461:Chromosomes, Plant / Q000235:genetics*; D020224:Expressed Sequence Tags; D017343:Genes, Plant; D018745:Genome, Plant; D012275:Oryza / Q000235:genetics*; D016415:Sequence Alignment; D014908:Triticum / Q000235:genetics*