title: Localization of seed protein genes on flow-sorted field bean chromosomes.
abstract: Chromosomes from reconstructed field bean (Vicia faba L.) karyotypes were flow-sorted and the DNA was used for the physical localization of seed storage and nonstorage (USP) protein genes using PCR with sequence specific primers. The data were confirmed and refined by using DNA of microisolated chromosomes of other karyotypes as the target for PCR. The specificity of the PCR products was proved by restrictase digestion into fragments of predicted length or by reamplification using 'nested' primers. The genes are located within defined regions of chromosome I (USP = unknown seed protein genes), II (vicilin genes, legumin B3 genes), III (legumin B4 genes), IV (pseudogenes psi 1) and V (legumin A genes and pseudogenes psi 1). Except for the pseudogene derived from the sequence of legumin B4 gene, all members of each gene family are located in one chromosome region exclusively. This approach proved to be useful for localizing genes that cannot be mapped genetically (due to the lack of allelic variants) and might be applied to integrate physical and genetic maps.
authors.affiliation: Institute of Plant Genetics and Crop Plant Research, Gatersleben, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Macas
authors.forename: J
authors.initials: J
authors.lastname: Dolezel
authors.forename: S
authors.initials: S
authors.lastname: Lucretti
authors.forename: U
authors.initials: U
authors.lastname: Pich
authors.forename: A
authors.initials: A
authors.lastname: Meister
authors.forename: J
authors.initials: J
authors.lastname: Fuchs
authors.forename: I
authors.initials: I
authors.lastname: Schubert
mesh_terms: D001483:Base Sequence; D002874:Chromosome Mapping; D017931:DNA Primers; D007887:Fabaceae / Q000235:genetics*; D017343:Genes, Plant; D007621:Karyotyping; D008969:Molecular Sequence Data; D010940:Plant Proteins / Q000235:genetics*; D010946:Plants, Medicinal; D016133:Polymerase Chain Reaction; D011544:Pseudogenes; D055314:Seed Storage Proteins; D012639:Seeds; D000097793:Legumins
chemical_list: D017931:DNA Primers; D010940:Plant Proteins; D055314:Seed Storage Proteins; D000097793:Legumins; C015575:vicilin protein, plant