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GrainGenes Reference Report: TAG-103-827

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Reference	TAG-103-827
Title	Deletion-based physical mapping of barley chromosome 7H
Journal	Theoretical and Applied Genetics
Year	2001
Volume	103
Pages	827-834
Author	Serizawa N [ Show all 7 ]
Abstract	Summary: Chromosomal mutations in barley (Hordeum vulgare, 2n=2x=14, HH) chromosome 7H added to the common wheat (Triticum aestivum, 2n=6x=42, AABBDD) cultivar Chinese Spring were induced genetically by the gametocidal activity of certain alien chromosomes derived from wild species of the genus Aegilops. The rearranged barley chromosomes were characterized by C-banding, FISH and GISH. Twenty two deletion or translocation chromosomes in a hemizygous condition were selected for deletion mapping of 17 AFLP and 28 STS markers that are specific to 7H. Of the 22 breakpoints in chromosome 7H, seven involved the short arm (7HS), 12 the long arm (7HL) and three were in the centromeric region. The seven 7HS breakpoints separated all four 7HS-specific AFLP markers and split the 21 STS markers into six groups. One breakpoint occurred between two STS markers formerly occupying the same position in the genetic map. All seven 7HS breakpoints were separated from each other by either the AFLP or STS markers. The 12 breakpoints in 7HL divided the 13 7HL-specific AFLP markers into seven groups, and the seven STS markers into three groups. On the other hand, the 12 breakpoints in 7HL were divided into six groups by the AFLP markers and into two groups by the STS markers. This deletion-based map was in accordance with previously published genetic and physical maps using the same STS markers. The breakpoints, AFLP markers and STS markers were arrayed in a consistent order
Keyword	[ Hide all but 1 of 55 ] aegilops aegilops cylindrica aestivum aflp aflp marker alien chromosomes arm barley barley chromosomes c banding chinese chinese spring chromosomal deletion chromosome common common wheat cultivar deletion deletion mapping fish gametocidal chromosome gene-rich regions genetic genetic map genome genus genus aegilops gish groups hordeum hordeum vulgare identification induction long long arm map mapping marker mutation physical map physical mapping position region species spring structural changes sts sts marker translocation triticum triticum aestivum vulgare wheat wild wild species

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