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GrainGenes Reference Report: MBR-5-569

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Reference	MBR-5-569
Title	A polymorphic microsatellite in the limit dextrinase gene of barley (Hordeum vulgare L.)
Journal	Molecular Breeding
Year	1999
Volume	5
Pages	569-577
Author	Li CD Zhang XQ Eckstein P Rossnagel BG Scoles GJ
Abstract	Summary: A DNA fragment containing the exons 16, 17 and intron 16 of the limit dextrinase gene was cloned using a 654 bp cDNA as probe. Intron 16 contained a simple sequence repeat (microsatellite). PCR primers were designed to amplify that microsatellite. Using these primers, the limit dextrinase gene was mapped to the short arm of chromosome 1 (7H) using 150 DH lines from the Steptoe X Morex mapping population. This gene co-segregated with the RFLP marker ABC154A. QTLs for malt extract, alpha-amylase activity, diastatic power and fine-coarse difference previously mapped in the North American Barley Genome Mapping Project have been located in this chromosome region. Five limit dextrinase alleles were detected in 31 barley cultivars with a PIC of 0.75. Ten different alleles/genes were identified in 23 uncultivated Hordeum species or subspecies using these microsatellite primers. The primers also amplified one fragment from wheat and two from oat. This microsatellite should be useful for marker-assisted selection for malting quality
Keyword	[ Hide all but 1 of 51 ] alleles alpha-amylase alpha-amylase activity american barley barley cultivars cdna chromosome chromosome maps cloning diastatic power dna exons gene gene location genetic mapping genetic markers genetic polymorphism genome genome mapping hordeum vulgare intron limit dextrinase loci malt malting malting barley malting quality mapping marker marker assisted selection microsatellite microsatellite primers oat pcr pcr primers pic polymerase chain reaction population primer pullulanase qtl quality quantitative traits rflp rflp marker segregation selection sequence simple sequence repeat wild relatives

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