Query (optional)   in Class  

GrainGenes Reference Report: GNM-43-556

[Submit comment/correction]

Reference
GNM-43-556
Title
Molecular analyses of a repetitive DNA sequence in wheat (Triticum aestivum L.)
Journal
Genome
Year
2000
Volume
43
Pages
556-563
Author
Ueng PP
[ Show all 8 ]
Abstract
Summary: A repetitive sequence designated WE35 was isolated from wheat genomic DNA. This sequence consists of 320-bp repeat unit and represents approximately 0.002% of the total wheat DNA. It is unidirectionally distributed either continuously or discretely in the genome. Ladder-like banding patterns were observed in Southern blots when the wheat genomic DNA was restricted with endonuclease enzymes EcoRI, HincII, NciI, and NdeI, which is characteristic for tandemly organized sequences. Two DNA fragments in p451 were frequently associated with the WE35 repetitive unit in a majority of lambda wheat genomic clones. A 475-bp fragment homologous to the 5'-end long terminal repeat (LTR) of cereal retroelements was also found in some lambda wheat genomic clones containing the repetitive unit. Physical mapping by fluorescence in situ hybridization (FISH) indicated that one pair of wheat chromosomes could be specifically detected with the WE35 positive probe p551. WE35 can be considered a chromosome-specific repetitive sequence. This repetitive unit could be used as a molecular marker for genetic, phylogenetic, and evolutionary studies in the tribe Triticeae
Keyword
banding
[ Show all 45 ]

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.