Query (optional)   in Class  All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data  

---

GrainGenes Reference Report: TAG-100-934

[Submit comment/correction]

Reference	TAG-100-934
Title	Origin of Scm1 and Scm2--two loci conferring resistance to sugarcane mosaic virus (SCMV) in maize
Journal	Theoretical and Applied Genetics
Year	2000
Volume	100
Pages	934-941
Author	Xu ML Melchinger AE Lubberstedt T
Abstract	Summary: Sugarcane mosaic virus (SCMV) causes serious losses of grain and forage yield of maize (Zea mays L.) in Europe. Two dominant genes, Scm1 and Scm2, have been identified to confer resistance to SCMV. Scm1 is located on the short arm of chromosome 6 and Scm2 near the centromere region of chromosome 3. In the present study, resistant, partially resistant, and susceptible maize inbred lines, together with their ancestral lines, were evaluated with molecular markers to trace back the origin of Scm1 and Scm2. The banding patterns indicated that the Scm1 region, originally identified in resistant European line FAP1360A, was derived from its ancestral line FAP954A. The other two resistant European lines, D21 and D32, most likely carry the same Scm1 region, which originated from their common ancestral line A632. This Scm1 region was also present in three partially resistant lines, D09, FAP1396A and FAP693A, but not in the resistant U.S. inbred Pa405. Apart from FAP954A and A632, none of the remaining ancestral lines and none of the susceptible lines harbored the Scm1 region. The Scm2 region present in FAP1360A was obviously transmitted from its ancestral line Co125. However, the presence of the respective Scm2 region was not confirmed in the other three resistant lines (D21, D32 and Pa405), the remaining ancestral lines, and all partially resistant lines by using closely linked markers
Keyword	[ Hide all but 1 of 38 ] amplified fragment length polymorphism ancestral lines banding centromere chromosome conferring resistance disease resistance dominant europe forage gene genetic markers inbred lines its loci maize marker molecular marker mosaic virus origin pedigree quantitative traits resistance resistant rflp scm1 scm1 gene scm2 scm2 gene scmv simple sequence repeat sugarcane sugarcane mosaic potyvirus sugarcane mosaic virus virus yield zea zea mays

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