Chromosomal distribution of 18S-25S rDNA in four Lupinus species visualized by fluorescence in situ hybridization.
The number and position of 18S-25S rDNA sites in 4 selected Lupinus species are reported for the first time. L. atlanticus, L. subcarnosus and L. paniculatus had two rDNA loci, while L. albus exhibited only one loci. Among these 4 species, all of them exhibited one large pair of strong signals that extends from the short arm to a NOR on a chromosome satellite. L. atlanticus, L. subcarnosus, L. paniculatus had one more locus of 18-25S rDNA, but a pair of weak hybridization signals were observed in L. paniculatus when 18S-25S rDNA was used as probe. The results are discussed in terms of the evolutionary relationships among these species.
Kong
F
F
College of Bioscience and Biotechnology, Yangzhou University, 225009 Yangzhou, China.
Rudloff
E
E
Snowdon
R J
RJ
Wang
Y P
YP
D032461:Chromosomes, Plant / Q000235:genetics*; D004275:DNA, Ribosomal; D019143:Evolution, Molecular; D031297:Lupinus / Q000235:genetics*; D040641:Quantitative Trait Loci / Q000235:genetics; D012335:RNA, Ribosomal / Q000235:genetics*; D012337:RNA, Ribosomal, 18S / Q000235:genetics*; D013045:Species Specificity
D004275:DNA, Ribosomal; D012335:RNA, Ribosomal; D012337:RNA, Ribosomal, 18S; C065039:RNA, ribosomal, 25S