Physical mapping of rDNA and karyotype analysis in Tulipa sinkiangensis and T. schrenkii

doi:10.1016/j.scienta.2018.06.055

	Physical mapping of rDNA and karyotype analysis in Tulipa sinkiangensis and T. schrenkii
	Lan, Yue 1; Qu, Lianwei 2,3; Xin, Haoyang 1; Gong, Huiling 4; Lei, Jiajun 3; Xi, Mengli 1
刊名	SCIENTIA HORTICULTURAE
	2018-10-20
卷号	240 页码:638-644
关键词	Fluorescence in situ hybridization 5S rDNA 45S rDNA Karyotype analysis Tulipa
ISSN号	0304-4238
DOI	10.1016/j.scienta.2018.06.055
英文摘要	The karyotypes of Tulipa sinkiangensis and T. schrenkii were analyzed based on chromosome size and the physical mapping of 5S and 45S ribosomal DNAs (rDNAs) using fluorescence in situ hybridization. The genomes from both species were consistent with the uniform karyotype formula, i.e., having four pairs of submedian and eight pairs of subterminal chromosomes (2n = 2x = 24 = 8sm + 16st). Remarkably, the number and location of 5S rDNA loci were quite different between the two species. A single pair of 5S rDNA loci was detected on both chromosomes 5 in T. sinkiangensis, but the 5S rDNA loci were detected on almost all chromosomes in T. schrenkii, except for chromosomes 4 and 6. For both species, the 45S rDNA loci were localized to telomeric regions of the chromosome-on either the short or long arm. Interestingly, the 5S rDNA and 45S rDNA loci positions and numbers varied among different genotypes of T. schrenkii. We conclude that the two species are close relatives and that a series of genome modifications occurred during the diversification of these two species.
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000439763000080
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155373]
专题	生命科学与工程学院
作者单位	1.Nanjing Forestry Univ, Coll Forestry, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Jiangsu, Peoples R China; 2.Liaoning Acad Agr Sci, Inst Floriculture, Shenyang 110161, Liaoning, Peoples R China; 3.Shenyang Agr Univ, Coll Hort, Shenyang 110866, Liaoning, Peoples R China; 4.Lanzhou Univ Technol, Sch Life Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Lan, Yue,Qu, Lianwei,Xin, Haoyang,et al. Physical mapping of rDNA and karyotype analysis in Tulipa sinkiangensis and T. schrenkii[J]. SCIENTIA HORTICULTURAE,2018,240:638-644.
APA	Lan, Yue,Qu, Lianwei,Xin, Haoyang,Gong, Huiling,Lei, Jiajun,&Xi, Mengli.(2018).Physical mapping of rDNA and karyotype analysis in Tulipa sinkiangensis and T. schrenkii.SCIENTIA HORTICULTURAE,240,638-644.
MLA	Lan, Yue,et al."Physical mapping of rDNA and karyotype analysis in Tulipa sinkiangensis and T. schrenkii".SCIENTIA HORTICULTURAE 240(2018):638-644.