Mapping of 18-26S rDNA loci in four species of the genus Paris by fluorescence in situ hybridization (FISH)

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	Mapping of 18-26S rDNA loci in four species of the genus Paris by fluorescence in situ hybridization (FISH)
	Wang, L; Li, YF ; Tang, RH ; Gu, ZJ
通讯作者	yzxj@vip.163.com
	2004-09-01
发表期刊	ACTA PHYTOTAXONOMICA SINICA
ISSN	0529-1526
卷号	42 期号:5 页码:419-426
摘要	18-26S rDNA loci were mapped on chromosomes in four species of Paris, and the number and position of rDNA sites in these species were compared for analysis of the distribution of the sites. All the plants were diploids, and the genome consisted of five chromosomes, A, B, C, D and E. (1) P. polyphylla var. yunnanensis, 2n = 10 = 6m + 4t. Two 18-26S rDNA loci were detected on the short arms of C and D chromosomes; (2) P. forrestii, 2n = 10 = 6m + 4t. One locus was detected on the long arm of B chromosome, and also two loci on the short arms of C and D chromosomes; (3) P. axialis. 2n = 10 = 6m(2sat) + 4t(2sat) + 1 - 2B. Two loci were detected on the short arms of C and D chromosomes. One locus was detected in the cell with two B-chromosomes (B), but none was detected in that with only one B chromosome, indicating that rRNA gene existed on B chromsome, and an unequal division occurred during mitotic cycle of B-chromosomes. (4) P. daliensis, 2n = 10 = 4m + 2sm + 2st + 2t. One locus was detected on the short arm of D chromosome. The signals of 18-26S rDNA appeared not only in the second constriction but also in the other regions of chromosome. It is noteworthy that one locus was detected in the terminal region on the short arm of C chromosome in all the four species studied.
关键词	Paris Fluorescence In Situ Hybridization (Fish) 18-26s Rdna b Chromosome
学科领域	Plant Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000224380800002
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/13501
专题	离退休
作者单位	1.Sichuan Univ, Coll Life Sci, Chengdu 610064, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
推荐引用方式 GB/T 7714	Wang, L,Li, YF,Tang, RH,et al. Mapping of 18-26S rDNA loci in four species of the genus Paris by fluorescence in situ hybridization (FISH)[J]. ACTA PHYTOTAXONOMICA SINICA,2004,42(5):419-426.
APA	Wang, L,Li, YF,Tang, RH,&Gu, ZJ.(2004).Mapping of 18-26S rDNA loci in four species of the genus Paris by fluorescence in situ hybridization (FISH).ACTA PHYTOTAXONOMICA SINICA,42(5),419-426.
MLA	Wang, L,et al."Mapping of 18-26S rDNA loci in four species of the genus Paris by fluorescence in situ hybridization (FISH)".ACTA PHYTOTAXONOMICA SINICA 42.5(2004):419-426.

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