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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 29, No. 3, 2008, pp. 225-235
Bioline Code: zr08036
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 29, No. 3, 2008, pp. 225-235

 en Cloning, Characterization, and FISH Mapping of Four Satellite DNAs from Black Muntjac ( Muntiacus crinifrons check for this species in other resources ) and Fea's Muntjac (M. feae)
LIU, Yan; NIE, Wen-hui; HUANG, Ling; WANG, Jin-huan; SU, Wei-ting; LIN, Chyi Chyang & YANG, Feng-tang

Abstract

Recent molecular cytogenetic studies demonstrate that extensive centromere-telomere fusions are the main chromosomal rearrangements underlying the karyotypic evolution of extant muntjacs. Although the molecular mechanism of tandem fusions remains unknown, satellite DNA is believed to have facilitated chromosome fusions by non-allelic homologous recombination. Previous studies detected non-random hybridization signals of cloned satellite DNA at the postulated fusion sites on the chromosomes in Indian and Chinese muntjacs. But the genomic distribution and organization of satellite DNAs in other muntjacs have not been investigated. In this study, we have isolated four satellite DNA clones (BMC5, BM700, BM1.1k and FM700) from the black muntjac ( Muntiacus crinifrons check for this species in other resources ) and Fea's muntjac (M. feae), and hybridized these four clones onto chromosomes of four muntjac species (M. reevesi, M. crinifrons, M. gongshanenisis and M. feae). Besides the predominant centromeric signals, non-random interstitial hybridization signals from satellite I and II DNA clones (BMC5, BM700 and FM700) were also observed on the arms of chromosomes of these four muntjacs. Our results provide additional support for the notion that the karyotypes of M. crinifrons, M. feae and M. gongshanensis have evolved from a 2n = 70 ancestral karyotype by a series of chromosome fusions.

Keywords
FISH mapping; Satellite DNA; Muntiacus; Tandem chromosome fusion

 
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Alternative site location: http://www.zoores.ac.cn/

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