PMID- 21124018 OWN - NLM STAT- MEDLINE DCOM- 20110406 LR - 20110210 IS - 1424-859X (Electronic) IS - 1424-8581 (Linking) VI - 132 IP - 4 DP - 2011 TI - Cytotypes of Kirk's dik-dik (Madoqua kirkii,Bovidae) show multiple tandem fusions. PG - 255-63 LID - 10.1159/000322483 [doi] AB - Madoqua kirkii, a miniature African antelope, is noted for extensive chromosomal variation that has been categorized in four distinct cytotypes (A-D). In this investigation, we analyzed the A cytotype (2n = 46, FN = 48) using a suite of molecular cytogenetic approaches that entailed (i) whole chromosome and subchromosomal painting by fluorescence in situ hybridization (FISH), (ii) the study of Madoqua centromeric-specific DNA derived from pooled DNA obtained from the centromeric regions of the acrocentric chromosomes, and (iii) DNA from the telomere:centromere junctions of tandemly fused chromosomes. DNA from these sources was used to probe for the persistence of interstitial satellite DNA and residual centromeric sequences in the tandem and centric fusion junctions by PCR and FISH. The analyses show centromeric sequences at two of the six tandem fusion junctions. These data, and those of hybrid specimens (A x B cytotypes) in conjunction with published information permitted an interpretation of the probable sequence of chromosomal rearrangements among the M. kirkii cytotypes. We discuss the findings in the context of chromosomal evolution in these antelopes, and the implications that these hold for ex-situ breeding programs of the species. CI - Copyright (c) 2010 S. Karger AG, Basel. FAU - Cernohorska, H AU - Cernohorska H AD - Veterinary Research Institute, Brno, Czech Republic. FAU - Kubickova, S AU - Kubickova S FAU - Vahala, J AU - Vahala J FAU - Robinson, T J AU - Robinson TJ FAU - Rubes, J AU - Rubes J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101203 PL - Switzerland TA - Cytogenet Genome Res JT - Cytogenetic and genome research JID - 101142708 RN - 0 (DNA, Satellite) SB - IM MH - Animals MH - Antelopes/*genetics MH - Base Sequence MH - Centromere/*genetics MH - Chromosome Banding/methods MH - Chromosome Painting/methods MH - Chromosomes, Mammalian/genetics MH - DNA, Satellite/genetics MH - *Evolution, Molecular MH - Female MH - In Situ Hybridization, Fluorescence/methods MH - Karyotyping/methods MH - Male MH - Telomere/genetics EDAT- 2010/12/03 06:00 MHDA- 2011/04/07 06:00 CRDT- 2010/12/03 06:00 PHST- 2010/09/23 00:00 [accepted] PHST- 2010/12/03 06:00 [entrez] PHST- 2010/12/03 06:00 [pubmed] PHST- 2011/04/07 06:00 [medline] AID - 000322483 [pii] AID - 10.1159/000322483 [doi] PST - ppublish SO - Cytogenet Genome Res. 2011;132(4):255-63. doi: 10.1159/000322483. Epub 2010 Dec 3.