Chromosome evolution in the subtribe Bovina (Mammalia, Bovidae): The karyotype of the Cambodian banteng (Bos javanicus birmanicus) suggests that Robertsonian translocations are related to interspecific hybridization

Ropiquet, Anne; Gerbault‐Seureau, Michèle; Deuve, Jane Lynda; Gilbert, Clément; Pagáčová, Eva; Chai, Norin; Rubeš, Jiřı́; Hassanin, Alexandre

doi:10.1007/s10577-008-1262-2

Cited by 29 publications

(23 citation statements)

References 65 publications

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“…The whole chromosome 1 of mithun (B. frontalis) in this study was equivalent to B. taurus chromosomes 2 and 28 (Chi et al, 2005). Two pronounced red signals were seen in the karyotypes of mithun, and three red signals in the hybrids of mithun x Brahman, while four red signals in Brahman cattle ( Figure 4A-D), in good agreement with the centric fusion of bovine rob(2;28) (Gallagher Jr. and Womack, 1992;Chi et al, 2005;Ropiquet et al, 2008), and exclusive rob(1;29) due to very low incidence of rob(1;29) in Brahman cattle (De Luca et al, 2002).…”

Section: Fish Analysissupporting

confidence: 71%

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Karyotype analysis of mithun (Bos frontalis) and mithun bull x Brahman cow hybrids

Qu¹,

He²,

Nie³

et al. 2012

Genet. Mol. Res.

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ABSTRACT. We examined the cytogenetics of mithun (Bos frontalis), a domesticated version of the Asian gaur, and hybrids (F 1 generation) produced by artificial insemination of Brahman cows (Bos indicus) with mithun semen. Reproductive potential was also examined in the F 1 generation and a backcrossed heifer for utilization of heterosis. Metaphase chromosome spreads were examined by conventional staining and fluorescence in situ hybridization hybridized with the entire chromosome 1 of mithun as a specific probe. Chromosome 1 of mithun was found to be equivalent to Bos taurus chromosomes 2 and 28. The karyotype of the female mithun (N = 4) comprised 58 chromosomes, including 54 acrocentric and four large submetacentric chromosomes, without the four acrocentric chromosomes found in the domesticated species B. indicus. However, one of the four female mithuns with a normal mithun phenotype had an abnormal karyotype (2n = 59), indicating introgression from B. taurus or B. indicus. The F 1 karyotypes (N = 6, 3♂3♀) of the mithun bull × Brahman cow cross had 2n = 59, intermediate between their parents; they were consistent heterozygous carriers with a centric fusion involving rob(2;28), as expected. Two pronounced red signals were seen in the mithun karyotypes, three red signals in the mithun × Brahman hybrids, and four red signals in the Brahman cattle, in good agreement with centric fusion of bovine rob(2;28). The female backcross hybrid (N = 1) with 2n = 59 had a similar chromosome configuration to the F 1 karyotypes and had rob(2;28). Such female backcross hybrids normally reproduce; however, the F 1 bulls (N = 3)had not yet generated normal sperm at 24 months.

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Section: Fish Analysissupporting

confidence: 71%

“…FISH protocol was performed essentially as described by Ropiquet et al (2008), Peng et al (2010), and Mao et al (2010). The probe was denaturated at 70°C for 10 min, and annealing was done for 30 min at 37°C.…”

Section: Fluorescence In Situ Hybridization (Fish)mentioning

confidence: 99%

Karyotype analysis of mithun (Bos frontalis) and mithun bull x Brahman cow hybrids

Qu¹,

He²,

Nie³

et al. 2012

Genet. Mol. Res.

View full text Add to dashboard Cite

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“…In the BGA1, the paracentric inversion occurring in the qarm (homoeologous to BTA1) has radically differentiated this biarmed chromosome from that of the rob(1;29) of cattle. This paracentric inversion differentiated also gaur chromosome 1q from the homoeologous 1q in both Bos frontalis readei and Bos javanicus birmanicus, the latter two species having their q-arms similar to the BTA1 (Ropiquet et al 2008). CBG-banding (Fig.…”

Section: Resultsmentioning

confidence: 86%

“…3). Same chromosomes (and centric fusions) are involved in Bos frontalis readei and Bos javanicus birmanicus (Ropiquet et al 2008). the homoeologous BTA2 and BTA28 originating BGA2 were also found in the Indian gaur (Bos gaurus) (Gallagher and Womack, 1992).…”

Section: Resultsmentioning

confidence: 99%

Chromosome evolution of the Malayan gaur (Bos gaurus hubbacki)

et al. 2012

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A GTG-banding comparison between the chromosomes of gaur (Bos gaurus hubbacki, BGA, 2n = 56) and those of domestic cattle (Bos taurus, BTA, 2n = 60) was performed to establish chromosome homoeologies or differences between the two species. The two biarmed chromosomes of gaur (BGA1 and BGA2) were originated by centric fusion translocations between homoeologous cattle chromosomes 1/29 (BGA1) and 2/28 (BGA2). High resolution GTG-banding comparison between BGA1 and BTA1/BTA29 revealed that BGA1q differentiated from BTA1 by a paracentric inversion of a large and proximal chromosome region (BTA1q13-q32). To our knowledge, this is the first case of a bovid biarmed chromosome originated by centric fusion and paracentric inversion during karyotype evolution. The CBG-banding pattern showed clear C-bands in all autosomes, although the two biarmed pairs showed smaller C-bands, especially in BGA2. The results were discussed on the basis of previous results obtained in other bovid species, including the carriers of rob(1;29) of cattle, the most known and widely spread chromosome abnormality in Bos taurus.

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“…That said, the Protein-Kinase C1 gene tree (Supplementary Figure 1) places P. capreolus within the Redunca clade (with 77% bootstrap support) and, given the similar Y chromosome FISH patterns (Figure 3), one may speculate that these shared characters reflect introgressive hybridization in their distant past, although there is no modern evidence to suggest this (in captive settings or in the wild). It is significant, however, that hybridization has been recorded among many species of bovids (Gray, 1972) and has been suggested as a reason for phylogenetic discordance between the mtDNA and nuclear genomes (see Hassanin and Ropiquet, 2007;Ropiquet et al, 2008;Robinson and Ropiquet, 2011).…”

Section: Discussionmentioning

confidence: 99%

Phylogeny and vicariant speciation of the Grey Rhebok, Pelea capreolus

et al. 2013

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A South African endemic antelope, the Grey Rhebok (Pelea capreolus), has long been an evolutionary enigma in bovid systematics-its phylogenetic intractability attributed to its curious combination of derived and primitive morphological attributes and the consequences of a rapid radiation. By using a combination of DNA sequences, chromosomal characteristics and quantitative and qualitative morphological features we show that the species is a sister taxon to a clade that comprises the waterbuck, reedbuck and allies. Our finding of few unambiguous synapomorphies reinforces suggestions of a rapid radiation and highlights the effects of incomplete lineage sorting, including the hemiplasic nature of several chromosomal rearrangements. We investigate these data to address the general question of what may have led to Pelea being both genetically and ecologically distinct from the Reduncini. We argue that its adaptation to exposed habitats, free of standing water, arose by vicariance prompted by increasing aridity of the extreme south/southwestern region of the African continent in the Miocene. Ancestral lineages leading to the extant Redunca and Kobus, on the other hand, retreated to water-abundant refugia in the north during these mostly globally cool phases. The mosaic of water-rich environments provided by the Okavango and the drainage systems in the southwestern extension of the East African Rift system are considered to have facilitated speciation and chromosomal evolution within these antelope.

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Chromosome evolution in the subtribe Bovina (Mammalia, Bovidae): The karyotype of the Cambodian banteng (Bos javanicus birmanicus) suggests that Robertsonian translocations are related to interspecific hybridization

Cited by 29 publications

References 65 publications

Karyotype analysis of mithun (Bos frontalis) and mithun bull x Brahman cow hybrids

Karyotype analysis of mithun (Bos frontalis) and mithun bull x Brahman cow hybrids

Chromosome evolution of the Malayan gaur (Bos gaurus hubbacki)

Phylogeny and vicariant speciation of the Grey Rhebok, Pelea capreolus

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