Chromosome evolution and improved cytogenetic maps of the Y chromosome in cattle, zebu, river buffalo, sheep and goat

被引：53

作者：

Di Meo G.P. ^{[1
]}

Perucatti A. ^{[1
]}

Floriot S. ^{[2
]}

Incarnato D. ^{[1
]}

Rullo R. ^{[1
]}

Caputi Jambrenghi ^{[3
]}

Ferretti L. ^{[4
]}

Vonghia G. ^{[3
]}

Cribiu E. ^{[2
]}

Eggen A. ^{[2
]}

Iannuzzi L. ^{[1
]}

机构：

[1] National Research Council (CNR), ISPAAM, Laboratory of Animal Cytogenetics and Gene Mapping, 80147 Naples

[2] Department of Animal Genetics, Laboratory of Biochemical Genetics and Cytogenetics, INRA, Jouy-en-Josas

[3] Department of Animal Production, Agricultural Faculty of Sciences, Bari

[4] Department of Genetics and Microbiology, Faculty of Science, Pavia

来源：

Chromosome Research | 2005年 / 13卷 / 4期

关键词：

Bovidae; Cytogenetic; Evolution; In-situ hybridization; Y chromosome;

D O I：

10.1007/s10577-005-2688-4

中图分类号：

学科分类号：

摘要：

Comparative FISH-mapping among Y chromosomes of cattle (Bos taurus, 2n = 60, BTA, submetacentric Y chromosome), zebu (Bos indicus, 2n = 60, BIN, acrocentric Y chromosome but with visible small p-arms), river buffalo (Bubalus bubalis, 2n = 50, BBU, acrocentric Y chromosome), sheep (Ovis aries, 2n = 54, OAR, small metacentric Y chromosome) and goat (Capra hircus, 2n = 60, CHI, Y-chromosome as in sheep) was performed to extend the existing cytogenetic maps and improve the understanding of karyotype evolution of these small chromosomes in bovids. C- and R-banding comparison were also performed and both bovine and caprine BAC clones containing the SRY, ZFY, UMN0504, UMN0301, UMN0304 and DYZ10 loci in cattle and DXYS3 and SLC25A6 in goat were hybridized on R-banded chromosomes by FISH. The main results were the following: (a) Y-chromosomes of all species show a typical distal positive C-band which seems to be located at the same region of the typical distal R-band positive; (b) the PAR is located at the telomeres but close to both R-band positive and ZFY in all species; (c) ZFY is located opposite SRY and on different arms of BTA, BIN, OAR/CHI Y chromosomes and distal (but centromeric to ZFY) in BBU-Y; (d) BTA-Y and BIN-Y differ as a result of a centromere transposition or pericentric inversion since they retain the same gene order along their distal chromosome regions and have chromosome arms of different size; (e) BTA-Y and BBU-Y differ in a pericentric inversion with a concomitant loss or gain of heterochromatin; (f) OAR/CHI-Y differs from BBU-Y for a pericentric inversion with a major loss of heterochromatin and from BTA and BIN for a centromere transposition followed by the loss of heterochromatin. © 2005 Springer.

引用

页码：349 / 355

页数：6

共 24 条

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