X chromosome evolution in the suni and eland antelope: detection of homologous regions by fluorescence in situ hybridization and G-banding

1997 ◽  
Vol 77 (3-4) ◽  
pp. 218-222 ◽  
Author(s):  
T.J. Robinson ◽  
W.R. Harrison ◽  
Ponce de León ◽  
F.F.B. Elder
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
X Chromosome ◽  
Chromosome Evolution ◽  
X Chromosome Evolution

Characterization of a small supernumerary ring X chromosome by fluorescence in situ hybridization

1993 ◽  
Vol 47 (8) ◽  
pp. 1153-1156 ◽  
Author(s):  
Alessandra M. V. Duncan ◽  
Athen Macdonald ◽  
Carolyn J. Brown ◽  
Daynna Wolff ◽  
Huntington F. Willard ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
X Chromosome

Comparative physical mapping of the 18S-5.8S-26S rDNA in three sorghum species

Genome ◽  
2000 ◽  
Vol 43 (5) ◽  
pp. 918-922 ◽  
Author(s):  
Yijun Sang ◽  
George H Liang
Keyword(s):  
In Situ Hybridization ◽  
Sorghum Bicolor ◽  
Fluorescence In Situ Hybridization ◽  
Chromosome Evolution ◽  
Rdna Locus ◽  
Sorghum Halepense ◽  
Terminal Position ◽  
26S Rdna ◽  
Rdna Sequences

The physical locations of the 18S-5.8S-26S rDNA sequences were examined in three sorghum species by fluorescence in situ hybridization (FISH) using biotin-labeled heterologous 18S-5.8S-26S rDNA probe (pTa71). Each 18S-5.8S-26S rDNA locus occurred at two sites on the chromosomes in Sorghum bicolor (2n = 20) and S. versicolor (2n = 10), but at four sites on the chromosomes of S. halepense (2n = 40) and the tetraploid S. versicolor (2n = 20). Positions of the rDNA loci varied from the interstitial to terminal position among the four accessions of the three sorghum species. The rDNA data are useful for investigation of chromosome evolution and phylogeny. This study excluded S. versicolor as the possible progenitor of S. bicolor.Key words: Sorghum bicolor, Sorghum versicolor, Sorghum halepense, 18S-5.8S-26S rDNA, fluorescence in situ hybridization.

268 IDENTIFICATION OF X- AND Y-BEARING SPERMATOZOA IN SORTED BUFFALO (BUBALUS BUBALIS) SEMEN BY FLUORESCENCE IN SITU HYBRIDIZATION

2009 ◽  
Vol 21 (1) ◽  
pp. 231
Author(s):  
M. Zhang ◽  
X. J. Zhuang ◽  
Y. Q. Lu ◽  
C. H. Hu ◽  
S. S. Lu ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
Y Chromosome ◽  
X Chromosome ◽  
Chromosome Painting ◽  
Fish Method ◽  
Painting Probes ◽  
Flow Cytometry Sorting

Flow cytometry sorting technology has been successfully used to sort the X- and Y-chromosome bearing sperm. Previous studies showed that fluorescence in situ hybridization (FISH) method was a simple and reliable procedure for assessing the effectiveness of separation of X- and Y-sperm in the swine (Kawarasaki T et al. 1998 Theriogenology 50, 625–635) and the bovine (Rens W et al. 2001 Reproduction 121, 541–546). Reports of sex-preselection by flow-cytometry sorting of the X- and Y-sperm were also seen in the buffalo (Presicce GA et al. 2005 Reprod. Dom. Anim. 40, 73–75; Lu YQ et al. 2006 Anim. Reprod. Sci. 100, 192–196). There was, however, no report to date for using the FISH method to assess the purity of the sorted buffalo sperm. The objective of the present study was to verify the purity of flow cytometrically-sorted buffalo X- and Y-sperm by FISH using bovine X- and Y- chromosome painting probes prepared by microdissection. The X- and Y- chromosomes of bovidea were microdissected respectively from the metaphase spreads of Holstein blood cells with a glass needle controlled by a micromanipulator and amplified by degenerate oligo-nucleotide primer-PCR (DOP-PCR) (Mariela N et al. 2005 Genet. Mol. Res. 4, 675–683). The DOP-PCR products of X- and Y- chromosome were labeled with CY3-dUTP and Biotin-11-dUTP, respectively. The buffalo X- or Y-sperm DNA from unsorted semen and sorted semen were hybridized to the labeled probes, respectively. The results showed that the hybridized signals were clearly visible in the metaphase karyotype of bovine and buffalo semen samples. About 47.7% (594/1246) and 48.9% (683/1396) of the unsorted buffalo sperm emitted strong fluorescent signals when assessed by Y- and X-chromosome painting probes, respectively, which was conformed to the sex ratio in normal buffalo sperm (50%:50%). About 86.1% (1529/1776) hybridization signals of the sperm in the sorted X-semen assessed by X-chromosome painting probes were detected, while 82.2% (2232/2716) of the Y-sorted buffalo sperm emitted strong fluorescent signals when assessed by Y-chromosome painting probe. The results of the flow cytometer re-analysis revealed that the proportions of X- and Y-bearing sperm in the sorted semen were 89.6% and 86.7%, respectively. There were no apparent differences between the two assessment methods of sperm separation by flow cytometry re-analysis and by FISH with the X-Y paint probe. In conclusion, bovine X- and Y-chromosome painting probes prepared using microisolation method could be used to verify the purity of the sorted sperm in the buffalo. This study was supported by the Guangxi Department of Science and Technology (0626001-3-1) and National Key Technology R&D Program, The People’s Republic of China (2006BAD04A18). The authors (M. Zhang, X.J. Zhuang, and Y.Q. Lu) contributed equally to this work.

scholarly journals Fundamentally different repetitive element composition of sex chromosomes in Rumex acetosa

2020 ◽  
Vol 127 (1) ◽  
pp. 33-47
Author(s):  
Wojciech Jesionek ◽  
Markéta Bodláková ◽  
Zdeněk Kubát ◽  
Radim Čegan ◽  
Boris Vyskot ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
X Chromosome ◽  
Sex Chromosomes ◽  
Tandem Repeats ◽  
Sex Chromosome ◽  
Rumex Acetosa ◽  
Dioecious Species ◽  
Y Chromosomes

Abstract Background and Aims Dioecious species with well-established sex chromosomes are rare in the plant kingdom. Most sex chromosomes increase in size but no comprehensive analysis of the kind of sequences that drive this expansion has been presented. Here we analyse sex chromosome structure in common sorrel (Rumex acetosa), a dioecious plant with XY1Y2 sex determination, and we provide the first chromosome-specific repeatome analysis for a plant species possessing sex chromosomes. Methods We flow-sorted and separately sequenced sex chromosomes and autosomes in R. acetosa using the two-dimensional fluorescence in situ hybridization in suspension (FISHIS) method and Illumina sequencing. We identified and quantified individual repeats using RepeatExplorer, Tandem Repeat Finder and the Tandem Repeats Analysis Program. We employed fluorescence in situ hybridization (FISH) to analyse the chromosomal localization of satellites and transposons. Key Results We identified a number of novel satellites, which have, in a fashion similar to previously known satellites, significantly expanded on the Y chromosome but not as much on the X or on autosomes. Additionally, the size increase of Y chromosomes is caused by non-long terminal repeat (LTR) and LTR retrotransposons, while only the latter contribute to the enlargement of the X chromosome. However, the X chromosome is populated by different LTR retrotransposon lineages than those on Y chromosomes. Conclusions The X and Y chromosomes have significantly diverged in terms of repeat composition. The lack of recombination probably contributed to the expansion of diverse satellites and microsatellites and faster fixation of newly inserted transposable elements (TEs) on the Y chromosomes. In addition, the X and Y chromosomes, despite similar total counts of TEs, differ significantly in the representation of individual TE lineages, which indicates that transposons proliferate preferentially in either the paternal or the maternal lineage.

890: Multiple Fluorescence in Situ Hybridization (FISH) Probes Increase Sensitivity for Detection of Bladder Cancer

2006 ◽  
Vol 175 (4S) ◽  
pp. 287-288 ◽  
Author(s):  
Juliann M. Dziubinski ◽  
Michael F. Sarosdy ◽  
Paul R. Kahn ◽  
Mark D. Ziffer ◽  
William R. Love ◽  
...  
Keyword(s):  
Bladder Cancer ◽  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization
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