Karyotype analysis of three Solanum plants using combined PI-DAPI staining and double fluorescence in situ hybridization with 45S and 5S rDNA probes

2011 ◽  
Vol 10 (82) ◽  
Author(s):  
JIANG Xiang-Hui
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
Karyotype Analysis ◽  
5S Rdna ◽  
Dapi Staining

scholarly journals Fluorescence In Situ Hybridization (FISH) Analysis of the Locations of the Oligonucleotides 5S rDNA, (AGGGTTT)3, and (TTG)6 in Three Genera of Oleaceae and Their Phylogenetic Framework

Genes ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 375 ◽  
Author(s):  
Xiaomei Luo ◽  
Juncheng Liu
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
5S Rdna ◽  
Fish Analysis ◽  
Cytogenetic Map ◽  
Ligustrum Lucidum ◽  
Starting Point ◽  
Central Regions ◽  
Almost All

We report the cytogenetic map for a collection of species in the Oleaceae, and test similarities among the karyotypes relative to their known species phylogeny. The oligonucleotides 5S ribosomal DNA (rDNA), (AGGGTTT)3, and (TTG)6 were used as fluorescence in situ hybridization (FISH) probes to locate the corresponding chromosomes in three Oleaceae genera: Fraxinus pennsylvanica, Syringa oblata, Ligustrum lucidum, and Ligustrum × vicaryi. Forty-six small chromosomes were identified in four species. (AGGGTTT)3 signals were observed on almost all chromosome ends of four species, but (AGGGTTT)3 played no role in distinguishing the chromosomes but displayed intact chromosomes and could thus be used as a guide for finding chromosome counts. (TTG)6 and 5S rDNA signals discerned several chromosomes located at subterminal or central regions. Based on the similarity of the signal pattern (mainly in number and location and less in intensity) of the four species, the variations in the 5S rDNA and (TTG)6 distribution can be ordered as L. lucidum < L. × vicaryi < F. pennsylvanica < S. oblata. Variations have observed in the three genera. The molecular cytogenetic data presented here might serve as a starting point for further larger-scale elucidation of the structure of the Oleaceae genome, and comparison with the known phylogeny of Oleaceae family.

Variation in highly repetitive DNA composition of heterochromatin in rye studied by fluorescence in situ hybridization

Genome ◽  
1995 ◽  
Vol 38 (6) ◽  
pp. 1061-1069 ◽  
Author(s):  
A. Cuadrado ◽  
N. Jouve ◽  
C. Ceoloni
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
Repetitive Dna ◽  
Dna Sequences ◽  
5S Rdna ◽  
Individual Identification ◽  
Highly Repetitive Dna ◽  
The Individual

The molecular characterization of heterochromatin in six lines of rye has been performed using fluorescence in situ hybridization (FISH). The highly repetitive rye DNA sequences pSc 119.2, pSc74, and pSc34, and the probes pTa71 and pSc794 containing the 25S–5.8S–18S rDNA (NOR) and the 5S rDNA multigene families, respectively, were used. This allowed the individual identification of all seven rye chromosomes and most chromosome arms in all lines. All varieties showed similar but not identical patterns. A standard in situ hybridization map was constructed following the nomenclature system recommended for C-bands. All FISH sites observed appeared to correspond well with C-band locations, but not all C-banding sites coincided with hybridization sites of the repetitive DNA probes used. Quantitative and qualitative differences between different varieties were found for in situ hybridization response at corresponding sites. Variation between plants and even between homologous chromosomes of the same plant was found in open-pollinated lines. In inbred lines, the in situ pattern of the homologues was practically identical and no variation between plants was detected. The observed quantitative and qualitative differences are consistent with a corresponding variation for C-bands detected both within and between cultivars.Key words: fluorescence in situ hybridization, repetitive DNA, rye, Secale cereale, polymorphism.

Karyotype analysis using FISH (fluorescence in situ hybridization) in Fragaria

2012 ◽  
Vol 136 ◽  
pp. 95-100 ◽  
Author(s):  
Il Rae Rho ◽  
Yoon Jung Hwang ◽  
Hyung Il Lee ◽  
Choon-Hwan Lee ◽  
Ki Byung Lim
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
Karyotype Analysis

scholarly journals Karyotype analysis and visualization of 45S rRNA genes using fluorescence in situ hybridization in aroids (Araceae)

2015 ◽  
Vol 9 (2) ◽  
pp. 145-160 ◽  
Author(s):  
Katrijn Van Laere ◽  
Prabhu Shankar Lakshmanan ◽  
Tom Eeckhaut ◽  
Johan Van Huylenbroeck ◽  
Erik Van Bockstaele ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
Karyotype Analysis ◽  
Rrna Genes

Conventional Karyotype and Fluorescence in situ Hybridization (FISH) Technology

2019 ◽  
Author(s):  
Janet M. Cowan
Keyword(s):  
In Situ Hybridization ◽  
High Resolution ◽  
Fluorescence In Situ Hybridization ◽  
Dna Analysis ◽  
Karyotype Analysis ◽  
Hybridization Probe ◽  
Clinical Syndromes ◽  
Degree Of Condensation ◽  
Very High

Karyotype analysis of cells has been in use for many years and has led to the causative genetic change in numerous clinical syndromes, including trisomy 21, Klinefelter, Turner, Prader-Willi and Angelman syndromes. The resolution of the test depends on the degree of condensation of the chromosomes in the karyotype, but even at high resolution (> 800 bands per haploid set) the changes identified are in the order of 5 Mb of DNA.  Fluorescence in situ hybridization (FISH) bridges the gap between the relatively low resolution of karyotype analysis and the very high resolution of DNA analysis. With FISH it is possible to identify smaller changes in individual cells. The size of the change identified correlates with the size of the probe, which vary from 120 kb to 600 kb in size. FISH is widely used to confirm deletions or duplications identified by newer methods, such as array analysis.   This review contains 8 figures, 3 tables, and 25 references. Keywords: Cytogenetics, chromosome, karyotype, chromosomal resolution, tissue culture, fluorescence, hybridization, probe

Sign in / Sign up

Export Citation Format

Share Document