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Mol. Cells 2002; 13(3): 413-418

Published online January 1, 1970

© The Korean Society for Molecular and Cellular Biology

Karyotype Analysis of a Korean Cucumber Cultivar (Cucumis sativus L. cv. Winter Long) Using C-banding and Bicolor Fluorescence in situ Hybridization

Dal-Hoe Koo, Yoonkang Hur, Dong-Chun Jin, Jae-Wook Bang

Abstract

An intensive karyotype analysis of a Korean cucumber cultivar (Cucumis sativus L. cv. Winter Long) was car-ried out with three different methods. These included Feulgen staining, Giemsa C-banding, and fluorescence in situ hybridization (FISH). The mitotic chromosomes of the cucumber (2n = 2x = 14) were characterized, based on the length and arm ratio values. A C-banding analysis showed dark stains on the centromeric, te-lomeric, and intercalary regions of the chromosomes, except that chromosome 2 had a heavy staining in the long arm. Bicolor FISH, using 45S and 5S rDNA probes, provided additional information to identify cucumber chromosomes. The signals for 45S rDNA were detected on the pericentromeric regions of chro-mosomes 1, 2, and 4. The signals for 5S rDNA were on the short arm of chromosome 5. Similar band patterns (as the C-banding) were observed when the chromo-somes were counter-stained with 4?6-diamidino-2-phenyoindole (DAPI). The data implied that the karyotype of the Korean cucumber cultivar is peculiar and different from previous reports.

Keywords C-banding, Bicolor FISH, Karyo, Cucumis sativus L.

Article

Research Article

Mol. Cells 2002; 13(3): 413-418

Published online June 30, 2002

Copyright © The Korean Society for Molecular and Cellular Biology.

Karyotype Analysis of a Korean Cucumber Cultivar (Cucumis sativus L. cv. Winter Long) Using C-banding and Bicolor Fluorescence in situ Hybridization

Dal-Hoe Koo, Yoonkang Hur, Dong-Chun Jin, Jae-Wook Bang

Abstract

An intensive karyotype analysis of a Korean cucumber cultivar (Cucumis sativus L. cv. Winter Long) was car-ried out with three different methods. These included Feulgen staining, Giemsa C-banding, and fluorescence in situ hybridization (FISH). The mitotic chromosomes of the cucumber (2n = 2x = 14) were characterized, based on the length and arm ratio values. A C-banding analysis showed dark stains on the centromeric, te-lomeric, and intercalary regions of the chromosomes, except that chromosome 2 had a heavy staining in the long arm. Bicolor FISH, using 45S and 5S rDNA probes, provided additional information to identify cucumber chromosomes. The signals for 45S rDNA were detected on the pericentromeric regions of chro-mosomes 1, 2, and 4. The signals for 5S rDNA were on the short arm of chromosome 5. Similar band patterns (as the C-banding) were observed when the chromo-somes were counter-stained with 4?6-diamidino-2-phenyoindole (DAPI). The data implied that the karyotype of the Korean cucumber cultivar is peculiar and different from previous reports.

Keywords: C-banding, Bicolor FISH, Karyo, Cucumis sativus L.

Mol. Cells
Feb 28, 2023 Vol.46 No.2, pp. 69~129
COVER PICTURE
The bulk tissue is a heterogeneous mixture of various cell types, which is depicted as a skein of intertwined threads with diverse colors each of which represents a unique cell type. Single-cell omics analysis untangles efficiently the skein according to the color by providing information of molecules at individual cells and interpretation of such information based on different cell types. The molecules that can be profiled at the individual cell by single-cell omics analysis includes DNA (bottom middle), RNA (bottom right), and protein (bottom left). This special issue reviews single-cell technologies and computational methods that have been developed for the single-cell omics analysis and how they have been applied to improve our understanding of the underlying mechanisms of biological and pathological phenomena at the single-cell level.

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