ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2008
FISH mapping and molecular organization of the major repetitive sequences of tomato.
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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35 citing papers in PubMed, 82 citations in OpenAlex.
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- Comparative analysis of repetitive sequences among species from the potato and the tomato clades.Annals of botany · 2019Article
- Highly distinct chromosomal structures in cowpea (Vigna unguiculata), as revealed by molecular cytogenetic analysis.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2016Article
- Application of a modified drop method for high-resolution pachytene chromosome spreads in two Phalaenopsis species.Molecular cytogenetics · 2016Article
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- A Deluge of Complex Repeats: The Solanum Genome.PloS one · 2015Article
- Chromosomal organizations of major repeat families on potato (Solanum tuberosum) and further exploring in its sequenced genome.Molecular genetics and genomics : MGG · 2014Article
- Fluorescence in situ hybridization and optical mapping to correct scaffold arrangement in the tomato genome.G3 (Bethesda, Md.) · 2014Article
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- Hypomethylation of cytosine residues in cold-sensitive regions of Cestrum strigilatum (Solanaceae).Genetics and molecular biology · 2012Article
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Authors and funding
11 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This paper presents a bird's-eye view of the major repeats and chromatin types of tomato. Using fluorescence in-situ hybridization (FISH) with Cot-1, Cot-10 and Cot-100 DNA as probes we mapped repetitive sequences of different complexity on pachytene complements. Cot-100 was found to cover all heterochromatin regions, and could be used to identify repeat-rich clones in BAC filter hybridization. Next we established the chromosomal locations of the tandem and dispersed repeats with respect to euchromatin, nucleolar organizer regions (NORs), heterochromatin, and centromeres. The tomato genomic repeats TGRII and TGRIII appeared to be major components of the pericentromeres, whereas the newly discovered TGRIV repeat was found mainly in the structural centromeres. The highly methylated NOR of chromosome 2 is rich in [GACA](4), a microsatellite that also forms part of the pericentromeres, together with [GA](8), [GATA](4) and Ty1-copia. Based on the morphology of pachytene chromosomes and the distribution of repeats studied so far, we now propose six different chromatin classes for tomato: (1) euchromatin, (2) chromomeres, (3) distal heterochromatin and interstitial heterochromatic knobs, (4) pericentromere heterochromatin, (5) functional centromere heterochromatin and (6) nucleolar organizer region.
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