Evidence map›Paper›PMID 23700277›Full record

ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2013

Tobacco karyotyping by accurate centromere identification and novel repetitive DNA localization.

Fukashi Shibata, Kiyotaka Nagaki, Etsuko Yokota, Minoru Murata

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Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

Who cites it

7 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Fukashi ShibataInstitute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan.
Kiyotaka Nagaki
Etsuko Yokota
Minoru Murata

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tobacco (Nicotiana tabacum) is an amphidiploid species (2n = 4x = 48, genome constitution SSTT) derived from a natural hybrid between Nicotiana sylvestris (2n = 2x = 24, SS) and Nicotiana tomentosiformis (2n = 2x = 24, TT). Genomic in situ hybridization (GISH), using the genomic DNA from these ancestral species as probes, revealed the chromosomal origins (S or T) and the occurrence of intergenomic translocations in N. tabacum. Fluorescence in situ hybridization (FISH) was also used to distinguish between chromosomes. However, the use of repetitive DNA sequences as probes for FISH analysis is limited by an inability to identify all chromosomes. In addition to this limitation, the occurrence of chromosomal tertiary constrictions can easily lead to the misclassification of chromosomes. To overcome these issues, immunostaining with anti-N. tabacum centromere-specific histone H3 antibody was carried out to determine the centromere position of each chromosome, followed by FISH analysis with ten distinct repetitive DNA probes. This approach allowed us to identify 22 of the 24 chromosome pairs in N. tabacum and revealed novel intergenomic chromosome rearrangements and B-chromosome-like minichromosomes. Hence, the combination of immunostaining with FISH and GISH is critical to accurately karyotype tobacco.

Indexed as

Genome, PlantCentromereChromosomes, PlantDNA, PlantDNA ProbesIn Situ Hybridization, FluorescenceKaryotypingNicotianaRepetitive Sequences, Nucleic AcidDNA, PlantDNA Probes

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.