Results 71 to 80 of about 96,602 (197)

FISH analysis of Zanthoxylum armatum based on oligonucleotides for 5S rDNA and (GAA)6 [PDF]

open access: yes, 2018
Fluorescence in situ hybridization (FISH) using oligonucleotide probes for (GAA)6 (18 bp) and ribosomal DNA (rDNA) (5S rDNA, 41 bp) was applied to analyse Zanthoxylum armatum.
Chen, Liang   +5 more
core   +1 more source

Global‐Scale Patterns of Host Transitions Suggest Contrasting Levels of Specialization Within Rhizoctonia solani

open access: yesEcology and Evolution, Volume 16, Issue 9, September 2026.
We combined a global rDNA‐ITS dataset with TEF‐1α sequences and newly sequenced isolates to examine phylogenetic signal, host associations, and population structure in the soil‐borne pathogen Rhizoctonia solani. Most anastomosis groups formed well‐supported clades, and host‐associated patterns corresponded more strongly with genetic structure than ...
Xin Zhi Khoo   +2 more
wiley   +1 more source

Karyotyping of Brassica amphidiploids using 5S and 25S rDNA as chromosome markers [PDF]

open access: yesHereditas, 2002
Species of Brassica have small, morphologically similar chromosomes, which makes karyotyping difficult using conventional cytogenetic methods. Molecular cytogenetic methods, like fluorescence in situ hybridisation (FISH) have the potential to improve karyotyping through the use of chromosome- or genome-specific markers. Simultaneous application of more
Sylwia, Kulak   +2 more
openaire   +2 more sources

The 5S rDNA family evolves through concerted and birth-and-death evolution in fish genomes: an example from freshwater stingrays

open access: yesBMC Evolutionary Biology, 2011
Background Ribosomal 5S genes are well known for the critical role they play in ribosome folding and functionality. These genes are thought to evolve in a concerted fashion, with high rates of homogenization of gene copies.
Araki Carlos S   +3 more
doaj   +1 more source

The histone deacetylase BpHST1 influences branch angle in white birch (Betula platyphylla)

open access: yesThe Plant Journal, Volume 127, Issue 5, September 2026.
SUMMARY Optimization of tree architecture is essential for advancing sustainable forestry, as appropriate canopy structure can contribute to growth and development. However, the molecular mechanisms that control tree architecture have not been fully characterized. While the putative NAD‐dependent histone deacetylase HST1 was shown to regulate branching
Lili Hou   +4 more
wiley   +1 more source

Dynamics of 5S rDNA in the tilapia (Oreochromis niloticus) genome: repeat units, inverted sequences, pseudogenes and chromosome loci

open access: yes, 2002
In higher eukaryotes, the 5S ribosomal DNA (5S rDNA) is organized in tandem arrays with repeat units composed of a coding region and a non-transcribed spacer sequence (NTS). These tandem arrays can be found on either one or more chromosome pairs. 5S rDNA
Wright, J. M.   +6 more
core   +1 more source

Dynamic distribution patterns of ribosomal DNA and chromosomal evolution in Paphiopedilum, a lady's slipper orchid

open access: yesBMC Plant Biology, 2011
Background Paphiopedilum is a horticulturally and ecologically important genus of ca. 80 species of lady's slipper orchids native to Southeast Asia.
Albert Victor A, Lan Tianying
doaj   +1 more source

Cytogenetic markers using single-sequence probes reveal chromosomal locations of tandemly repetitive genes in scleractinian coral Acropora pruinosa

open access: yesScientific Reports, 2021
The short and similar sized chromosomes of Acropora pose a challenge for karyotyping. Conventional methods, such as staining of heterochromatic regions, provide unclear banding patterns that hamper identification of such chromosomes.
Joshua Vacarizas   +6 more
doaj   +1 more source

TFIIIC complex association and histone modifications at 5S rDNA transgenes.

open access: yes, 2012
A. ChIP for the TFIIIC component, TFIIIC65, shows significant association with endogenous and transgene-5S rDNA (Tg5S rDNA).
Terry Magnuson (28090)   +3 more
core   +1 more source

Uneven Levels of 5S and 45S rDNA Site Number and Loci Variations across Wild Chrysanthemum Accessions

open access: yes, 2022
Ribosomal DNA (rDNA) is an excellent cytogenetic marker owing to its tandem arrangement and high copy numbers. However, comparative studies have focused more on the number of rDNA site variations within the Chrysanthemum genus, and studies on the types ...
Chen, Fadi   +23 more
core   +1 more source

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