Results 21 to 30 of about 86,065 (262)
Molecular characterization and phylogeny of the entomopathogenic fungus
Plant Protection Science, 1999 We characterized 23 isolates of the entomopathogenic fungus Aschersonia spp. from Mexico, Brazil, Guyana, Trinidad, Venezuela, Columbia, Florida, Malaysia, Thailand, Japan, Philippines, Java and South India using RAPD markers.
Miroslav Oborník +3 more
doaj +1 more source
Allelic inactivation of rDNA loci [PDF]
Genes & Development, 2009 Human cells contain several hundred ribosomal genes (rDNA) that are clustered into nucleolar organizer regions (NORs) on the short arms of five different acrocentric chromosomes. Only ∼50% of the gene copies are actually expressed in somatic cells. Here, we used a new cytological technique to demonstrate that rDNA is regulated allelically in a regional
Sharon, Schlesinger +3 more
openaire +2 more sources
Bioscience Journal, 2015 The use of DNA sequences analysis has been an important mean to distinguish and to identify populations of organisms at different levels. By molecular markers several complex organisms have been successful detected in plants for distinct aims.
Enia Mara de Carvalho +4 more
doaj +1 more source
The role of acetylation in rDNA transcription [PDF]
Nucleic Acids Research, 2001 Treatment of NIH 3T3 cells with trichostatin A (TSA), an inhibitor of histone deacetylase (HDAC), resulted in a dose-dependent increase in transcription from a rDNA reporter and from endogenous rRNA genes. Chromatin immunoprecipitation using anti-acetyl-histone H4 antibodies demonstrated a direct effect of TSA on the acetylation state of the ribosomal ...
I, Hirschler-Laszkiewicz +5 more
openaire +2 more sources
European Journal of Entomology, 2011 The present study focused on the evolution of the karyotype in 21 taxa of the genus Isophya, which was done by mapping the location on the chromosomes of ribosomal RNA (rRNA) coding genes using fluorescence in situ hybridization (FISH) with an 18S rDNA ...
Beata GRZYWACZ +4 more
doaj +1 more source
Molecular variations in Lenzites species collected from Nigeria and other parts of the world using Internal Transcribed Spacers (ITS) regions of Ribosomal RNA [PDF]
Microbial Biosystems Journal, 2018 The phylogeny of six specimens of Lenzites species collected from Akure Nigeria was studied using molecular data obtained by sequencing the internal transcribed spacers (ITS) regions of ribosomal RNA using universal primers (ITS4 and ITS5).
doaj +1 more source
Copy Number Variations of Human Ribosomal Genes in Health and Disease: Role and Causes
Frontiers in Bioscience-LandmarkBackground: A number of association studies have linked ribosomal DNA gene copy number (rDNA CN) to aging and pathology. Data from these studies are contradictory and depend on the quantitative method.
Natalia N. Veiko +10 more
doaj +1 more source
Journal of Nematology, 2023 Meloidogyne paramali n. sp. was detected from Japanese maple trees (Acer palmatum) from Chiba, Japan during quarantine inspections in China. This species is characterized by second-stage juveniles (J2) with short tail length 32.2 (24–36.8) μm, finely ...
Gu Jianfeng +4 more
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Helminthologia, 2017 The specimens collected from American mink (Neovison vison) and European polecat (Mustela putorius) in Lithuania were morphologically identified as Isthmiophora melis (Schrank, 1788) Lühe, 1909 and were molecularly characterized through sequencing of ...
Nugaraitė D. +2 more
doaj +1 more source
Transcription and methylation of flax rDNA
Nucleic Acids Research, 1983 The transcription of flax rDNA and the processing of the rRNA precursors is described. The location of methylated regions of the rDNA has been assayed, one of the least methylated regions maps close to the 5' end of the largest identified rRNA precursor.
T H, Ellis +2 more
openaire +3 more sources