Results 11 to 20 of about 86,065 (262)
Calorie restriction reduces rDNA recombination independently of rDNA silencing [PDF]
Aging Cell, 2009 SummaryCalorie restriction (CR) extends lifespan in yeast, worms, flies and mammals, suggesting that it acts via a conserved mechanism. In yeast, activation of the NAD‐dependent histone deacetylase, Sir2, by CR is thought to increase silencing at the ribosomal DNA, thereby reducing the recombination‐induced generation of extrachromosomal rDNA circles ...
Riesen, Michèle, Morgan, Alan
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Quelling targets the rDNA locus and functions in rDNA copy number control [PDF]
BMC Microbiology, 2009 RNA silencing occurs in a broad range of organisms. Although its ancestral function is probably related to the genome defense mechanism against repetitive selfish elements, it has been found that RNA silencing regulates different cellular processes such as gene expression and chromosomal segregation.
Germano Cecere, COGONI, Carlo
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Complete deletion of yeast chromosomal rDNA repeats and integration of a new rDNA repeat: use of rDNA deletion strains for functional analysis of rDNA promoter elements in vivo [PDF]
Nucleic Acids Research, 2000 Strains of Saccharomyces cerevisiae were constructed in which chromosomal rDNA repeats are completely deleted and their growth is supported by a plasmid carrying a single rDNA repeat, either a plasmid carrying the 35S rRNA gene transcribed from the native promoter by RNA polymerase I or a plasmid carrying the 35S rRNA gene fused to the GAL7 promoter ...
Wai, Hobert H. +3 more
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Cytogenetic variability among Bradyporinae species (Orthoptera: Tettigoniidae)
European Journal of Entomology, 2013 Chromosomes of six European species (one with two subspecies) of Orthoptera belonging to the tribes Ephippigerini and Bradyporini were analyzed using C-banding, Ag-NOR, DAPI (AT-rich)/CMA3 (GC-rich) staining and fluorescence in situ hybridization (FISH ...
Elżbieta WARCHAŁOWSKA-ŚLIWA +5 more
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Microorganisms, 2019 Metabarcoding and high-throughput sequencing methods have greatly improved our understanding of protist diversity. Although the V4 region of small subunit ribosomal DNA (SSU-V4 rDNA) is the most widely used marker in DNA metabarcoding of eukaryotic ...
Zifeng Zhan, Ju Li, Kuidong Xu
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An intranucleolar body associated with rDNA [PDF]
Chromosoma, 2011 The nucleolus is the subnuclear organelle responsible for ribosome subunit biogenesis and can also act as a stress sensor. It forms around clusters of ribosomal DNA (rDNA) and is mainly organised in three subcompartments, i.e. fibrillar centre, dense fibrillar component and granular component. Here, we describe the localisation of 21 protein factors to
Hutten, Saskia +6 more
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Morphology and rDNA phylogeny of a Mediterranean Coolia monotis (Dinophyceae) strain from Greece
Scientia Marina, 2006 Sequences of LSU and SSU ribosomal RNA genes and phylogeny have not been widely investigated for the dinoflagellate Coolia monotis Meunier, and no information is available on the small and large rDNA subunits of Mediterranean strains.
Nicolas P. Dolapsakis +3 more
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Plant Protection Science, 2023 Sugarcane (Saccharum officinarum L.) is a key cash crop, and its production is influenced by a variety of phytopathogens in different parts of the world.
Zimen Ahmad +14 more
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Genomic organization of rat rDNA [PDF]
Nucleic Acids Research, 1983 A detailed restriction map was determined for a 10.9 KB region that contains the initiation site for 45S pre-rRNA and the first 1.7 KB of the 18S rRNA coding region. When the restriction pattern of the cloned rDNA was compared with that of total rat DNA, the rDNA regions of both Sprague-Dawley and BD-9 rats were identical to each other and to that of ...
D M, Chikaraishi +3 more
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European Journal of Entomology, 2013 A cytogenetic investigation was performed in eight species of the spittlebug genus Philaenus using silver-NOR (AgNOR)-banding and fluorescence in situ hybridization (FISH) with 18S rDNA and (TTAGG)n telomeric probes. This is the first application of FISH
Anna MARYAŃSKA-NADACHOWSKA +2 more
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