Results 21 to 30 of about 126,234 (299)

Cytogenetic variability among Bradyporinae species (Orthoptera: Tettigoniidae)

open access: yesEuropean 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
doaj   +1 more source

Ciliate Environmental Diversity Can Be Underestimated by the V4 Region of SSU rDNA: Insights from Species Delimitation and Multilocus Phylogeny of Pseudokeronopsis (Protist, Ciliophora)

open access: yesMicroorganisms, 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
doaj   +1 more source

An intranucleolar body associated with rDNA [PDF]

open access: yesChromosoma, 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
openaire   +3 more sources

Morphology and rDNA phylogeny of a Mediterranean Coolia monotis (Dinophyceae) strain from Greece

open access: yesScientia 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
doaj   +1 more source

Molecular diagnosis of red rot of sugarcane in Pakistan and in vitro control of isolated pathogen using rhizobacteria

open access: yesPlant 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
doaj   +1 more source

Genomic organization of rat rDNA [PDF]

open access: yesNucleic 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
openaire   +2 more sources

Chromosomal location of rDNA clusters and TTAGG telomeric repeats in eight species of the spittlebug genus Philaenus (Hemiptera: Auchenorrhyncha: Aphrophoridae)

open access: yesEuropean 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
doaj   +1 more source

Molecular characterization and phylogeny of the entomopathogenic fungus

open access: yesPlant 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]

open access: yesGenes & 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

Variability of seed-borne Colletotrichum strains in cotton based on ITS1 and ITS2 ribossomal genes analysis

open access: yesBioscience 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

Home - About - Disclaimer - Privacy