Results 71 to 80 of about 1,960,648 (201)

A New Isolate of the Genus Malassezia Based on the Sequence Analysis of 26S and ITS1 in Ribosomal DNA [PDF]

open access: yesCell Journal, 2009
Malassezia species considered to be the etiological agents of pityriasis versicolor andMalassezia follicolitis in humans. Recently, on the basis of molecular data, four new specieswere added to the genus.
Hossein Mirhendi   +2 more
doaj  

Next generation sequencing analysis reveals a relationship between rDNA unit diversity and locus number in Nicotiana diploids [PDF]

open access: yes, 2012
Background Tandemly arranged nuclear ribosomal DNA (rDNA), encoding 18S, 5.8S and 26S ribosomal RNA (rRNA), exhibit concerted evolution, a pattern thought to result from the homogenisation of rDNA arrays. However rDNA homogeneity at the single nucleotide
Fulnecek, Jaroslav   +31 more
core   +1 more source

Phylogenetic analysis of Polystigma and its relationship to Phyllachorales

open access: yesPhytopathologia Mediterranea, 2015
Polystigma amygdalinum, which causes red leaf blotch of almond, is one of the few fungal plant pathogens to remain a taxonomic enigma, primarily because it has resisted cultivation and causes almond leaf blotch only in restricted regions of the world. To
Azadeh HABIBI   +2 more
doaj   +1 more source

Studies on ribosomal DNA in cetaceans (whales) [PDF]

open access: yesHereditas, 2008
ARNASON U. and WIDEGREN, B. 1984. Studies on ribosomal DNA in cetaceans (whales).—Hereditas 101:149–154. Lund, Sweden. ISSN 0018–0661. Ribosomal DNA (rDNA) of 4 mysticetes and 10 odontocetes were studied by Southern blot hybridization. The material represented all extant cetacean families except the gray whales.
U, Arnason, B, Widegren
openaire   +2 more sources

Unveiling cryptic species diversity of flowering plants: successful biological species identification of Asian Mitella using nuclear ribosomal DNA sequences

open access: yesBMC Evolutionary Biology, 2009
Background Although DNA sequence analysis is becoming a powerful tool for identifying species, it is not easy to assess whether the observed genetic disparity corresponds to reproductive isolation.
Okuyama Yudai, Kato Makoto
doaj   +1 more source

The Epigenetic Pathways to Ribosomal DNA Silencing [PDF]

open access: yesMicrobiology and Molecular Biology Reviews, 2016
SUMMARY Heterochromatin is the transcriptionally repressed portion of eukaryotic chromatin that maintains a condensed appearance throughout the cell cycle. At sites of ribosomal DNA (rDNA) heterochromatin, epigenetic states contribute to gene silencing and genome stability, which are required for proper chromosome
Rakesh, Srivastava   +2 more
openaire   +2 more sources

Molecular and ultrastructure characterization of two nematodes (Thelandros scleratus and Physalopteroides dactyluris) based on ribosomal and mitochondrial DNA sequences

open access: yesHelminthologia, 2016
The phylogenetic relationships of the nematode species Thelandros scleratus (Oxyurida: Pharyn-godonidae) and Physalopteroides dactyluris (Spirurida: Physalopteridae) were analyzed using the ribosomal 18S rRNAand the mitochondrial cytochrome C oxidase ...
Goswami U   +3 more
doaj   +1 more source

40S ribosome biogenesis co-factors are essential for gametophyte and embryo development [PDF]

open access: yes, 2013
Ribosome biogenesis is well described in Saccharomyces cerevisiae. In contrast only very little information is available on this pathway in plants. This study presents the characterization of five putative protein co-factors of ribosome biogenesis in ...
Roman Martin   +28 more
core   +2 more sources

RIBOSOMAL DNA IN A NUCLEAR SATELLITE OF TOMATO [PDF]

open access: yesGenetics, 1975
ABSTRACT A satellite DNA of buoyant density 1.704 constitutes approximately 5%–6% of nuclear DNA isolated from cherry tomato leaves. Isolated satellite DNA exhibits a multi-component melting profile. Kinetic complexity measurements indicate that 37% of the satellite consists of repeating units of 105 daltons, and 48% of it consists of ...
openaire   +2 more sources

ABH2 Couples Regulation of Ribosomal DNA Transcription with DNA Alkylation Repair

open access: yesCell Reports, 2013
Transcription has been linked to DNA damage. How the most highly transcribed mammalian ribosomal (rDNA) genes maintain genome integrity in the absence of transcription-coupled DNA damage repair is poorly understood.
Pishun Li   +7 more
doaj   +1 more source

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