Search results for "External transcribed spacer"

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New Insights into the Systematics of the Schoenoxiphium Clade (Carex, Cyperaceae)

2017

The Spanish Ministry of Science and Technology supported this research through the project CGL2012-38744 and CGL2016- 77401-P to M. Luceño (Principal Investigator), E. Maguilla, M. Escudero, S. Martín-Bravo, and T. Villaverde and an FPU fellowship (AP2012-2189) from the Spanish Government (Ministry of Education, Culture, and Sport) and a Synthesys grant (GB-TAF-2523) by the European Community Research Infrastructure Program to E.Maguilla.

0106 biological sciencesSystematicsSpecies complexCarexPlant ScienceBiologybiology.organism_classification010603 evolutionary biology01 natural sciencesExternal transcribed spacerMonophylySpecies complexPhylogeneticsBotanyInternal transcribed spacerITSCladeEcology Evolution Behavior and SystematicsPhylogeny010606 plant biology & botanyETSTaxonomy
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Sequence analysis of the rDNA spacer of Paracentrotus lividus and observations about pre-rRNA processing. NTS sequence of Paracentrotus lividus rDNA.

1993

We have isolated and sequenced one intergenic region and a small part of the flanking regions (18S and 26S rRNA coding regions) of the rRNA-encoding genes (rDNA) from the sea urchin Paracentrotus lividus. This region is about 3.8 Kb long. Northern blot hybridizations and S1 mapping experiments demonstrated the presence of a partially processed 21S rRNA precursor while has the same 5' terminus as the 32S primary precursor, also in developmental stages characterized by a low rate of rRNA synthesis.

Sequence analysisMolecular Sequence DataRestriction MappingDNA RibosomalParacentrotus lividusIntergenic regionSpecies SpecificitySequence Homology Nucleic AcidGeneticsRNA PrecursorsAnimalsRNA Processing Post-TranscriptionalRRNA processingMolecular BiologyRibosomal DNAbiologyBase SequenceGeneral MedicineSpacer DNARibosomal RNAbiology.organism_classificationMolecular biologyExternal transcribed spacerSea UrchinsOocytesFemaleMolecular biology reports
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What is the origin of the Scottish populations of the European endemic Cherleria sedoides (Caryophyllaceae)?

2015

Cherleria sedoides L. (Minuartia sedoides (L.) Hiern) is a montane perennial which, with some species in Minuartia sect. Spectabiles, is more closely related to Scleranthus than to other Minuartia species and is therefore best restored to the reinstated and redefined genus Cherleria. Reconstruction of the ancestral area of the clade containing C. sedoides suggests that it evolved in the Alps or the Balkan peninsula. The species now has an unusual distribution, being present in the mountains of southern Europe and Scotland but absent from the Arctic. Three historical scenarios that might have led to the presence of the species in Scotland are outlined and tested by a molecular analysis compa…

biologyEcologyScleranthusBotanyLast Glacial MaximumMetapopulationPlant Sciencebiology.organism_classificationExternal transcribed spacerGeographyGenusMinuartiaBotanyBiological dispersalInternal transcribed spacerEcology Evolution Behavior and Systematics
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