Evidence map›Paper›PMID 18779974›Full record

ArticleChromosoma2009

Linkage of 35S and 5S rRNA genes in Artemisia (family Asteraceae): first evidence from angiosperms.

Sònia Garcia, K Yoong Lim, Michael Chester, Teresa Garnatje, Jaume Pellicer, Joan Vallès, Andrew R Leitch, Ales Kovarík

Abstract read
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In one paragraph

Article in Chromosoma, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
6.5field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 78 citations in OpenAlex.

  1. Genome architecture modulates 35S and 5S rDNA homogenization in Asteraceae.The Plant journal : for cell and molecular biology · 2026
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  3. Divergence of 10 satellite repeats in Artemisia (Asteraceae: Anthemideae) based on sequential fluorescence in situ hybridization analysis: evidence for species identification and evolution.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2024
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  14. Comparative Dissection of Three Giant Genomes:International journal of molecular sciences · 2019
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 4 countries.

Sònia GarciaLaboratori de Botànica, Facultat de Farmàcia, Universitat de Barcelona, Catalonia, Spain.
K Yoong Lim
Michael Chester
Teresa Garnatje
Jaume Pellicer
Joan Vallès
Andrew R Leitch
Ales Kovarík
Queen Mary University of London · GBInstitut Botànic de Barcelona · ESUniversitat de Barcelona · ESCzech Academy of Sciences · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Typically in plants, the 5S and 35S ribosomal DNA (rDNA) encoding two major ribosomal RNA species occur at separate loci. However, in some algae, bryophytes and ferns, they are at the same locus (linked arranged). Southern blot hybridisation, polymerase chain reactions (PCR), fluorescent in situ hybridisation, cloning and sequencing were used to reveal 5S and 35S rDNA genomic organisation in Artemisia. We observed thousands of rDNA units at two-three loci containing 5S rDNA in an inverted orientation within the inter-genic spacer (IGS) of 35S rDNA. The sequenced clones of 26-18S IGS from Artemisia absinthium appeared to contain a conserved 5S gene insertion proximal to the 26S gene terminus (5S rDNA-1) and a second less conserved 5S insertion (5S rDNA-2) further downstream. Whilst the 5S rDNA-1 showed all the structural features of a functional gene, the 5S-rDNA-2 had a deletion in the internal promoter and probably represents a pseudogene. The linked arrangement probably evolved before the divergence of Artemisia from the rest of Asteraceae (>10 Myrs). This arrangement may have involved retrotransposons and once formed spread via mechanisms of concerted evolution. Heterogeneity in unit structure may reflect ongoing homogenisation of variant unit types without fixation for any particular variant.

Indexed as

Genetic LinkageArtemisiaBase SequenceDNA, IntergenicDNA, PlantDNA, RibosomalGenome, PlantIn Situ Hybridization, FluorescenceMagnoliopsidaMolecular Sequence DataPolymerase Chain ReactionRNA, RibosomalRNA, Ribosomal, 5SSequence AlignmentDNA, IntergenicDNA, PlantDNA, RibosomalRNA, RibosomalRNA, Ribosomal, 5S

Identifiers

PMID18779974
OpenAlexW2057825126

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.