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Cited by 506

The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.

The Evolution of Ribosomal DNA Divergent Paralogues and Phylogenetic Implications

Open access
Buckler, Edward S, Ippolito, Anthony, Holtsford, Timothy P·1997·Genetics

Abstract

Although nuclear ribosomal DNA (rDNA) repeats evolve together through concerted evolution, some genomes contain a considerable diversity of paralogous rDNA. This diversity includes not only multiple functional loci but also putative pseudogenes and recombinants. We examined the occurrence of divergent paralogues and recombinants in Gossypium, Nicotiana, Tripsacum, Winteraceae, and Zea ribosomal internal transcribed spacer (ITS) sequences. Some of the divergent paralogues are probably rDNA pseudogenes, since they have low predicted secondary structure stability, high substitution rates, and many deamination-driven substitutions at methylation sites. Under standard PCR conditions, the low stability paralogues amplified well, while many high-stability paralogues amplified poorly. Under highly denaturing PCR conditions (i.e., with dimethylsulfoxide), both low- and high-stability paralogues amplified well. We also found recombination between divergent paralogues. For phylogenetics, divergent ribosomal paralogues can aid in reconstructing ancestral states and thus serveas good outgroups. Divergent paralogues can also provide companion rDNA phylogenies. However, phylogeneticists must discriminate among families of divergent paralogues and recombinants or suffer from muddled and inaccurate organismal phylogenies.

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Metadata

Authors
Buckler, E. S., Ippolito, A., & Holtsford, T. P.
Venue
Genetics
Published
1997-03-01
Volume
145
Issue
3
Pages
821-832
ISSN
  • 0016-6731 (ISSN-L)
  • 1943-2631
OpenAlex
W1880671068
Cited by
506
References
26
FWCI
27.35
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: The Evolution of Ribosomal DNA Divergent Paralogues and Phylogenetic Implications. https://app.cochat.ai/papers/10.1093/genetics/145.3.821
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Buckler, E. S., Ippolito, A., & Holtsford, T. P. (1997). The Evolution of Ribosomal DNA Divergent Paralogues and Phylogenetic Implications. Genetics. https://doi.org/10.1093/genetics/145.3.821

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