@ARTICLE{TreeBASE2Ref14688,
author = {Michael James Bayly and Pauline Y. Ladiges},
title = {Divergent paralogues of ribosomal DNA in eucalypts (Myrtaceae)},
year = {2007},
keywords = {},
doi = {},
url = {},
pmid = {},
journal = {Molecular Phylogenetics and Evolution},
volume = {},
number = {},
pages = {},
abstract = {The presence of divergent paralogues of nuclear ribosomal DNA, from the 18S5.8S26S cistron, is reported in members of Eucalyptus subg. Eucalyptus. These paralogues, which include non-functional pseudogenes, probably diverged prior to the differentiation of species groups in subg. Eucalyptus. When compared with presumably functional sequences, the pseudogenes show greater sequence variation between species, particularly in the 5.8S gene. They are also characterised by reduced GC content, associated with a reduced number of CpG and CpNpG methylation sites, and an increase in the inferred number of methylation-induced substitutions. Some pseudogenes also lack motifs that are usually conserved in plants, both in ITS1 and the 5.8S gene. Two main lineages of pseudogenes are identified, one isolated from a group of western Australian species, one from a group of eastern Australian species. It is not clear whether these two lineages of pseudogenes are orthologous, or represent independent divergences from functional sequence types. The presence of divergent rDNA paralogues highlights the need for caution when interpreting eucalypt phylogenies based on ITS sequences.}
}
Citation for Study 1705
Citation title:
"Divergent paralogues of ribosomal DNA in eucalypts (Myrtaceae)".
This study was previously identified under the legacy study ID S1668
(Status: Published).
Citation
Bayly M.J., & Ladiges P. 2007. Divergent paralogues of ribosomal DNA in eucalypts (Myrtaceae). Molecular Phylogenetics and Evolution, null.
Authors
-
Bayly M.J.
+613 8344 5055
-
Ladiges P.
Abstract
The presence of divergent paralogues of nuclear ribosomal DNA, from the 18S5.8S26S cistron, is reported in members of Eucalyptus subg. Eucalyptus. These paralogues, which include non-functional pseudogenes, probably diverged prior to the differentiation of species groups in subg. Eucalyptus. When compared with presumably functional sequences, the pseudogenes show greater sequence variation between species, particularly in the 5.8S gene. They are also characterised by reduced GC content, associated with a reduced number of CpG and CpNpG methylation sites, and an increase in the inferred number of methylation-induced substitutions. Some pseudogenes also lack motifs that are usually conserved in plants, both in ITS1 and the 5.8S gene. Two main lineages of pseudogenes are identified, one isolated from a group of western Australian species, one from a group of eastern Australian species. It is not clear whether these two lineages of pseudogenes are orthologous, or represent independent divergences from functional sequence types. The presence of divergent rDNA paralogues highlights the need for caution when interpreting eucalypt phylogenies based on ITS sequences.
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S1705
- Other versions:
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- Show BibTeX reference
@ARTICLE{TreeBASE2Ref14688,
author = {Michael James Bayly and Pauline Y. Ladiges},
title = {Divergent paralogues of ribosomal DNA in eucalypts (Myrtaceae)},
year = {2007},
keywords = {},
doi = {},
url = {},
pmid = {},
journal = {Molecular Phylogenetics and Evolution},
volume = {},
number = {},
pages = {},
abstract = {The presence of divergent paralogues of nuclear ribosomal DNA, from the 18S5.8S26S cistron, is reported in members of Eucalyptus subg. Eucalyptus. These paralogues, which include non-functional pseudogenes, probably diverged prior to the differentiation of species groups in subg. Eucalyptus. When compared with presumably functional sequences, the pseudogenes show greater sequence variation between species, particularly in the 5.8S gene. They are also characterised by reduced GC content, associated with a reduced number of CpG and CpNpG methylation sites, and an increase in the inferred number of methylation-induced substitutions. Some pseudogenes also lack motifs that are usually conserved in plants, both in ITS1 and the 5.8S gene. Two main lineages of pseudogenes are identified, one isolated from a group of western Australian species, one from a group of eastern Australian species. It is not clear whether these two lineages of pseudogenes are orthologous, or represent independent divergences from functional sequence types. The presence of divergent rDNA paralogues highlights the need for caution when interpreting eucalypt phylogenies based on ITS sequences.}
}
- Show RIS reference
TY - JOUR
ID - 14688
AU - Bayly,Michael James
AU - Ladiges,Pauline Y.
T1 - Divergent paralogues of ribosomal DNA in eucalypts (Myrtaceae)
PY - 2007
KW -
UR -
N2 - The presence of divergent paralogues of nuclear ribosomal DNA, from the 18S5.8S26S cistron, is reported in members of Eucalyptus subg. Eucalyptus. These paralogues, which include non-functional pseudogenes, probably diverged prior to the differentiation of species groups in subg. Eucalyptus. When compared with presumably functional sequences, the pseudogenes show greater sequence variation between species, particularly in the 5.8S gene. They are also characterised by reduced GC content, associated with a reduced number of CpG and CpNpG methylation sites, and an increase in the inferred number of methylation-induced substitutions. Some pseudogenes also lack motifs that are usually conserved in plants, both in ITS1 and the 5.8S gene. Two main lineages of pseudogenes are identified, one isolated from a group of western Australian species, one from a group of eastern Australian species. It is not clear whether these two lineages of pseudogenes are orthologous, or represent independent divergences from functional sequence types. The presence of divergent rDNA paralogues highlights the need for caution when interpreting eucalypt phylogenies based on ITS sequences.
L3 -
JF - Molecular Phylogenetics and Evolution
VL -
IS -
ER -
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