@ARTICLE{TreeBASE2Ref18172,
author = {Martin F. Wojciechowski and Michael J. Sanderson and Bruce G. Baldwin and Michael J Donoghue},
title = {Monophyly of aneuploid Astragalus (Fabaceae): Evidence from nuclear ribosomal DNA internal transcribed spacer sequences.},
year = {1993},
keywords = {},
doi = {},
url = {},
pmid = {},
journal = {American Journal of Botany},
volume = {80},
number = {},
pages = {711--722},
abstract = {Evolutionary relationships within Astragalus L. (Fabaceae) were inferred from nucleotide sequence variation in nuclear ribosomal DNA of both New World and Old World species. The internal transcribed spacer regions (ITS) of 18S-26S nuclear ribosomal DNA from representatives of 26 species of Astragalus, three species of Oxytropis DC., and two outgroup taxa were analyzed by polymerase chain reaction amplification and direct DNA sequencing. The length of the ITS I region within these taxa varied from 221 to 231 bp, while ITS 2 varied in length from 207 to 217 bp. Of the aligned, unambiguous positions, approximately 34% were variable in each spacer region. In pairwise comparisons among Astragalus species and outgroup taxa, sequence divergence at these sites ranged from 0 to 1 8.8% in ITS I and from 0 to 21.7% in ITS 2. Parsimony analyses of these sequences resulted in a well-resolved phylogeny that is highly concordant with previous cytogenetic and chloroplast DNA evidence for a major phylogenetic division in the genus. These data suggest that the New World aneuploid species of Astragalus form a monophyletic but morphologically cryptic group derived from euploid species of Old World (Eurasian) origin, which are consequently paraphyletic.}
}
Citation for Study 236
Citation title:
"Monophyly of aneuploid Astragalus (Fabaceae): Evidence from nuclear ribosomal DNA internal transcribed spacer sequences.".
This study was previously identified under the legacy study ID S2x6x96c17c48c00
(Status: Published).
Citation
Wojciechowski M., Sanderson M., Baldwin B.G., & Donoghue M.J. 1993. Monophyly of aneuploid Astragalus (Fabaceae): Evidence from nuclear ribosomal DNA internal transcribed spacer sequences. American Journal of Botany, 80: 711-722.
Authors
-
Wojciechowski M.
-
Sanderson M.
-
Baldwin B.G.
510-643-7008
-
Donoghue M.J.
Abstract
Evolutionary relationships within Astragalus L. (Fabaceae) were inferred from nucleotide sequence variation in nuclear ribosomal DNA of both New World and Old World species. The internal transcribed spacer regions (ITS) of 18S-26S nuclear ribosomal DNA from representatives of 26 species of Astragalus, three species of Oxytropis DC., and two outgroup taxa were analyzed by polymerase chain reaction amplification and direct DNA sequencing. The length of the ITS I region within these taxa varied from 221 to 231 bp, while ITS 2 varied in length from 207 to 217 bp. Of the aligned, unambiguous positions, approximately 34% were variable in each spacer region. In pairwise comparisons among Astragalus species and outgroup taxa, sequence divergence at these sites ranged from 0 to 1 8.8% in ITS I and from 0 to 21.7% in ITS 2. Parsimony analyses of these sequences resulted in a well-resolved phylogeny that is highly concordant with previous cytogenetic and chloroplast DNA evidence for a major phylogenetic division in the genus. These data suggest that the New World aneuploid species of Astragalus form a monophyletic but morphologically cryptic group derived from euploid species of Old World (Eurasian) origin, which are consequently paraphyletic.
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S236
- Other versions:
Nexus
NeXML
- Show BibTeX reference
@ARTICLE{TreeBASE2Ref18172,
author = {Martin F. Wojciechowski and Michael J. Sanderson and Bruce G. Baldwin and Michael J Donoghue},
title = {Monophyly of aneuploid Astragalus (Fabaceae): Evidence from nuclear ribosomal DNA internal transcribed spacer sequences.},
year = {1993},
keywords = {},
doi = {},
url = {},
pmid = {},
journal = {American Journal of Botany},
volume = {80},
number = {},
pages = {711--722},
abstract = {Evolutionary relationships within Astragalus L. (Fabaceae) were inferred from nucleotide sequence variation in nuclear ribosomal DNA of both New World and Old World species. The internal transcribed spacer regions (ITS) of 18S-26S nuclear ribosomal DNA from representatives of 26 species of Astragalus, three species of Oxytropis DC., and two outgroup taxa were analyzed by polymerase chain reaction amplification and direct DNA sequencing. The length of the ITS I region within these taxa varied from 221 to 231 bp, while ITS 2 varied in length from 207 to 217 bp. Of the aligned, unambiguous positions, approximately 34% were variable in each spacer region. In pairwise comparisons among Astragalus species and outgroup taxa, sequence divergence at these sites ranged from 0 to 1 8.8% in ITS I and from 0 to 21.7% in ITS 2. Parsimony analyses of these sequences resulted in a well-resolved phylogeny that is highly concordant with previous cytogenetic and chloroplast DNA evidence for a major phylogenetic division in the genus. These data suggest that the New World aneuploid species of Astragalus form a monophyletic but morphologically cryptic group derived from euploid species of Old World (Eurasian) origin, which are consequently paraphyletic.}
}
- Show RIS reference
TY - JOUR
ID - 18172
AU - Wojciechowski,Martin F.
AU - Sanderson,Michael J.
AU - Baldwin,Bruce G.
AU - Donoghue,Michael J
T1 - Monophyly of aneuploid Astragalus (Fabaceae): Evidence from nuclear ribosomal DNA internal transcribed spacer sequences.
PY - 1993
UR -
N2 - Evolutionary relationships within Astragalus L. (Fabaceae) were inferred from nucleotide sequence variation in nuclear ribosomal DNA of both New World and Old World species. The internal transcribed spacer regions (ITS) of 18S-26S nuclear ribosomal DNA from representatives of 26 species of Astragalus, three species of Oxytropis DC., and two outgroup taxa were analyzed by polymerase chain reaction amplification and direct DNA sequencing. The length of the ITS I region within these taxa varied from 221 to 231 bp, while ITS 2 varied in length from 207 to 217 bp. Of the aligned, unambiguous positions, approximately 34% were variable in each spacer region. In pairwise comparisons among Astragalus species and outgroup taxa, sequence divergence at these sites ranged from 0 to 1 8.8% in ITS I and from 0 to 21.7% in ITS 2. Parsimony analyses of these sequences resulted in a well-resolved phylogeny that is highly concordant with previous cytogenetic and chloroplast DNA evidence for a major phylogenetic division in the genus. These data suggest that the New World aneuploid species of Astragalus form a monophyletic but morphologically cryptic group derived from euploid species of Old World (Eurasian) origin, which are consequently paraphyletic.
L3 -
JF - American Journal of Botany
VL - 80
IS -
SP - 711
EP - 722
ER -