@ARTICLE{TreeBASE2Ref15902,
author = {Maril? Liliana Huertas and Julio Valentin Schneider and Georg Zizka},
title = {Phylogenetic analysis of Palaua (Malveae, Malvaceae) based on plastid and nuclear sequences},
year = {2007},
keywords = {Atacama desert, carpel disposition, ITS, lomas, psbA-trnH},
doi = {10.1600/036364407780360157},
url = {},
pmid = {},
journal = {Systematic Botany},
volume = {32},
number = {1},
pages = {157--165},
abstract = {Palaua is a genus of 15 species endemic to the fog-influenced lomas formations amidst the coastal deserts of Peru and Chile, characterized by the unique irregularly arranged, superimposed carpels. The only exception is P. sandemanii, which has the carpels arranged in a single whorl, the state observed in the potential sister groups. To investigate the monophyly of Palaua and to compare previous infrageneric classifications in a phylogenetic framework, Maximum parsimony and Bayesian analyses were performed using plastid (psbA-trnH intergenic spacer) and nuclear (internal transcribed spacer 1 and 2) DNA sequences. There is evidence for three clades within a monophyletic Palaua: one comprising the two small-flowered species P. inconspicua and P. modesta as sister to the rest of the genus, a second that unites all species with dissected leaves, and a third that comprises the rest of the genus (species with entire to shallowly lobed leaves; except P. guentheri). In contrast to our expectations, P. sandemanii could not be confirmed as sister to the rest of the genus, but rather is nested within a monophyletic Palaua. Parsimony-based reconstruction of the evolution of carpel arrangement showed that there was a change in Palaua from superimposed, irregularly arranged carpels to uniseriate carpels in P. sandemanii; however, Templeton and Shimodaira-Hasegawa tests did not reject the alternative hypothesis that the uniseriate carpels are ancestral. Besides carpel arrangement, leaf division (and not growth form) seems to be an appropriate character for an infrageneric classification.}
}
Citation for Study 1642
Citation title:
"Phylogenetic analysis of Palaua (Malveae, Malvaceae) based on plastid and nuclear sequences".
This study was previously identified under the legacy study ID S1592
(Status: Published).
Citation
Huertas M., Schneider J., & Zizka G. 2007. Phylogenetic analysis of Palaua (Malveae, Malvaceae) based on plastid and nuclear sequences. Systematic Botany, 32(1): 157-165.
Authors
-
Huertas M.
-
Schneider J.
-
Zizka G.
Abstract
Palaua is a genus of 15 species endemic to the fog-influenced lomas formations amidst the coastal deserts of Peru and Chile, characterized by the unique irregularly arranged, superimposed carpels. The only exception is P. sandemanii, which has the carpels arranged in a single whorl, the state observed in the potential sister groups. To investigate the monophyly of Palaua and to compare previous infrageneric classifications in a phylogenetic framework, Maximum parsimony and Bayesian analyses were performed using plastid (psbA-trnH intergenic spacer) and nuclear (internal transcribed spacer 1 and 2) DNA sequences. There is evidence for three clades within a monophyletic Palaua: one comprising the two small-flowered species P. inconspicua and P. modesta as sister to the rest of the genus, a second that unites all species with dissected leaves, and a third that comprises the rest of the genus (species with entire to shallowly lobed leaves; except P. guentheri). In contrast to our expectations, P. sandemanii could not be confirmed as sister to the rest of the genus, but rather is nested within a monophyletic Palaua. Parsimony-based reconstruction of the evolution of carpel arrangement showed that there was a change in Palaua from superimposed, irregularly arranged carpels to uniseriate carpels in P. sandemanii; however, Templeton and Shimodaira-Hasegawa tests did not reject the alternative hypothesis that the uniseriate carpels are ancestral. Besides carpel arrangement, leaf division (and not growth form) seems to be an appropriate character for an infrageneric classification.
Keywords
Atacama desert, carpel disposition, ITS, lomas, psbA-trnH
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S1642
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@ARTICLE{TreeBASE2Ref15902,
author = {Maril? Liliana Huertas and Julio Valentin Schneider and Georg Zizka},
title = {Phylogenetic analysis of Palaua (Malveae, Malvaceae) based on plastid and nuclear sequences},
year = {2007},
keywords = {Atacama desert, carpel disposition, ITS, lomas, psbA-trnH},
doi = {10.1600/036364407780360157},
url = {},
pmid = {},
journal = {Systematic Botany},
volume = {32},
number = {1},
pages = {157--165},
abstract = {Palaua is a genus of 15 species endemic to the fog-influenced lomas formations amidst the coastal deserts of Peru and Chile, characterized by the unique irregularly arranged, superimposed carpels. The only exception is P. sandemanii, which has the carpels arranged in a single whorl, the state observed in the potential sister groups. To investigate the monophyly of Palaua and to compare previous infrageneric classifications in a phylogenetic framework, Maximum parsimony and Bayesian analyses were performed using plastid (psbA-trnH intergenic spacer) and nuclear (internal transcribed spacer 1 and 2) DNA sequences. There is evidence for three clades within a monophyletic Palaua: one comprising the two small-flowered species P. inconspicua and P. modesta as sister to the rest of the genus, a second that unites all species with dissected leaves, and a third that comprises the rest of the genus (species with entire to shallowly lobed leaves; except P. guentheri). In contrast to our expectations, P. sandemanii could not be confirmed as sister to the rest of the genus, but rather is nested within a monophyletic Palaua. Parsimony-based reconstruction of the evolution of carpel arrangement showed that there was a change in Palaua from superimposed, irregularly arranged carpels to uniseriate carpels in P. sandemanii; however, Templeton and Shimodaira-Hasegawa tests did not reject the alternative hypothesis that the uniseriate carpels are ancestral. Besides carpel arrangement, leaf division (and not growth form) seems to be an appropriate character for an infrageneric classification.}
}
- Show RIS reference
TY - JOUR
ID - 15902
AU - Huertas,Maril? Liliana
AU - Schneider,Julio Valentin
AU - Zizka,Georg
T1 - Phylogenetic analysis of Palaua (Malveae, Malvaceae) based on plastid and nuclear sequences
PY - 2007
KW - Atacama desert
KW - carpel disposition
KW - ITS
KW - lomas
KW - psbA-trnH
UR -
N2 - Palaua is a genus of 15 species endemic to the fog-influenced lomas formations amidst the coastal deserts of Peru and Chile, characterized by the unique irregularly arranged, superimposed carpels. The only exception is P. sandemanii, which has the carpels arranged in a single whorl, the state observed in the potential sister groups. To investigate the monophyly of Palaua and to compare previous infrageneric classifications in a phylogenetic framework, Maximum parsimony and Bayesian analyses were performed using plastid (psbA-trnH intergenic spacer) and nuclear (internal transcribed spacer 1 and 2) DNA sequences. There is evidence for three clades within a monophyletic Palaua: one comprising the two small-flowered species P. inconspicua and P. modesta as sister to the rest of the genus, a second that unites all species with dissected leaves, and a third that comprises the rest of the genus (species with entire to shallowly lobed leaves; except P. guentheri). In contrast to our expectations, P. sandemanii could not be confirmed as sister to the rest of the genus, but rather is nested within a monophyletic Palaua. Parsimony-based reconstruction of the evolution of carpel arrangement showed that there was a change in Palaua from superimposed, irregularly arranged carpels to uniseriate carpels in P. sandemanii; however, Templeton and Shimodaira-Hasegawa tests did not reject the alternative hypothesis that the uniseriate carpels are ancestral. Besides carpel arrangement, leaf division (and not growth form) seems to be an appropriate character for an infrageneric classification.
L3 - 10.1600/036364407780360157
JF - Systematic Botany
VL - 32
IS - 1
SP - 157
EP - 165
ER -