@ARTICLE{TreeBASE2Ref21764,
author = {Dengmei Fan and Jipei Yue and Ze-Long Nie and Zhimin Li and Hans Peter Comes and Hang Sun},
title = {Phylogeography of Sophora davidii (Leguminosae) across the "Tanaka-Kaiyong Line", an important phytogeographic boundary in Southwest China},
year = {2013},
keywords = {chloroplast DNA, China, nuclear DNA, phylogeography, Sophora davidii, Tanaka-Kaiyong Line},
doi = {},
url = {http://},
pmid = {},
journal = {Molecular Ecology},
volume = {},
number = {},
pages = {},
abstract = {The "Tanaka-Kaiyong Line" (TKL) is a major phytogeographic boundary in Southwest China, separating East Asia?s Sino-Himalayan and Sino-Japanese Floras. However, little is known about the importance of this boundary in promoting intra-specific phylogeographic subdivision and divergence. Using chloroplast (cpDNA) and nuclear-intron (nDNA) sequence data, we reconstructed the population history of Sophora davidii, a drought-tolerant riparian shrub widely distributed on either side of the TKL. Specifically, we aimed at testing two long-standing explanations for possible vicariant events across the TKL: (1) Late Pliocene (c. 3 Ma) geological uplift of the eastern Qinghai-Tibetan Plateau; or (2) a sharp environmental gradient associated with the establishment of different monsoon regimes on either side of the TKL during the (Late) Pleistocene. Our genealogical analyses detected a major west-east split in cpDNA, geographically largely consistent with the TKL, and dated to the Pleistocene [c. 1.28 Ma (95% HPD: 0.21?2.96 Ma)]. Furthermore, integrating cpDNA phylogeographic patterns with mismatch analyses, we found multiple refugial isolation and long-term demographic stability of populations in the west (Hengduan Mountain Range) compared to extensive range expansions in the east, possibly during the last glacial period(s), and followed by differentiation into regional sub-lineages (southeast: Yunnan-Guizhou Plateau vs. northeast: Qinling Mts./Loess Plateau). Although nuclear differentiation was less marked, the geographical pattern of nDNA haplotypes provided some further indication of the species? eastward expansion, possibly from source populations located just east of the TKL (Lower Jinshajiang region). Overall, the present data reject the geological (tectonic) explanation for the TKL and, instead, provide supportive evidence for its role as a climatically driven barrier to present-day plant dispersal. In addition, our study highlights changing temperatures and vegetation types during the last glacial period(s), along with aspects of regional topography, to be important determinants of the glacial eastward expansion of S. davidii. In consequence, our study lends support to a ?glacial out-of-Hengduan Mts.? hypothesis for the xerophytic-riparian flora of Southwest China, which in turn is inconsistent with the traditional view of the TKL as a ?classical? vicariant-biogeographic boundary.}
}
Citation for Study 13583
Citation title:
"Phylogeography of Sophora davidii (Leguminosae) across the "Tanaka-Kaiyong Line", an important phytogeographic boundary in Southwest China".
Study name:
"Phylogeography of Sophora davidii (Leguminosae) across the "Tanaka-Kaiyong Line", an important phytogeographic boundary in Southwest China".
This study is part of submission 13583
(Status: Published).
Citation
Fan D., Yue J., Nie Z., Li Z., Comes H., & Sun H. 2013. Phylogeography of Sophora davidii (Leguminosae) across the "Tanaka-Kaiyong Line", an important phytogeographic boundary in Southwest China. Molecular Ecology, .
Authors
-
Fan D.
-
Yue J.
-
Nie Z.
-
Li Z.
-
Comes H.
-
Sun H.
Abstract
The "Tanaka-Kaiyong Line" (TKL) is a major phytogeographic boundary in Southwest China, separating East Asia?s Sino-Himalayan and Sino-Japanese Floras. However, little is known about the importance of this boundary in promoting intra-specific phylogeographic subdivision and divergence. Using chloroplast (cpDNA) and nuclear-intron (nDNA) sequence data, we reconstructed the population history of Sophora davidii, a drought-tolerant riparian shrub widely distributed on either side of the TKL. Specifically, we aimed at testing two long-standing explanations for possible vicariant events across the TKL: (1) Late Pliocene (c. 3 Ma) geological uplift of the eastern Qinghai-Tibetan Plateau; or (2) a sharp environmental gradient associated with the establishment of different monsoon regimes on either side of the TKL during the (Late) Pleistocene. Our genealogical analyses detected a major west-east split in cpDNA, geographically largely consistent with the TKL, and dated to the Pleistocene [c. 1.28 Ma (95% HPD: 0.21?2.96 Ma)]. Furthermore, integrating cpDNA phylogeographic patterns with mismatch analyses, we found multiple refugial isolation and long-term demographic stability of populations in the west (Hengduan Mountain Range) compared to extensive range expansions in the east, possibly during the last glacial period(s), and followed by differentiation into regional sub-lineages (southeast: Yunnan-Guizhou Plateau vs. northeast: Qinling Mts./Loess Plateau). Although nuclear differentiation was less marked, the geographical pattern of nDNA haplotypes provided some further indication of the species? eastward expansion, possibly from source populations located just east of the TKL (Lower Jinshajiang region). Overall, the present data reject the geological (tectonic) explanation for the TKL and, instead, provide supportive evidence for its role as a climatically driven barrier to present-day plant dispersal. In addition, our study highlights changing temperatures and vegetation types during the last glacial period(s), along with aspects of regional topography, to be important determinants of the glacial eastward expansion of S. davidii. In consequence, our study lends support to a ?glacial out-of-Hengduan Mts.? hypothesis for the xerophytic-riparian flora of Southwest China, which in turn is inconsistent with the traditional view of the TKL as a ?classical? vicariant-biogeographic boundary.
Keywords
chloroplast DNA, China, nuclear DNA, phylogeography, Sophora davidii, Tanaka-Kaiyong Line
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S13583
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- Show BibTeX reference
@ARTICLE{TreeBASE2Ref21764,
author = {Dengmei Fan and Jipei Yue and Ze-Long Nie and Zhimin Li and Hans Peter Comes and Hang Sun},
title = {Phylogeography of Sophora davidii (Leguminosae) across the "Tanaka-Kaiyong Line", an important phytogeographic boundary in Southwest China},
year = {2013},
keywords = {chloroplast DNA, China, nuclear DNA, phylogeography, Sophora davidii, Tanaka-Kaiyong Line},
doi = {},
url = {http://},
pmid = {},
journal = {Molecular Ecology},
volume = {},
number = {},
pages = {},
abstract = {The "Tanaka-Kaiyong Line" (TKL) is a major phytogeographic boundary in Southwest China, separating East Asia?s Sino-Himalayan and Sino-Japanese Floras. However, little is known about the importance of this boundary in promoting intra-specific phylogeographic subdivision and divergence. Using chloroplast (cpDNA) and nuclear-intron (nDNA) sequence data, we reconstructed the population history of Sophora davidii, a drought-tolerant riparian shrub widely distributed on either side of the TKL. Specifically, we aimed at testing two long-standing explanations for possible vicariant events across the TKL: (1) Late Pliocene (c. 3 Ma) geological uplift of the eastern Qinghai-Tibetan Plateau; or (2) a sharp environmental gradient associated with the establishment of different monsoon regimes on either side of the TKL during the (Late) Pleistocene. Our genealogical analyses detected a major west-east split in cpDNA, geographically largely consistent with the TKL, and dated to the Pleistocene [c. 1.28 Ma (95% HPD: 0.21?2.96 Ma)]. Furthermore, integrating cpDNA phylogeographic patterns with mismatch analyses, we found multiple refugial isolation and long-term demographic stability of populations in the west (Hengduan Mountain Range) compared to extensive range expansions in the east, possibly during the last glacial period(s), and followed by differentiation into regional sub-lineages (southeast: Yunnan-Guizhou Plateau vs. northeast: Qinling Mts./Loess Plateau). Although nuclear differentiation was less marked, the geographical pattern of nDNA haplotypes provided some further indication of the species? eastward expansion, possibly from source populations located just east of the TKL (Lower Jinshajiang region). Overall, the present data reject the geological (tectonic) explanation for the TKL and, instead, provide supportive evidence for its role as a climatically driven barrier to present-day plant dispersal. In addition, our study highlights changing temperatures and vegetation types during the last glacial period(s), along with aspects of regional topography, to be important determinants of the glacial eastward expansion of S. davidii. In consequence, our study lends support to a ?glacial out-of-Hengduan Mts.? hypothesis for the xerophytic-riparian flora of Southwest China, which in turn is inconsistent with the traditional view of the TKL as a ?classical? vicariant-biogeographic boundary.}
}
- Show RIS reference
TY - JOUR
ID - 21764
AU - Fan,Dengmei
AU - Yue,Jipei
AU - Nie,Ze-Long
AU - Li,Zhimin
AU - Comes,Hans Peter
AU - Sun,Hang
T1 - Phylogeography of Sophora davidii (Leguminosae) across the "Tanaka-Kaiyong Line", an important phytogeographic boundary in Southwest China
PY - 2013
KW - chloroplast DNA
KW - China
KW - nuclear DNA
KW - phylogeography
KW - Sophora davidii
KW - Tanaka-Kaiyong Line
UR - http://dx.doi.org/
N2 - The "Tanaka-Kaiyong Line" (TKL) is a major phytogeographic boundary in Southwest China, separating East Asia?s Sino-Himalayan and Sino-Japanese Floras. However, little is known about the importance of this boundary in promoting intra-specific phylogeographic subdivision and divergence. Using chloroplast (cpDNA) and nuclear-intron (nDNA) sequence data, we reconstructed the population history of Sophora davidii, a drought-tolerant riparian shrub widely distributed on either side of the TKL. Specifically, we aimed at testing two long-standing explanations for possible vicariant events across the TKL: (1) Late Pliocene (c. 3 Ma) geological uplift of the eastern Qinghai-Tibetan Plateau; or (2) a sharp environmental gradient associated with the establishment of different monsoon regimes on either side of the TKL during the (Late) Pleistocene. Our genealogical analyses detected a major west-east split in cpDNA, geographically largely consistent with the TKL, and dated to the Pleistocene [c. 1.28 Ma (95% HPD: 0.21?2.96 Ma)]. Furthermore, integrating cpDNA phylogeographic patterns with mismatch analyses, we found multiple refugial isolation and long-term demographic stability of populations in the west (Hengduan Mountain Range) compared to extensive range expansions in the east, possibly during the last glacial period(s), and followed by differentiation into regional sub-lineages (southeast: Yunnan-Guizhou Plateau vs. northeast: Qinling Mts./Loess Plateau). Although nuclear differentiation was less marked, the geographical pattern of nDNA haplotypes provided some further indication of the species? eastward expansion, possibly from source populations located just east of the TKL (Lower Jinshajiang region). Overall, the present data reject the geological (tectonic) explanation for the TKL and, instead, provide supportive evidence for its role as a climatically driven barrier to present-day plant dispersal. In addition, our study highlights changing temperatures and vegetation types during the last glacial period(s), along with aspects of regional topography, to be important determinants of the glacial eastward expansion of S. davidii. In consequence, our study lends support to a ?glacial out-of-Hengduan Mts.? hypothesis for the xerophytic-riparian flora of Southwest China, which in turn is inconsistent with the traditional view of the TKL as a ?classical? vicariant-biogeographic boundary.
L3 -
JF - Molecular Ecology
VL -
IS -
ER -