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Molecular phylogeny and biogeography of Pseudotsuga (Pinaceae): insights into the floristic relationship between Taiwan and its adjacent areas.
Mol Phylogenet Evol. 2010 Jun; 55(3):776-85.MP

Abstract

Climatic oscillations and geological events play major roles in shaping species diversity and the distribution of plants. The mechanisms underlying the high level of plant species diversity in eastern Asia are hotly debated. In this study, five cpDNA regions, two mtDNA fragments and one nuclear gene (LEAFY) were employed to investigate species diversification and the historical biogeography of Pseudotsuga (Pinaceae), a genus with a typical eastern Asia and western North America disjunct distribution. Both the nuclear LEAFY gene and cpDNA phylogenies strongly suggest that eastern Asian and North American species are monophyletic, respectively. Within the eastern Asia clade, the cpDNA tree placed P. japonica as sister to the rest of the Asian species, but the LEAFY gene tree showed a sister relationship between P. japonica-P. sinensis-P. gaussenii and P. brevifolia-P. forrestii. Molecular dating indicated that the Asian species last shared a common ancestor 20.26+/-5.84 mya and the species diversification of Pseudotsuga was correlated with the Tertiary climatic and tectonic changes. These results, together with the fossil evidence, suggest that Pseudotsuga might have originated from North America and then migrated to eastern Asia by the Bering land bridge during the early Miocene. The Taiwanese species P. wilsoniana harbored two divergent types of LEAFY sequences, which implies that this species might have originated by hybridization between P. brevifolia or its ancestor and the ancestor of P. japonica-P. sinensis-P. gaussenii. Our study also suggests that Taiwan is closely related to both southwest and east China in flora.

Authors+Show Affiliations

State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China. weixx@ibcas.ac.cnNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20214996

Citation

Wei, Xiao-Xin, et al. "Molecular Phylogeny and Biogeography of Pseudotsuga (Pinaceae): Insights Into the Floristic Relationship Between Taiwan and Its Adjacent Areas." Molecular Phylogenetics and Evolution, vol. 55, no. 3, 2010, pp. 776-85.
Wei XX, Yang ZY, Li Y, et al. Molecular phylogeny and biogeography of Pseudotsuga (Pinaceae): insights into the floristic relationship between Taiwan and its adjacent areas. Mol Phylogenet Evol. 2010;55(3):776-85.
Wei, X. X., Yang, Z. Y., Li, Y., & Wang, X. Q. (2010). Molecular phylogeny and biogeography of Pseudotsuga (Pinaceae): insights into the floristic relationship between Taiwan and its adjacent areas. Molecular Phylogenetics and Evolution, 55(3), 776-85. https://doi.org/10.1016/j.ympev.2010.03.007
Wei XX, et al. Molecular Phylogeny and Biogeography of Pseudotsuga (Pinaceae): Insights Into the Floristic Relationship Between Taiwan and Its Adjacent Areas. Mol Phylogenet Evol. 2010;55(3):776-85. PubMed PMID: 20214996.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Molecular phylogeny and biogeography of Pseudotsuga (Pinaceae): insights into the floristic relationship between Taiwan and its adjacent areas. AU - Wei,Xiao-Xin, AU - Yang,Zu-Yu, AU - Li,Yan, AU - Wang,Xiao-Quan, Y1 - 2010/03/07/ PY - 2009/04/20/received PY - 2010/02/25/revised PY - 2010/03/03/accepted PY - 2010/3/11/entrez PY - 2010/3/11/pubmed PY - 2010/6/17/medline SP - 776 EP - 85 JF - Molecular phylogenetics and evolution JO - Mol Phylogenet Evol VL - 55 IS - 3 N2 - Climatic oscillations and geological events play major roles in shaping species diversity and the distribution of plants. The mechanisms underlying the high level of plant species diversity in eastern Asia are hotly debated. In this study, five cpDNA regions, two mtDNA fragments and one nuclear gene (LEAFY) were employed to investigate species diversification and the historical biogeography of Pseudotsuga (Pinaceae), a genus with a typical eastern Asia and western North America disjunct distribution. Both the nuclear LEAFY gene and cpDNA phylogenies strongly suggest that eastern Asian and North American species are monophyletic, respectively. Within the eastern Asia clade, the cpDNA tree placed P. japonica as sister to the rest of the Asian species, but the LEAFY gene tree showed a sister relationship between P. japonica-P. sinensis-P. gaussenii and P. brevifolia-P. forrestii. Molecular dating indicated that the Asian species last shared a common ancestor 20.26+/-5.84 mya and the species diversification of Pseudotsuga was correlated with the Tertiary climatic and tectonic changes. These results, together with the fossil evidence, suggest that Pseudotsuga might have originated from North America and then migrated to eastern Asia by the Bering land bridge during the early Miocene. The Taiwanese species P. wilsoniana harbored two divergent types of LEAFY sequences, which implies that this species might have originated by hybridization between P. brevifolia or its ancestor and the ancestor of P. japonica-P. sinensis-P. gaussenii. Our study also suggests that Taiwan is closely related to both southwest and east China in flora. SN - 1095-9513 UR - https://www.unboundmedicine.com/medline/citation/20214996/Molecular_phylogeny_and_biogeography_of_Pseudotsuga__Pinaceae_:_insights_into_the_floristic_relationship_between_Taiwan_and_its_adjacent_areas_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1055-7903(10)00105-3 DB - PRIME DP - Unbound Medicine ER -