Estimation of divergence times in cnidarian evolution based on mitochondrial protein-coding genes and the fossil record

Eunji Park; Dae Sik Hwang; Jae Seong Lee; Jun Im Song; Tae Kun Seo; Yong Jin Won

doi:10.1016/j.ympev.2011.10.008

Estimation of divergence times in cnidarian evolution based on mitochondrial protein-coding genes and the fossil record

Eunji Park, Dae Sik Hwang, Jae Seong Lee, Jun Im Song, Tae Kun Seo, Yong Jin Won

Divison of EcoScience

Research output: Contribution to journal › Article › peer-review

190 Scopus citations

Abstract

The phylum Cnidaria is comprised of remarkably diverse and ecologically significant taxa, such as the reef-forming corals, and occupies a basal position in metazoan evolution. The origin of this phylum and the most recent common ancestors (MRCAs) of its modern classes remain mostly unknown, although scattered fossil evidence provides some insights on this topic. Here, we investigate the molecular divergence times of the major taxonomic groups of Cnidaria (27 Hexacorallia, 16 Octocorallia, and 5 Medusozoa) on the basis of mitochondrial DNA sequences of 13 protein-coding genes. For this analysis, the complete mitochondrial genomes of seven octocoral and two scyphozoan species were newly sequenced and combined with all available mitogenomic data from GenBank. Five reliable fossil dates were used to calibrate the Bayesian estimates of divergence times. The molecular evidence suggests that cnidarians originated 741 million years ago (Ma) (95% credible region of 686-819), and the major taxa diversified prior to the Cambrian (543. Ma). The Octocorallia and Scleractinia may have originated from radiations of survivors of the Permian-Triassic mass extinction, which matches their fossil record well.

Original language	English
Pages (from-to)	329-345
Number of pages	17
Journal	Molecular Phylogenetics and Evolution
Volume	62
Issue number	1
DOIs	https://doi.org/10.1016/j.ympev.2011.10.008
State	Published - Jan 2012

Bibliographical note

Funding Information:
We thank Robert C. Vrijenhoek, Steven H.D. Haddock, and two anonymous reviewers for their constructive criticism, which has improved this paper. We also thank the members of the Korean Coral Resource Bank at Ewha Womans University for generously providing the specimens of octocoral species examined in the present study. The present work was supported by the grant for “The Genetic Evaluation of Important Biological Resources” (No. 074-1800-1844-304) funded by the National Institute of Biological Resources (NIBR), Korean Government, to Y.-J. Won. T.-K. Seo was supported by Grant-in-Aid for Scientific Research(C-23570108) of Japan.

Keywords

Cnidaria
Divergence times
Hexacorallia
Medusozoa
Mitochondrial genome
Octocorallia

Access to Document

10.1016/j.ympev.2011.10.008

Cite this

@article{563b4d6f2ac9415e98c20ac84b00775d,

title = "Estimation of divergence times in cnidarian evolution based on mitochondrial protein-coding genes and the fossil record",

abstract = "The phylum Cnidaria is comprised of remarkably diverse and ecologically significant taxa, such as the reef-forming corals, and occupies a basal position in metazoan evolution. The origin of this phylum and the most recent common ancestors (MRCAs) of its modern classes remain mostly unknown, although scattered fossil evidence provides some insights on this topic. Here, we investigate the molecular divergence times of the major taxonomic groups of Cnidaria (27 Hexacorallia, 16 Octocorallia, and 5 Medusozoa) on the basis of mitochondrial DNA sequences of 13 protein-coding genes. For this analysis, the complete mitochondrial genomes of seven octocoral and two scyphozoan species were newly sequenced and combined with all available mitogenomic data from GenBank. Five reliable fossil dates were used to calibrate the Bayesian estimates of divergence times. The molecular evidence suggests that cnidarians originated 741 million years ago (Ma) (95% credible region of 686-819), and the major taxa diversified prior to the Cambrian (543. Ma). The Octocorallia and Scleractinia may have originated from radiations of survivors of the Permian-Triassic mass extinction, which matches their fossil record well.",

keywords = "Cnidaria, Divergence times, Hexacorallia, Medusozoa, Mitochondrial genome, Octocorallia",

author = "Eunji Park and Hwang, {Dae Sik} and Lee, {Jae Seong} and Song, {Jun Im} and Seo, {Tae Kun} and Won, {Yong Jin}",

note = "Funding Information: We thank Robert C. Vrijenhoek, Steven H.D. Haddock, and two anonymous reviewers for their constructive criticism, which has improved this paper. We also thank the members of the Korean Coral Resource Bank at Ewha Womans University for generously providing the specimens of octocoral species examined in the present study. The present work was supported by the grant for “The Genetic Evaluation of Important Biological Resources” (No. 074-1800-1844-304) funded by the National Institute of Biological Resources (NIBR), Korean Government, to Y.-J. Won. T.-K. Seo was supported by Grant-in-Aid for Scientific Research(C-23570108) of Japan. ",

year = "2012",

month = jan,

doi = "10.1016/j.ympev.2011.10.008",

language = "English",

volume = "62",

pages = "329--345",

journal = "Molecular Phylogenetics and Evolution",

issn = "1055-7903",

publisher = "Academic Press Inc.",

number = "1",

}

TY - JOUR

T1 - Estimation of divergence times in cnidarian evolution based on mitochondrial protein-coding genes and the fossil record

AU - Park, Eunji

AU - Hwang, Dae Sik

AU - Lee, Jae Seong

AU - Song, Jun Im

AU - Seo, Tae Kun

AU - Won, Yong Jin

N1 - Funding Information: We thank Robert C. Vrijenhoek, Steven H.D. Haddock, and two anonymous reviewers for their constructive criticism, which has improved this paper. We also thank the members of the Korean Coral Resource Bank at Ewha Womans University for generously providing the specimens of octocoral species examined in the present study. The present work was supported by the grant for “The Genetic Evaluation of Important Biological Resources” (No. 074-1800-1844-304) funded by the National Institute of Biological Resources (NIBR), Korean Government, to Y.-J. Won. T.-K. Seo was supported by Grant-in-Aid for Scientific Research(C-23570108) of Japan.

PY - 2012/1

Y1 - 2012/1

N2 - The phylum Cnidaria is comprised of remarkably diverse and ecologically significant taxa, such as the reef-forming corals, and occupies a basal position in metazoan evolution. The origin of this phylum and the most recent common ancestors (MRCAs) of its modern classes remain mostly unknown, although scattered fossil evidence provides some insights on this topic. Here, we investigate the molecular divergence times of the major taxonomic groups of Cnidaria (27 Hexacorallia, 16 Octocorallia, and 5 Medusozoa) on the basis of mitochondrial DNA sequences of 13 protein-coding genes. For this analysis, the complete mitochondrial genomes of seven octocoral and two scyphozoan species were newly sequenced and combined with all available mitogenomic data from GenBank. Five reliable fossil dates were used to calibrate the Bayesian estimates of divergence times. The molecular evidence suggests that cnidarians originated 741 million years ago (Ma) (95% credible region of 686-819), and the major taxa diversified prior to the Cambrian (543. Ma). The Octocorallia and Scleractinia may have originated from radiations of survivors of the Permian-Triassic mass extinction, which matches their fossil record well.

AB - The phylum Cnidaria is comprised of remarkably diverse and ecologically significant taxa, such as the reef-forming corals, and occupies a basal position in metazoan evolution. The origin of this phylum and the most recent common ancestors (MRCAs) of its modern classes remain mostly unknown, although scattered fossil evidence provides some insights on this topic. Here, we investigate the molecular divergence times of the major taxonomic groups of Cnidaria (27 Hexacorallia, 16 Octocorallia, and 5 Medusozoa) on the basis of mitochondrial DNA sequences of 13 protein-coding genes. For this analysis, the complete mitochondrial genomes of seven octocoral and two scyphozoan species were newly sequenced and combined with all available mitogenomic data from GenBank. Five reliable fossil dates were used to calibrate the Bayesian estimates of divergence times. The molecular evidence suggests that cnidarians originated 741 million years ago (Ma) (95% credible region of 686-819), and the major taxa diversified prior to the Cambrian (543. Ma). The Octocorallia and Scleractinia may have originated from radiations of survivors of the Permian-Triassic mass extinction, which matches their fossil record well.

KW - Cnidaria

KW - Divergence times

KW - Hexacorallia

KW - Medusozoa

KW - Mitochondrial genome

KW - Octocorallia

UR - http://www.scopus.com/inward/record.url?scp=83655163700&partnerID=8YFLogxK

U2 - 10.1016/j.ympev.2011.10.008

DO - 10.1016/j.ympev.2011.10.008

M3 - Article

C2 - 22040765

AN - SCOPUS:83655163700

SN - 1055-7903

VL - 62

SP - 329

EP - 345

JO - Molecular Phylogenetics and Evolution

JF - Molecular Phylogenetics and Evolution

IS - 1

ER -

Estimation of divergence times in cnidarian evolution based on mitochondrial protein-coding genes and the fossil record

Abstract

Bibliographical note

Keywords

Access to Document

Fingerprint

Cite this