2007 Fiscal Year Final Research Report Summary
Evolution of Globin and Hatching Enzyme Genes in Teleosts
| Project/Area Number |
17570189
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Evolutionary biology
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| Research Institution | Sophia University |
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Principal Investigator |
IUCHI Ichiro Sophia University, Institute of Science and Technology, Professor (10011694)
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| Co-Investigator(Kenkyū-buntansha) |
YASUMASU Shigeki Sophia University, Institute of Science and Technology, Professor (00222357)
IUCHI Ichiro Sophia University, Institute of Science and Technology, Professor (10011694)
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| Project Period (FY) |
2005 – 2007
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| Keywords | Gene / Genome / Evolution / Protein / Hemoglobin / Hatching Enzyme |
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| Research Abstract |
In the present research project, we clarified three characteristics of globin gene structure and expression in medaka: 1) head-to-head orientation of major α and β globin genes, 2) existence of cis-regulatory regions responsible for spatio-temporal expression of the genes 1Kb-5'upstream to the respective genes, 3) localization of the globin genes in 2 clusters on 2 chromosomes. Molecular phylogenetic analysis showed that all the teleostean globin genes were assigned into 4 groups, and in the medaka genome, the genes for one of the 4 that functions as an adult globin were pseudogenized during evolution.
In addition, we identified hatching enzyme genes in the genomes of about 30 teleosts. The results showed that the hatching enzyme genes in fishes belonging to Elopomorpha were ancestral, and were diversified into 2 groups of genes in the descendants Otocephara and Euteleostei. Especially, the EICE genes of Euteleostei would be established by "phylogeny-dependent, step-by-step intron-loss" evolution.
The evolutionary feature of globin and hatching enzyme genes reflects a characteristic of Teleost such that they could adapt in extremely diversified environments during evolution.
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[Journal Article] Hatching enzyme of ovoviviparous black rockfish Sebastes schlegelii:environmental adaptation of hatching enzyme and evolutionary aspects of formation of pseudogene2008
Author(s)
Kawaguchi, M., Nakagawa, M., Noda, T., Yoshizaki, N., Hiroi, J., Nishida, M., Iuchi, I., Yasumasu, S.
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Journal Title
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Hatching enzyme of ovoviviparous black rockfish Sebastes schlegelii : environmental adaptation of hatching enzyme and evolutionary aspects of formation of pseudogene2008
Author(s)
Kawaguchi, M., Nakagawa, M., Noda, T., Yoshizaki, N., Hiroi, J., Nishida, M., Iuchi, I., Yasumasu, S
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Journal Title
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Analysis of the exon-intron structures of fish,amphibian,bird and mammalian hatching enzyme genes,with special reference to the intron loss evolution of hatching enzyme genes in Teleostei2007
Author(s)
Kawaguchi, M., Yasumasu, S., Hiroi.J., Naruse, N., Suzuki, T.and luchi, I.
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Journal Title
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Analysis of the exon-intron structures of fish, amphibian, bird and mammalian hatching enzyme genes, with special reference to the intron loss evolution of hatching enzyme genes in Teleostei2007
Author(s)
Kawaguchi, M., Yasumasu, S., Hiroi, J., Naruse, N., Suzuki, T. and Iuchi, I
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Journal Title
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Pseudogenization of LCE(One of Hatching Enzyme) Gene in Ovoviviparous Black Rockfish Sebastes schlegelii
Author(s)
Kawaguchi, M., Yasumasu, S., Hiroi, J., Nakagawa, M., Noda, T., Iuchi, I
Organizer
Society of Evolutionary Studies, Japan
Place of Presentation
Kyoto
Year and Date
00000831-0902
Description
「研究成果報告書概要(欧文)」より
