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  1. 010 学術雑誌論文
  2. 渡辺, 正勝 / WATANABE, Masakatsu

Origins of a cyanobacterial 6-phosphogluconate dehydrogenase in plastid-lacking eukaryotes

https://ir.soken.ac.jp/records/3328
https://ir.soken.ac.jp/records/3328
15b8ec0d-2837-4dd5-a68a-ea311096968e
名前 / ファイル ライセンス アクション
1471-2148-8-151.pdf 1471-2148-8-151 (395.8 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2013-01-21
タイトル
タイトル Origins of a cyanobacterial 6-phosphogluconate dehydrogenase in plastid-lacking eukaryotes
タイトル
言語 en
タイトル Origins of a cyanobacterial 6-phosphogluconate dehydrogenase in plastid-lacking eukaryotes
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
著者 MARUYAMA, Shinichiro

× MARUYAMA, Shinichiro

WEKO 822

MARUYAMA, Shinichiro

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MISAWA, Kazuharu

× MISAWA, Kazuharu

WEKO 823

MISAWA, Kazuharu

Search repository
ISEKI, Mineo

× ISEKI, Mineo

WEKO 824

ISEKI, Mineo

Search repository
WATANABE, Masakatsu

× WATANABE, Masakatsu

WEKO 346

WATANABE, Masakatsu

Search repository
NOZAKI, Hisayoshi

× NOZAKI, Hisayoshi

WEKO 825

NOZAKI, Hisayoshi

Search repository
著者別名 渡辺, 正勝

× 渡辺, 正勝

WEKO 345
NRID 1000040124226
e-Rad 40124226

渡辺, 正勝

Search repository
抄録
内容記述タイプ Abstract
内容記述 Background
Plastids have inherited their own genomes from a single cyanobacterial ancestor, but the majority of cyanobacterial genes, once retained in the ancestral plastid genome, have been lost or transferred into the eukaryotic host nuclear genome via endosymbiotic gene transfer. Although previous studies showed that cyanobacterial gnd genes, which encode 6-phosphogluconate dehydrogenase, are present in several plastid-lacking protists as well as primary and secondary plastid-containing phototrophic eukaryotes, the evolutionary paths of these genes remain elusive.

Results
Here we show an extended phylogenetic analysis including novel gnd gene sequences from Excavata and Glaucophyta. Our analysis demonstrated the patchy distribution of the excavate genes in the gnd gene phylogeny. The Diplonema gene was related to cytosol-type genes in red algae and Opisthokonta, while heterolobosean genes occupied basal phylogenetic positions with plastid-type red algal genes within the monophyletic eukaryotic group that is sister to cyanobacterial genes. Statistical tests based on exhaustive maximum likelihood analyses strongly rejected that heterolobosean gnd genes were derived from a secondary plastid of green lineage. In addition, the cyanobacterial gnd genes from phototrophic and phagotrophic species in Euglenida were robustly monophyletic with Stramenopiles, and this monophyletic clade was moderately separated from those of red algae. These data suggest that these secondary phototrophic groups might have acquired the cyanobacterial genes independently of secondary endosymbioses.

Conclusion
We propose an evolutionary scenario in which plastid-lacking Excavata acquired cyanobacterial gnd genes via eukaryote-to-eukaryote lateral gene transfer or primary endosymbiotic gene transfer early in eukaryotic evolution, and then lost either their pre-existing or cyanobacterial gene.
書誌情報 BMC Evolutionary Biology
en : BMC Evolutionary Biology

巻 8, 号 1, 発行日 2008-05-17
出版者
出版者 BioMed Central
ISSN
収録物識別子タイプ ISSN
収録物識別子 14712148
DOI
関連タイプ isIdenticalTo
識別子タイプ DOI
関連識別子 https://doi.org/10.1186/1471-2148-8-151
関連名称 10.1186/1471-2148-8-151
権利
権利情報 © 2008 Maruyama et al; licensee BioMed Central Ltd.
関連サイト
識別子タイプ URI
関連識別子 http://www.biomedcentral.com/about/license
関連名称 Copyright
フォーマット
内容記述タイプ Other
内容記述 application/pdf
著者版フラグ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
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