論文

査読有り 本文へのリンクあり 国際誌
2022年4月29日

Genome evolution of a nonparasitic secondary heterotroph, the diatom Nitzschia putrida.

Science advances
  • Ryoma Kamikawa
  • Takako Mochizuki
  • Mika Sakamoto
  • Yasuhiro Tanizawa
  • Takuro Nakayama
  • Ryo Onuma
  • Ugo Cenci
  • Daniel Moog
  • Samuel Speak
  • Krisztina Sarkozi
  • Andrew Toseland
  • Cock van Oosterhout
  • Kaori Oyama
  • Misako Kato
  • Keitaro Kume
  • Motoki Kayama
  • Tomonori Azuma
  • Ken-Ichiro Ishii
  • Hideaki Miyashita
  • Bernard Henrissat
  • Vincent Lombard
  • Joe Win
  • Sophien Kamoun
  • Yuichiro Kashiyama
  • Shigeki Mayama
  • Shin-Ya Miyagishima
  • Goro Tanifuji
  • Thomas Mock
  • Yasukazu Nakamura
  • 全て表示

8
17
開始ページ
eabi5075
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1126/sciadv.abi5075

Secondary loss of photosynthesis is observed across almost all plastid-bearing branches of the eukaryotic tree of life. However, genome-based insights into the transition from a phototroph into a secondary heterotroph have so far only been revealed for parasitic species. Free-living organisms can yield unique insights into the evolutionary consequence of the loss of photosynthesis, as the parasitic lifestyle requires specific adaptations to host environments. Here, we report on the diploid genome of the free-living diatom Nitzschia putrida (35 Mbp), a nonphotosynthetic osmotroph whose photosynthetic relatives contribute ca. 40% of net oceanic primary production. Comparative analyses with photosynthetic diatoms and heterotrophic algae with parasitic lifestyle revealed that a combination of gene loss, the accumulation of genes involved in organic carbon degradation, a unique secretome, and the rapid divergence of conserved gene families involved in cell wall and extracellular metabolism appear to have facilitated the lifestyle of a free-living secondary heterotroph.

リンク情報
DOI
https://doi.org/10.1126/sciadv.abi5075 本文へのリンクあり
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/35486731
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054022
ID情報
  • DOI : 10.1126/sciadv.abi5075
  • PubMed ID : 35486731
  • PubMed Central 記事ID : PMC9054022

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