Protists harbouring kleptochloroplast in particular reference to the dinoflagellates

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  • Yamaguchi Haruyo
    Graduate School of Life and Environmental Sciences, University of Tsukuba
  • Nakayama Takeshi
    Graduate School of Life and Environmental Sciences, University of Tsukuba
  • Inouye Isao
    Graduate School of Life and Environmental Sciences, University of Tsukuba

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Other Title
  • クレプトクロロプラストを持つ原生生物、特に渦鞭毛藻について
  • クレプトクロロプラスト オ モツ ゲンセイ セイブツ トクニ ウズベンモウソウ ニ ツイテ

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Abstract

<p>It is known that dinoflagellates acquired a plastid from a red alga via secondary endosymbiosis. However, several dinoflagellates should have abandoned their original plastid and acquired again plastids from different sources. Engulfing free-living algae, some dinoflagellates use them as a temporary plastid. This phenomenon is considered to be an on-going process of plastid acquisition, and this temporary plastid is called “kleptochloroplast”. In a probably monophyletic groups of unarmoured dinoflagellates, various stages of endosymbiosis, namely, reduction of endosymbiont's organelles except plastid, are present, which would be good research targets for understanding evolutionary process of plastid acquisition. Besides dinoflagellates, kleptochloroplasts are distributed in a wide range of protists. In this mini review, we introduce diversity of kleptochloroplasts in protists in particular reference to the dinoflagellates.</p>

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