Genes functioned in kleptoplastids of Dinophysis are derived from haptophytes rather than from cryptophytes

Abstract Toxic dinoflagellates belonging to the genus Dinophysis acquire plastids indirectly from cryptophytes through the consumption of the ciliate Mesodinium rubrum. Dinophysis acuminata harbours three genes encoding plastid-related proteins, which are thought to have originated from fucoxanthin...

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Autores principales:	Yuki Hongo, Akinori Yabuki, Katsunori Fujikura, Satoshi Nagai
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3eb2b688f6b74c8799d92c16e6e858d4
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spelling	oai:doaj.org-article:3eb2b688f6b74c8799d92c16e6e858d42021-12-02T15:09:29ZGenes functioned in kleptoplastids of Dinophysis are derived from haptophytes rather than from cryptophytes10.1038/s41598-019-45326-52045-2322https://doaj.org/article/3eb2b688f6b74c8799d92c16e6e858d42019-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-45326-5https://doaj.org/toc/2045-2322Abstract Toxic dinoflagellates belonging to the genus Dinophysis acquire plastids indirectly from cryptophytes through the consumption of the ciliate Mesodinium rubrum. Dinophysis acuminata harbours three genes encoding plastid-related proteins, which are thought to have originated from fucoxanthin dinoflagellates, haptophytes and cryptophytes via lateral gene transfer (LGT). Here, we investigate the origin of these plastid proteins via RNA sequencing of species related to D. fortii. We identified 58 gene products involved in porphyrin, chlorophyll, isoprenoid and carotenoid biosyntheses as well as in photosynthesis. Phylogenetic analysis revealed that the genes associated with chlorophyll and carotenoid biosyntheses and photosynthesis originated from fucoxanthin dinoflagellates, haptophytes, chlorarachniophytes, cyanobacteria and cryptophytes. Furthermore, nine genes were laterally transferred from fucoxanthin dinoflagellates, whose plastids were derived from haptophytes. Notably, transcription levels of different plastid protein isoforms varied significantly. Based on these findings, we put forth a novel hypothesis regarding the evolution of Dinophysis plastids that ancestral Dinophysis species acquired plastids from haptophytes or fucoxanthin dinoflagellates, whereas LGT from cryptophytes occurred more recently. Therefore, the evolutionary convergence of genes following LGT may be unlikely in most cases.Yuki HongoAkinori YabukiKatsunori FujikuraSatoshi NagaiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yuki Hongo Akinori Yabuki Katsunori Fujikura Satoshi Nagai Genes functioned in kleptoplastids of Dinophysis are derived from haptophytes rather than from cryptophytes
description	Abstract Toxic dinoflagellates belonging to the genus Dinophysis acquire plastids indirectly from cryptophytes through the consumption of the ciliate Mesodinium rubrum. Dinophysis acuminata harbours three genes encoding plastid-related proteins, which are thought to have originated from fucoxanthin dinoflagellates, haptophytes and cryptophytes via lateral gene transfer (LGT). Here, we investigate the origin of these plastid proteins via RNA sequencing of species related to D. fortii. We identified 58 gene products involved in porphyrin, chlorophyll, isoprenoid and carotenoid biosyntheses as well as in photosynthesis. Phylogenetic analysis revealed that the genes associated with chlorophyll and carotenoid biosyntheses and photosynthesis originated from fucoxanthin dinoflagellates, haptophytes, chlorarachniophytes, cyanobacteria and cryptophytes. Furthermore, nine genes were laterally transferred from fucoxanthin dinoflagellates, whose plastids were derived from haptophytes. Notably, transcription levels of different plastid protein isoforms varied significantly. Based on these findings, we put forth a novel hypothesis regarding the evolution of Dinophysis plastids that ancestral Dinophysis species acquired plastids from haptophytes or fucoxanthin dinoflagellates, whereas LGT from cryptophytes occurred more recently. Therefore, the evolutionary convergence of genes following LGT may be unlikely in most cases.
format	article
author	Yuki Hongo Akinori Yabuki Katsunori Fujikura Satoshi Nagai
author_facet	Yuki Hongo Akinori Yabuki Katsunori Fujikura Satoshi Nagai
author_sort	Yuki Hongo
title	Genes functioned in kleptoplastids of Dinophysis are derived from haptophytes rather than from cryptophytes
title_short	Genes functioned in kleptoplastids of Dinophysis are derived from haptophytes rather than from cryptophytes
title_full	Genes functioned in kleptoplastids of Dinophysis are derived from haptophytes rather than from cryptophytes
title_fullStr	Genes functioned in kleptoplastids of Dinophysis are derived from haptophytes rather than from cryptophytes
title_full_unstemmed	Genes functioned in kleptoplastids of Dinophysis are derived from haptophytes rather than from cryptophytes
title_sort	genes functioned in kleptoplastids of dinophysis are derived from haptophytes rather than from cryptophytes
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/3eb2b688f6b74c8799d92c16e6e858d4
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Genes functioned in kleptoplastids of Dinophysis are derived from haptophytes rather than from cryptophytes

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