The dinoflagellates <Emphasis Type="Italic">Durinskia baltica</Emphasis> and <Emphasis Type="Italic">Kryptoperidinium foliaceum</Emphasis> retain functionally overlapping mitochondria from two evolutionarily distinct lineages |
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Authors: | Behzad Imanian Patrick J Keeling |
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Institution: | (1) Canadian Institute for Advanced Research, Department of Botany, University of British Columbia, 3529-6270 University Boulevard, Vancouver, British Columbia, V6T 1Z4, Canada |
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Abstract: | Background The dinoflagellates Durinskia baltica and Kryptoperidinium foliaceum are distinguished by the presence of a tertiary plastid derived from a diatom endosymbiont. The diatom is fully integrated
with the host cell cycle and is so altered in structure as to be difficult to recognize it as a diatom, and yet it retains
a number of features normally lost in tertiary and secondary endosymbionts, most notably mitochondria. The dinoflagellate
host is also reported to retain mitochondrion-like structures, making these cells unique in retaining two evolutionarily distinct
mitochondria. This redundancy raises the question of whether the organelles share any functions in common or have distributed
functions between them. |
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Keywords: | |
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