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| Description
| - Cryptophyte and chlorarachniophyte algae are transitional forms in the widespread secondary endosymbiotic acquisition of photosynthesis by engulfment of eukaryotic algae. Unlike most secondary plastid-bearing algae, miniaturized versions of the endosymbiont nuclei (nucleomorphs) persist in cryptophytes and chlorarachniophytes. To determine why, and to address other fundamental questions about eukaryote-eukaryote endosymbiosis, we sequenced the nuclear genomes of the cryptophyte Guillardia theta and the chlorarachniophyte Bigelowiella natans. Both genomes have }21,000 protein genes and are intron rich, and B. natans exhibits unprecedented alternative splicing for a single-celled organism. Phylogenomic analyses and subcellular targeting predictions reveal extensive genetic and biochemical mosaicism, with both host-and endosymbiont-derived genes servicing the mitochondrion, the host cell cytosol, the plastid and the remnant endosymbiont cytosol of both algae. Mitochondrion-to-nucleus gene transfer still occurs in both organisms but plastid-to-nucleus and nucleomorph-to-nucleus transfers do not, which explains why a small residue of essential genes remains locked in each nucleomorph.
- Cryptophyte and chlorarachniophyte algae are transitional forms in the widespread secondary endosymbiotic acquisition of photosynthesis by engulfment of eukaryotic algae. Unlike most secondary plastid-bearing algae, miniaturized versions of the endosymbiont nuclei (nucleomorphs) persist in cryptophytes and chlorarachniophytes. To determine why, and to address other fundamental questions about eukaryote-eukaryote endosymbiosis, we sequenced the nuclear genomes of the cryptophyte Guillardia theta and the chlorarachniophyte Bigelowiella natans. Both genomes have }21,000 protein genes and are intron rich, and B. natans exhibits unprecedented alternative splicing for a single-celled organism. Phylogenomic analyses and subcellular targeting predictions reveal extensive genetic and biochemical mosaicism, with both host-and endosymbiont-derived genes servicing the mitochondrion, the host cell cytosol, the plastid and the remnant endosymbiont cytosol of both algae. Mitochondrion-to-nucleus gene transfer still occurs in both organisms but plastid-to-nucleus and nucleomorph-to-nucleus transfers do not, which explains why a small residue of essential genes remains locked in each nucleomorph. (en)
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| Title
| - Algal genomes reveal evolutionary mosaicism and the fate of nucleomorphs
- Algal genomes reveal evolutionary mosaicism and the fate of nucleomorphs (en)
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| skos:prefLabel
| - Algal genomes reveal evolutionary mosaicism and the fate of nucleomorphs
- Algal genomes reveal evolutionary mosaicism and the fate of nucleomorphs (en)
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| skos:notation
| - RIV/60076658:12310/12:43884121!RIV13-MSM-12310___
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| http://linked.open...avai/predkladatel
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60076658:12310/12:43884121
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - cryptophytes; origin; sequence; proteins; chlorarachniophyte; nucleus; guillardia-theta; eukaryotic genomes; bigelowiella-natans; gene-transfer (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Henrissat, Bernard
- Kuo, Alan
- Schmutz, Jeremy
- …
- Oborník, Miroslav
- Kořený, Luděk
- Arias, Maria C.
- Armbrust, E. Virginia
- Aves, Stephen J.
- Ball, Steven G.
- Beiko, Robert G.
- Burki, Fabien
- Coutinho, Pedro
- Curtis, Bruce A.
- Dacks, Joel B.
- Durnford, Dion G.
- Elias, Marek
- Eveleigh, Robert J. M.
- Fast, Naomi M.
- Gile, Gillian H.
- Green, Beverley R.
- Grisdale, Cameron J.
- Gruber, Ansgar
- Hempel, Franziska
- Herman, Emily K.
- Hirakawa, Yoshihisa
- Hoeppner, Marc P.
- Hopkins, Julia F.
- Irimia, Manuel
- Ishida, Ken-Ichiro
- Kim, Eunsoo
- Kroth, Peter G.
- Liu, Yuan
- Maier, Uwe G.
- Malik, Shehre-Banoo
- Maruyama, Shinichiro
- McRose, Darcy
- Mock, Thomas
- Neilson, Jonathan A. D.
- Onodera, Naoko T.
- Poole, Anthony M.
- Pritham, Ellen J.
- Rensing, Stefan A.
- Reyes-Prieto, Adrian
- Richards, Thomas A.
- Rocap, Gabrielle
- Roy, Scott W.
- Sarai, Chihiro
- Schaack, Sarah
- Shirato, Shu
- Slamovits, Claudio H.
- Spencer, David F.
- Suzuki, Shigekatsu
- Symeonidi, Aikaterini
- Tanifuji, Goro
- Worden, Alexandra Z.
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