Journal article
The genome of Prasinoderma coloniale unveils the existence of a third phylum within green plants
Department of Biotechnology and Biomedicine, Technical University of Denmark1
Section for Microbial and Chemical Ecology, Department of Biotechnology and Biomedicine, Technical University of Denmark2
Bacterial Ecophysiology and Biotechnology, Section for Microbial and Chemical Ecology, Department of Biotechnology and Biomedicine, Technical University of Denmark3
BGI Group4
University of Cologne5
Ghent University6
University of Copenhagen7
South China University of Technology8
Genome analysis of the pico-eukaryotic marine green alga Prasinoderma coloniale CCMP 1413 unveils the existence of a novel phylum within green plants (Viridiplantae), the Prasinodermophyta, which diverged before the split of Chlorophyta and Streptophyta. Structural features of the genome and gene family comparisons revealed an intermediate position of the P. coloniale genome (25.3 Mb) between the extremely compact, small genomes of picoplanktonic Mamiellophyceae (Chlorophyta) and the larger, more complex genomes of early-diverging streptophyte algae.
Reconstruction of the minimal core genome of Viridiplantae allowed identification of an ancestral toolkit of transcription factors and flagellar proteins. Adaptations of P. coloniale to its deep-water, oligotrophic environment involved expansion of light-harvesting proteins, reduction of early light-induced proteins, evolution of a distinct type of C4 photosynthesis and carbon-concentrating mechanism, synthesis of the metal-complexing metabolite picolinic acid, and vitamin B1, B7 and B12 auxotrophy.
The P. coloniale genome provides first insights into the dawn of green plant evolution.
Language: | English |
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Publisher: | Nature Publishing Group UK |
Year: | 2020 |
Pages: | 1220-1231 |
ISSN: | 2397334x |
Types: | Journal article |
DOI: | 10.1038/s41559-020-1221-7 |
ORCIDs: | 0000-0002-4742-9870 , 0000-0002-4287-2099 , 0000-0001-8920-9270 , 0000-0001-6108-5560 , 0000-0002-5338-5173 , 0000-0003-3256-2940 , 0000-0003-4327-3730 , 0000-0003-3909-0931 and 0000-0002-3035-5991 |