ArticleGenome biology and evolution2009
The complete plastid genome sequence of the secondarily nonphotosynthetic alga Cryptomonas paramecium: reduction, compaction, and accelerated evolutionary rate.
Article in Genome biology and evolution, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.
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Who cites it
34 citing papers in PubMed, 76 citations in OpenAlex.
- Diatom heterotrophy on brown algal polysaccharides emerged through horizontal gene transfer, gene duplication, and neofunctionalization.PLoS biology · 2025Article
- Cultivation, genomics, and giant viruses of a ubiquitous and heterotrophic freshwater cryptomonad.The ISME journal · 2025Article
- Reduced plastid genomes of colorless facultative pathogens Prototheca (Chlorophyta) are retained for membrane transport genes.BMC biology · 2024Article
- A cryptic plastid and a novel mitochondrial plasmid inOpen biology · 2024Article
- Article
- Comparative Plastid Genomics of Green-Colored Dinoflagellates Unveils Parallel Genome Compaction and RNA Editing.Frontiers in plant science · 2022Article
- The Cryptic Plastid ofmSphere · 2020Article
- Genomic Insights into Plastid Evolution.Genome biology and evolution · 2020Review
- Comparative Plastid Genomics of Cryptomonas Species Reveals Fine-Scale Genomic Responses to Loss of Photosynthesis.Genome biology and evolution · 2020Article
- Highly Reduced Plastid Genomes of the Non-photosynthetic DictyochophyceansFrontiers in plant science · 2020Article
- Comparative Plastid Genomics of Non-Photosynthetic Chrysophytes: Genome Reduction and Compaction.Frontiers in plant science · 2020Article
- Optimal Growth Temperature and Intergenic Distances in Bacteria, Archaea, and Plastids of Rhodophytic Branch.BioMed research international · 2020Article
- Principles of plastid reductive evolution illuminated by nonphotosynthetic chrysophytes.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- Comparative mitochondrial genomics of cryptophyte algae: gene shuffling and dynamic mobile genetic elements.BMC genomics · 2018Article
- Reductive evolution of chloroplasts in non-photosynthetic plants, algae and protists.Current genetics · 2018Review
- Multiple losses of photosynthesis and convergent reductive genome evolution in the colourless green algae Prototheca.Scientific reports · 2018Article
- Article
- Strategies for complete plastid genome sequencing.Molecular ecology resources · 2017Review
- Multiple origins of endosymbionts in Chlorellaceae with no reductive effects on the plastid or mitochondrial genomes.Scientific reports · 2017Article
- Evolutionary Dynamics of Cryptophyte Plastid Genomes.Genome biology and evolution · 2017Article
Corrections and comments
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Authors and funding
7 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The cryptomonads are a group of unicellular algae that acquired photosynthesis through the engulfment of a red algal cell, a process called secondary endosymbiosis. Here, we present the complete plastid genome sequence of the secondarily nonphotosynthetic species Cryptomonas paramecium CCAP977/2a. The approximately 78 kilobase pair (Kbp) C. paramecium genome contains 82 predicted protein genes, 29 transfer RNA genes, and a single pseudogene (atpF). The C. paramecium plastid genome is approximately 50 Kbp smaller than those of the photosynthetic cryptomonads Guillardia theta and Rhodomonas salina; 71 genes present in the G. theta and/or R. salina plastid genomes are missing in C. paramecium. The pet, psa, and psb photosynthetic gene families are almost entirely absent. Interestingly, the ribosomal RNA operon, present as inverted repeats in most plastid genomes (including G. theta and R. salina), exists as a single copy in C. paramecium. The G + C content (38%) is higher in C. paramecium than in other cryptomonad plastid genomes, and C. paramecium plastid genes are characterized by significantly different codon usage patterns and increased evolutionary rates. The content and structure of the C. paramecium plastid genome provides insight into the changes associated with recent loss of photosynthesis in a predominantly photosynthetic group of algae and reveals features shared with the plastid genomes of other secondarily nonphotosynthetic eukaryotes.
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