ArticlePlant physiology2014
A plastid without a genome: evidence from the nonphotosynthetic green algal genus Polytomella.
Article in Plant physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.
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Who cites it
59 citing papers in PubMed, 141 citations in OpenAlex.
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- Diatom heterotrophy on brown algal polysaccharides emerged through horizontal gene transfer, gene duplication, and neofunctionalization.PLoS biology · 2025Article
- Reduced plastid genomes of colorless facultative pathogens Prototheca (Chlorophyta) are retained for membrane transport genes.BMC biology · 2024Article
- Invited Review Beyond parasitic convergence: unravelling the evolution of the organellar genomes in holoparasites.Annals of botany · 2023Review
- The Sapria himalayana genome provides new insights into the lifestyle of endoparasitic plants.BMC biology · 2023Article
- The plastomes ofPlant direct · 2022Article
- Arginine-Dependent Nitric Oxide Generation and S-Nitrosation in the Non-Photosynthetic Unicellular AlgaAntioxidants (Basel, Switzerland) · 2022Article
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- Organellar Evolution: A Path from Benefit to Dependence.Microorganisms · 2022Review
- Proteomics unveil a central role for peroxisomes in butyrate assimilation of the heterotrophic Chlorophyte algaFrontiers in microbiology · 2022Article
- Plastid NDH Pseudogenization and Gene Loss in a Recently Derived Lineage from the Largest Hemiparasitic Plant Genus Pedicularis (Orobanchaceae).Plant & cell physiology · 2021Article
- Phylogenetic and functional diversity of aldehyde-alcohol dehydrogenases in microalgae.Plant molecular biology · 2021Article
- Editorial: Mixotrophic, Secondary Heterotrophic, and Parasitic Algae.Frontiers in plant science · 2021Article
- The Cryptic Plastid ofmSphere · 2020Article
- A non-photosynthetic green alga illuminates the reductive evolution of plastid electron transport systems.BMC biology · 2020Article
- Genomic Insights into Plastid Evolution.Genome biology and evolution · 2020Review
- Interaction of N-acetyl-l-glutamate kinase with the PII signal transducer in the non-photosynthetic alga Polytomella parva: Co-evolution towards a hetero-oligomeric enzyme.The FEBS journal · 2020Article
- Comparative Plastid Genomics of Cryptomonas Species Reveals Fine-Scale Genomic Responses to Loss of Photosynthesis.Genome biology and evolution · 2020Article
- Optimization of the second internal transcribed spacer (ITS2) for characterizing land plants from soil.PloS one · 2020Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Polytomella spp. are free-living, nonphotosynthetic green algae closely related to the model organism Chlamydomonas reinhardtii. Although colorless, Polytomella spp. have a plastid, but it is still unknown whether they harbor a plastid genome. We took a next generation sequencing approach, along with transcriptome sequencing, to search for a plastid genome and an associated gene expression system in Polytomella spp. Illumina sequencing of total DNA from four Polytomella spp. did not produce any recognizable plastid-derived reads but did generate a large number of mitochondrial DNA sequences. Transcriptomic analysis of Polytomella parva uncovered hundreds of putative nuclear-encoded, plastid-targeted proteins, which support the presence of plastid-based metabolic functions, similar to those observed in the plastids of other nonphotosynthetic algae. Conspicuously absent, however, were any plastid-targeted proteins involved in the expression, replication, or repair of plastid DNA. Based on these findings and earlier findings, we argue that the Polytomella genus represents the first well-supported example, to our knowledge, of a primary plastid-bearing lineage without a plastid genome.
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