ArticlePloS one2018
A tale of two mixotrophic chrysophytes: Insights into the metabolisms of two Ochromonas species (Chrysophyceae) through a comparison of gene expression.
Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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30 citing papers in PubMed, 65 citations in OpenAlex.
- Linking Protistan Trophic Indicators to Phylogenetic Identity: From Single-Cell Grazing Evidence to Biogeographic Context.Molecular ecology · 2026Article
- Dynamic changes in protist community composition along a surface water-groundwater transect in the Danube wetland Lobau, Vienna, Austria.Frontiers in microbiology · 2026Article
- Photosynthetic and nutritional plasticity in mixotrophic dinoflagellates: responses to environmental change.Frontiers in plant science · 2026Review
- Nuclear genome assembly and annotation for the phagotrophic green alga Nephroselmis pyriformis.Journal of phycology · 2025Article
- Prolonged light exposure time enhances the photosynthetic investment in osmotrophicApplied and environmental microbiology · 2025Article
- Cellular heterogeneity in metabolism and associated microbiome of a non-model phytoflagellate.The ISME journal · 2025Article
- Variable responses to ocean acidification among mixotrophic protists with different lifestyles.ISME communications · 2025Article
- Latitude- and depth-driven divergence in protist trophic strategies revealed by a machine learning model.Frontiers in microbiology · 2025Article
- Proliferation of a bloom-forming phytoplankton via uptake of polyphosphate-accumulating bacteria under phosphate-limiting conditions.ISME communications · 2025Article
- Predicting optimal mixotrophic metabolic strategies in the global ocean.Science advances · 2024Article
- Integrated overview of stramenopile ecology, taxonomy, and heterotrophic origin.The ISME journal · 2024Review
- Metagenomic inference of microbial community composition and function in the weathering crust aquifer of a temperate glacier.Frontiers in microbiomes · 2024Article
- Transcriptomics reveal a unique phago-mixotrophic response to low nutrient concentrations in the prasinophyteISME communications · 2024Article
- Low rates of bacterivory enhances phototrophy and competitive advantage for mixoplankton growing in oligotrophic waters.Scientific reports · 2023Article
- Convergent evolution and horizontal gene transfer in Arctic Ocean microalgae.Life science alliance · 2023Article
- Transcriptional profile reveals the physiological responses to prey availability in the mixotrophic chrysophyteFrontiers in microbiology · 2023Article
- Evidence for evolutionary adaptation of mixotrophic nanoflagellates to warmer temperatures.Global change biology · 2022Article
- Broad phylogenetic and functional diversity among mixotrophic consumers of Prochlorococcus.The ISME journal · 2022Article
- The dynamic trophic architecture of open-ocean protist communities revealed through machine-guided metatranscriptomics.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Regulation of Phagotrophy by Prey, Low Nutrients, and Low Light in the Mixotrophic Haptophyte Isochrysis galbana.Microbial ecology · 2021Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ochromonas spp. strains CCMP1393 and BG-1 are phagotrophic phytoflagellates with different nutritional strategies. Strain CCMP1393 is an obligate phototroph while strain BG-1 readily grows in continuous darkness in the presence of bacterial prey. Growth and gene expression of strain CCMP1393 were investigated under conditions allowing phagotrophic, mixotrophic, or phototrophic nutrition. The availability of light and bacterial prey led to the differential expression of 42% or 45-59% of all genes, respectively. Data from strain CCMP1393 were compared to those from a study conducted previously on strain BG-1, and revealed notable differences in carbon and nitrogen metabolism between the 2 congeners under similar environmental conditions. Strain BG-1 utilized bacterial carbon and amino acids through glycolysis and the tricarboxylic acid cycle, while downregulating light harvesting and carbon fixation in the Calvin cycle when both light and bacteria were available. In contrast, the upregulation of genes related to photosynthesis, light harvesting, chlorophyll synthesis, and carbon fixation in the presence of light and prey for strain CCMP1393 implied that this species is more phototrophic than strain BG-1, and that phagotrophy may have enhanced phototrophy. Cellular chlorophyll a content was also significantly higher in strain CCMP1393 supplied with bacteria compared to those without prey. Our results thus point to very different physiological strategies for mixotrophic nutrition in these closely related chrysophyte species.
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