ArticleEnvironmental microbiology reports2022
Light-dependent niche differentiation in two mixotrophic bacterivores.
Article in Environmental microbiology reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Dissolved Organic Carbon Regulates Bacterial Ingestion by Tetraselmis sp.Microbial ecology · 2026Article
- Salinity Negatively Impacts Protistan and Fungal Community Stability and Shapes Assembly Processes in Freshwater Ecosystems.Environmental microbiology reports · 2025Article
- Top-down structuring of freshwater bacterial communities by mixotrophic flagellates.ISME communications · 2023Article
- Low rates of bacterivory enhances phototrophy and competitive advantage for mixoplankton growing in oligotrophic waters.Scientific reports · 2023Article
- Trophic strategies explain the ocean niches of small eukaryotic phytoplankton.Proceedings. Biological sciences · 2023Article
- Mixoplankton and mixotrophy: future research priorities.Journal of plankton researchReview
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Mixotrophy usually is considered with respect to the advantages gained and the associated trade-offs of this form of nutrition, compared to specialized competitors, strict photoautotrophs and heterotrophs. However, we currently have an incomplete understanding of the functional diversity of mixotrophs and the factors controlling niche differentiation in different mixotrophic species. Here we experimentally studied the light-dependent niche differentiation in two chrysophyte species. We show that the newly isolated Ochromonas sp. is an obligate phototroph and possibly an obligate mixotroph. In contrast, Poterioochromonas malhamensis is a facultative mixotroph; photosynthesis and heterotrophy in this species represent substitutable routes of resource acquisition. We further hypothesize that the variable plasticity in the considered traits of the here tested species may result in different niche differentiation with regard to a vertical light gradient. Ochromonas sp. should perform better in stable stratified surface water layers, where light is available, but prey abundances might be low. However, P. malhamensis should be able to also successfully grow in deeper water layers, benefiting from higher bacterial production. This study represents a first step towards understanding competition between mixotrophs engaging in different physiological strategies, and consequently their potential co-occurrence due to niche differentiation.
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