Energy–Dependent Bacterivory in Ochromonas minima–A Strategy Promoting the Use of Substitutable Resources and Survival at Insufficient Light Supply

Flöder, Sabine; Hansen, Thomas; Ptáčník, Robert

doi:10.1016/j.protis.2006.05.002

Cited by 22 publications

(22 citation statements)

References 42 publications

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“…This also suggests that the growth of this alga depends on the mixotrophic nutrition in environments with low nitrogen and phosphorus concentrations. This assertion, although requiring confirmation by means of experimental assessments, supports the idea that phagotrophy is a way to supplement nutrients when these are limiting (Nygaard & Tobiesen 1993, Rothhaupt 1996a, Flöder et al 2006, Carvalho & Granéli 2010. Vähätalo et al (2011) proposed that Pseudopedinella is capable of growing autotrophically but grazes on bacteria under nutrient limiting conditions.…”

Section: Discussionmentioning

confidence: 59%

Presence, abundance and bacterivory of the mixotrophic algae Pseudopedinella (Dictyochophyceae) in freshwater environments

Gerea¹,

Saad²,

Izaguirre³

et al. 2016

Aquat. Microb. Ecol.

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Section: Discussionmentioning

confidence: 59%

Presence, abundance and bacterivory of the mixotrophic algae Pseudopedinella (Dictyochophyceae) in freshwater environments

Gerea¹,

Saad²,

Izaguirre³

et al. 2016

Aquat. Microb. Ecol.

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“…Ochromonas minima is able to ingest bacteria as well as photosynthetic pico‐plankton. However, O. minima , unlike some other Ochromonas strains (Rothhaupt ), is unable to grow in the dark, even if particulate food is available (Flöder et al , Fischer et al unpubl.). Cafeteria roenbergensis (strain HFCC 33, Univ.…”

Section: Methodsmentioning

confidence: 99%

Importance of mixotrophic bacterivory can be predicted by light and loss rates

Fischer

Giebel

Hillebrand

et al. 2016

Oikos

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Recent observational studies form oligotrophic waters provide ample evidence that mixotrophic flagellates often account for the bulk of bacterivory. However, we lack a general framework that allows a mechanistic understanding of success of mixotrophs in the competition with heterotrophic bacterivores. This is especially needed for integrating mixotrophy in models of the microbial loop. Based on general tradeoffs linked to the combined resource use in mixotrophs (generalist versus specialist), we propose a concept where mixotrophs are favored by conditions of high light – low losses, corresponding to the situation found in the surface waters of oligotrophic oceans. Under such conditions, they can achieve positive net growth at very low resource levels, allowing simultaneous competition with specialized protists. Conversely, heterotrophic bacterivores and photoautotrophs should be especially favored in more productive and low‐light conditions. We show experimentally that the combined effect of light and loss rates (dilution) predicts the success of mixotrophic bacterivorous flagellates. Moreover, our results suggest that total bacterivory, contrary as seen in the traditional microbial loop concept, has a more intricate coupling to light.

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“…To our knowledge, only few microalgae are mixotrophic. Freshwater flagellate Haematococcus pluvialis (Margalith 1999), C. protothecoides (Yang et al 2000), and Ochromonas minima (Flöder et al 2006) are examples. Nannochloropsis sp.…”

Section: Dry Weight (G/l)mentioning

confidence: 99%

Biomass and lipid productivities of Chlorella vulgaris under autotrophic, heterotrophic and mixotrophic growth conditions

2009

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Biomass and lipid productivities of Chlorella vulgaris under different growth conditions were investigated. While autotrophic growth did provide higher cellular lipid content (38%), the lipid productivity was much lower compared with those from heterotrophic growth with acetate, glucose, or glycerol. Optimal cell growth (2 g l(-1)) and lipid productivity (54 mg l(-1) day(-1)) were attained using glucose at 1% (w/v) whereas higher concentrations were inhibitory. Growth of C. vulgaris on glycerol had a similar dose effects as those from glucose. Overall, C. vulgaris is mixotrophic.

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Energy–Dependent Bacterivory in Ochromonas minima–A Strategy Promoting the Use of Substitutable Resources and Survival at Insufficient Light Supply

Cited by 22 publications

References 42 publications

Presence, abundance and bacterivory of the mixotrophic algae Pseudopedinella (Dictyochophyceae) in freshwater environments

Presence, abundance and bacterivory of the mixotrophic algae Pseudopedinella (Dictyochophyceae) in freshwater environments

Importance of mixotrophic bacterivory can be predicted by light and loss rates

Biomass and lipid productivities of Chlorella vulgaris under autotrophic, heterotrophic and mixotrophic growth conditions

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