The Metabolism of Glucose by the Alga Ochromonas malhamensis.

Reazin, George H.

doi:10.1104/pp.31.4.299

Cited by 17 publications

(1 citation statement)

References 13 publications

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“…Our experiments support these results; however, DOM may contain additional nutrients that support osmotrophic growth; therefore, we tested glucose and glycerol as defined organic carbon sources. Osmotrophic dissimilation of glucose by P. malhamensis has been demonstrated within 1 to 2 d after transfer to an inorganic medium (Reazin 1956). In our experiments, only poor growth was observed with glucose (μ = 0.12 ± 0.05 d −1 ) or glycerol (μ = 0.09 ± 0.02 d −1 ) as a carbon source under axenic conditions (Fig.…”

Section: Influence Of Dissolved Organic Mattermentioning

confidence: 99%

Influence of nutrients and light on autotrophic, mixotrophic and heterotrophic freshwater chrysophytes

Rottberger¹,

Gruber²,

Boenigk³

et al. 2013

Aquat. Microb. Ecol.

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Chrysophyte algae show wide variation in their nutritional modes, which can be especially advantageous in oligotrophic conditions. However, the capacities and strategies of the algae to adapt to changing conditions may vary due to different nutritional requirements of individual species. In this context, comparative analyses evaluating the physiological range of mixotrophic chrysophytes are important to predict possible changes in phytoplankton composition. We compared 4 freshwater chrysophytes-Poteriospumella lacustris, Poterioochromonas malhamensis, Dinobryon divergens and Mallomonas annulata-under different growth conditions. The diatom Phaeodactylum tricornutum served as a photoautotrophic reference strain. We demonstrate active growth of P. lacustris and the mixotrophic P. malhamensis under chemoheterotrophic conditions. Neither of the chrysophytes were growing photoautotrophically; however, P. malhamensis showed some photosynthetic activity and survived longer when kept in the light. M. annulata, P. tricornutum and the mixotrophic D. divergens showed light-limited growth when kept in inorganic media. Even though D. divergens consumed living bacteria, it did not grow in the dark in the presence of the bacteria only. We detected large differences in the general nutritional preferences between the 2 mixotrophs in relation to the nutritional features of all investigated strains.

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Section: Influence Of Dissolved Organic Mattermentioning

confidence: 99%

Influence of nutrients and light on autotrophic, mixotrophic and heterotrophic freshwater chrysophytes

Rottberger¹,

Gruber²,

Boenigk³

et al. 2013

Aquat. Microb. Ecol.

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Enzymic Aspects of Photosynthesis

Vishniac

Horecker²,

Ochoa³

1957

Advances in Enzymology - And Related Areas of Molecular Biology

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Studies on Scenedesmus acutus growth. I effect of autotrophic and mixotrophic conditions on the growth of Scenedesmus acutus

Shamala

Drawert

Leupold

1982

Biotech & Bioengineering

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Among sugars, glucose and mannose were found to be the most suitable substrates for mixotrophic growth, uptake of galactose and its influence on growth was negligible, and sucrose and fructose occupied intermediary positions. The optimum temperature for sugar uptake was 30 degrees C, both under light and in darkness. Enhancement in the photosynthetic oxygen-evolution rate, based on the utilization of substrates, was foremost in the presence of glucose, followed by mannose, sucrose, and fructose. Industrial by-products such as sugarcane molasses also were utilized to increase the algal growth under mixotrophic conditions. A maximum yield in biomass was obtained subsequent to the combined supply of sugarcane molasses with carbon dioxide to indoor as well as outdoor mixotrophic cultures. Doubling the carbon dioxide supply alone above a certain level, under autotrophic and mixotrophic outdoor conditions, did not produce a pronounced increase in the algal growth rate. The results on autotrophic and mixotrophic growth variations are discussed in the article.

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The Metabolism of Glucose by the Alga Ochromonas malhamensis.

Cited by 17 publications

References 13 publications

Influence of nutrients and light on autotrophic, mixotrophic and heterotrophic freshwater chrysophytes

Influence of nutrients and light on autotrophic, mixotrophic and heterotrophic freshwater chrysophytes

Enzymic Aspects of Photosynthesis

Studies on Scenedesmus acutus growth. I effect of autotrophic and mixotrophic conditions on the growth of Scenedesmus acutus

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