Effect of selenate on growth and photosynthesis of Chlamydomonas reinhardtii

Geoffroy, Laure; Gilbin, Rodolphe; Simon, Olivier; Floriani, Magali; Adam, Christelle; Pradines, Catherine; Cournac, Laurent; Garnier‐Laplace, Jacqueline

doi:10.1016/j.aquatox.2007.04.001

Cited by 95 publications

(55 citation statements)

References 44 publications

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“…Selenium toxicity is attributed to its similarity to sulfur as Se replaces sulfur in amino acids and can change protein folding, causing reduced growth and deformities (Daniels, 1996;Lemly, 1997;Sors et al, 2005). This sulfur substitution also seemed to occur in the photosynthetic apparatus, inducing a loss in PSII efficiency which could explain the observed growth inhibition (Geoffroy et al, 2007). Both the reduction in chlorophyll index and fluorescence parameters indicate that the light reactions of photosynthesis are negatively influenced by Se.…”

Section: Discussionmentioning

confidence: 95%

Use of selenium fertilizers for production of Se‐enriched Kenaf (Hibiscus cannabinus): Effect on Se concentration and plant productivity

Lavu

Schepper

Steppe

et al. 2013

Z. Pflanzenernähr. Bodenk.

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Due to selenium (Se) deficiency, Se fortification of food and feed is applied in many countries. Therefore, potential use of Se-enriched kenaf was investigated based on its Se accumulation, its potential to transform accumulated Se to other Se species, and effect of Se accumulation on its growth. Kenaf was grown with different levels of two Se fertilizers (selenite and selenate) at concentrations ranging from 0 to 4 mg Se (kg soil) -1 . Total Se concentrations in the plants grown on selenate-treated soil amounted to (1019 ± 136) mg Se (kg dry weight) -1 and were much higher compared to plants grown on selenite-treated soil. Identified Se species were selenite, selenate, Se-methionine, and Se-cystine. Biomass yield, net photosynthesis, and chlorophyll index of the plants decreased when plants were grown on soils treated with high doses of selenate.

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Section: Discussionmentioning

confidence: 95%

Use of selenium fertilizers for production of Se‐enriched Kenaf (Hibiscus cannabinus): Effect on Se concentration and plant productivity

Lavu

Schepper

Steppe

et al. 2013

Z. Pflanzenernähr. Bodenk.

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“…The three ILs significantly damaged the structures of the chloroplasts and thylakoids, suggesting that the functions of the chloroplasts could be affected by the three ILs to some degree. This is probably because the external stress leads to a decrease in the photosynthetic pigment content (Geoffroy et al, 2007). There is no significant difference among the three treatments in terms of the damage to chloroplasts.…”

Section: Effects Of Ils On Chloroplast Ultrastructurementioning

confidence: 97%

Effects of imidazolium chloride ionic liquids and their toxicity to Scenedesmus obliquus

Liu

Zhang

Chen

et al. 2015

Ecotoxicology and Environmental Safety

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“…Indeed all treatments that in some way inhibit these processes led to the accumulation of reserves (mostly in the form of starch). Examples include the effects of FdUrd, cycloheximide, sublethal temperature or high light intensities described in sections above, the effects of benzopyrene (Abarzua et al, 1985), and high concentration of selenium compounds (Geoffroy et al, 2007;Vítová et al, 2011a).…”

mentioning

confidence: 98%

Accumulation of energy reserves in algae: From cell cycles to biotechnological applications

Vítová

Bišová

Kawano

et al. 2015

Biotechnology Advances

212

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Starch and lipids are key components of algal cells and responsible for buffering variable supplies of energy and carbon that are vital for cell growth and reproduction, particularly DNA replication, nuclear and cellular division. The basic characteristics of energy reserves, their ultrastructure and localization inside the cell, regulation of their synthesis in relation to cell cycle phases, and their control by external factors, including light intensity, temperature, and carbon dioxide are described. Over the last two decades, research in this field has been boosted by possible biotechnological applications of algae for the production of biofuels from energy conserving compounds (bioethanol from starch and biodiesel from lipids). Recent findings on mechanisms that lead to an accumulation of exceptionally high levels of starch and lipids in algae will be summarized in this review. Macroelement (N, S, P) limitation, or depletion in mineral medium, as the most widely used approaches for enhancing both starch and lipid accumulation, are reviewed in detail. Potential biotechnological strategies for the economically viable overproduction of lipid and starch, such as a two-step procedure exploiting the effects of nutrient limitation and depletion, as well as the means and rationale for selecting appropriate strains, are discussed.

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Effect of selenate on growth and photosynthesis of Chlamydomonas reinhardtii

Cited by 95 publications

References 44 publications

Use of selenium fertilizers for production of Se‐enriched Kenaf (Hibiscus cannabinus): Effect on Se concentration and plant productivity

Use of selenium fertilizers for production of Se‐enriched Kenaf (Hibiscus cannabinus): Effect on Se concentration and plant productivity

Effects of imidazolium chloride ionic liquids and their toxicity to Scenedesmus obliquus

Accumulation of energy reserves in algae: From cell cycles to biotechnological applications

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