Phosphate Metabolism in Blue-green Algae

Jensen, Thomas E.; Sicko-Goad, Linda; Ayala, Robert P.

doi:10.1508/cytologia.42.357

Cited by 22 publications

(9 citation statements)

References 22 publications

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“…The investigated phytoplankton populations might have accumulated phosphate, and stored surplus cell phosphorus as polyphosphate (JENSEN and SICKO, 1974;AUER etal., in press). …”

Section: Resultsmentioning

confidence: 99%

Phosphate uptake capacity of summer phytoplankton of the Loosdrecht Lakes in relation to phosphorus loading and irradiance

Sweerts¹,

Gons²,

Rijkeboer³

1986

Hydrobiological Bulletin

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Summer populations of the phytoplankton of the Loosclrecht Lakes were enclosed in laboratory scale enclosures (LSE), supplied with 7.5/~g P.l-l.d -1 and 105/lg P.l-l.d-1, respectively. The maximum initial phosphate uptake rate (V m) was related to irradiance and primary production. At phosphate uptake saturating light-irradiance V m values up to 4 times the V m values in the dark were measured.The phosphate uptake capacity per unit dry weight remained more or less constant throughout the experiments in the LSE receiving the lower amount of phosphorus, and declined in the LSE receiving the higher amount of phosphorus. Within the range of V m values measured (< 10/~g P.mg DW--I.h-1 or 1,3/~g P./zg chl~ -l.h -1), the growth rate of the phytoplankton was not influenced by alterations in phosphorus availability.

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“…The investigated phytoplankton populations might have accumulated phosphate, and stored surplus cell phosphorus as polyphosphate (JENSEN and SICKO, 1974;AUER etal., in press). …”

Section: Resultsmentioning

confidence: 99%

Phosphate uptake capacity of summer phytoplankton of the Loosdrecht Lakes in relation to phosphorus loading and irradiance

Sweerts¹,

Gons²,

Rijkeboer³

1986

Hydrobiological Bulletin

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“…Similarly, elevated polyP:TPP values were observed in the lag phase (Figs B, B and B). The rapid accumulation of polyP in the lag phase likely demonstrates the ‘polyphosphate overplus’ mechanism (Jensen and Sicko‐Goad, ), which describes a rapid uptake of excess phosphate from the ambient environments by organisms to support a restoration of phosphorus supply following phosphate limitation (Jensen and Sicko‐Goad, ; Jacobson and Halmann, ; Werner et al, ; Martin et al, ). The cells in the lag phase were old.…”

Section: Discussionmentioning

confidence: 99%

“…PolyP metabolisms are also physiologically related to cell functions such as cell division (Rhee, ; Jensen and Sicko‐Goad, ; Rao et al, ). This can explain the dramatic decrease of polyP: cell, as cell growth entered exponential phase (Figs , after 7, 9 and 9 days respectively).…”

Section: Discussionmentioning

confidence: 99%

“…However, the controls of polyP variability were not entirely clear. Much of the recent works on aquatic polyphosphate were large‐scale environmental studies (Diaz et al, ; ; Orchard et al, ; Martin et al, ; ), and detailed laboratory studies for polyP dynamics under amended P levels (P replete vs. P deplete) are needed but highly scarce, with only a few laboratory incubations studies available (Rhee, ; Jensen and Sicko‐Goad, ; Jacobson and Halmann, ; Orchard et al, ; Martin et al, ; Diaz et al, ). Lack of data for statistical analyses and differences in quantification methods complicate the comparsion the results of different studies.…”

Section: Introductionmentioning

confidence: 99%

“…The dynamic processes of polyP under nutritional stringencies have led to growing attentions on polyP in aquatic microorganisms, including cyanobacteria (Jensen and Sicko‐Goad, ; Grillo and Gibson, ; Bolier et al, ; Gomez‐Garcia et al, ; ). Cyanobacteria, particularly the small‐size picocyanobacteria (typically smaller than 2 μm), are important aquatic primary producers in both marine and freshwater environments (Waterbury et al, ; Weisse, ; Śliwińska‐Wilczewska et al, ), and may contribute to bloom formation and the release of toxins (Jasser and Callieri, ; Śliwińska‐Wilczewska et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Dynamic polyphosphate metabolism in cyanobacteria responding to phosphorus availability

Dittrich

2018

Environmental Microbiology

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Summary Despite the crucial role of polyphosphate (polyP) in aquatic environments, its metabolism in cyanobacteria responding to nutrients is poorly understood. We investigate polyP in three cyanobacteria species, specifically unicellular picocyanobacteria, under various nutritional conditions. Our experiments show that the accumulation of polyP in cyanobacteria is strongly dynamic, depending on phosphate levels and growth stages. ‘Overplus’ uptake of phosphorus (P) during the lag phase leads to the rapid accumulation of polyP, followed by lower polyP quotas during the exponential growth stage as a result of competing ‘luxury’ P uptake and polyP utilization to support rapid cell division. Cyanobacteria are capable of P deficiency responses that preferentially maintain polyP. However, preferential utilization of polyP occurs under severe P stress, suggesting the crucial role of polyP as P reserve to support cellular survival. Strong variability was observed among different species of cyanobacteria in their ability to accumulate polyP, and likely in the threshold P levels at which preferential polyP degradation occurs. This suggests that some cyanobacteria may be more adaptive to P‐stressed or P‐fluctuating conditions. Our results explain and provide important insights into the variability of polyP observed in aquatic environments where picocyanobacteria are the dominant primary producers.

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Accumulation of lead byAnabaena cylindrica : Mathematical modeling and an energy dispersive X-ray study

Swift

Forciniti²

1997

Biotechnol. Bioeng.

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Phosphate Metabolism in Blue-green Algae

Cited by 22 publications

References 22 publications

Phosphate uptake capacity of summer phytoplankton of the Loosdrecht Lakes in relation to phosphorus loading and irradiance

Phosphate uptake capacity of summer phytoplankton of the Loosdrecht Lakes in relation to phosphorus loading and irradiance

Dynamic polyphosphate metabolism in cyanobacteria responding to phosphorus availability

Accumulation of lead byAnabaena cylindrica : Mathematical modeling and an energy dispersive X-ray study

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