Role of Phosphorus in Photosynthetic Carbon Metabolism

Rychter, Anna M.; Rao, Idupulapati M.

doi:10.1201/9781420027877.ch7

Cited by 66 publications

(69 citation statements)

References 63 publications

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“…The subsequent recovery of F v /F m and other metabolic activity might be ascribed to the synthesis of polyphosphate from the free phosphate and the transportation of surplus-free phosphate to the vacuole. Polyphosphate and vacuole have been reported to act as phosphate reserve for the cytosol in microalgae and higher plants (Nishikawa et al 2006;Rychter and Rao 2005). These regulations render cells to successfully acclimate to high-phosphorus environment.…”

Section: Discussionmentioning

confidence: 99%

Characterization of cell growth and starch production in the marine green microalga Tetraselmis subcordiformis under extracellular phosphorus-deprived and sequentially phosphorus-replete conditions

Yao

Cao

et al. 2013

Appl Microbiol Biotechnol

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Microalgal starch is a potential feedstock for biofuel production. Nutrient stress is widely used to stimulate starch accumulation in microalgae. Cell growth and starch accumulation in the marine green microalga Tetraselmis subcordiformis were evaluated under extracellular phosphorus deprivation with initial cell densities (ICD) of 1.5, 3.0, 6.0, and 9.0×10 6 cells mL were all obtained in the culture with the ICD of 3.0× 10 6 cells mL −1 . Appropriate ICD could be used to regulate the intracellular phosphorus concentration and maintain adequate photosynthetic activity to achieve the highest starch productivity, along with biomass and starch concentration. The recovery of phosphorus-deprived T. subcordiformis in medium containing 0.5, 1.0, or 6.0 mM KH 2 PO 4 was also tested. Cell growth and starch accumulation ability could be recovered completely. A phosphorus pool in T. subcordiformis was shown to manipulate its metabolic activity under different environmental phosphorus availability. Though lower starch productivity and starch content were achieved under phosphorus deprivation compared with nitrogen-or sulfur-deprived conditions, the higher biomass and starch concentration make T. subcordiformis a good candidate for biomass and starch production under extracellular phosphorus deprivation.

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Section: Discussionmentioning

confidence: 99%

Characterization of cell growth and starch production in the marine green microalga Tetraselmis subcordiformis under extracellular phosphorus-deprived and sequentially phosphorus-replete conditions

Yao

Cao

et al. 2013

Appl Microbiol Biotechnol

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“…Phosphate deficiency may either decrease photosynthesis or respiration rate or has no effect on these processes, but alterations in carbon partitioning into starch or sucrose and assimilate transport were often observed (Ciereszko et al 1996Rychter and Rao 2005;Hermans et al 2006). The Pi deficiency-dependent promotions of several reactions in the respiratory carbon metabolism or in photorespiration (and other pathways) were observed (Rychter and Rao 2005); many reactions might require a high activity of specific phosphatases to hydrolyze different phosphorylated substrates (e.g.…”

Section: Ciereszko (And) á E _mentioning

confidence: 99%

“…Phosphorus is well known as an essential nutrient important in many processes like photosynthesis, respiration, regulation of enzymes activity and gene expression or signal transduction (Raghothama 1999;Rychter and Rao 2005;Calderon-Vazquez et al 2008;Nilsson et al 2010;Yao et al 2011). Phosphate deficiency is a common stress condition experienced in many different environments.…”

Section: Introductionmentioning

confidence: 99%

Acid phosphatases and growth of barley (Hordeum vulgare L.) cultivars under diverse phosphorus nutrition

2011

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The morphological and physiological responses of barley to moderate Pi deficiency and the ability of barley to grow on phytate were investigated. Barley cultivars (Hordeum vulgare L., Promyk, Skald and Stratus) were grown for 1-3 weeks on different nutrient media with contrasting phosphorus source: KH 2 PO 4 (control), phytic acid (PA) and without phosphate (-P). The growth on -P medium strongly decreased Pi concentration in the tissues; culture on PA medium generally had no effect on Pi level.

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“…A possible explanation of this effect is increased P concentration and/or increased sink capacity of AMI plants compared to AMF plants grown in low P treatment. Under P-limited conditions the production of assimilates is limited (Rychter and Rao 2005), and this could cause feedback limitation of light reactions. Hence, Quick and Mills (1988) stated that inorganic phosphate (Pi) incorporated in the sugar phosphate end-products of photosynthesis needs to be recycled in order to sustain photophosphorylation.…”

Section: Am Fungal Colonization and Root Traitsmentioning

confidence: 99%

Arbuscular mycorrhizae modify winter wheat root morphology and alleviate phosphorus deficit stress

Lazarević¹,

Lošák²,

Manschadi³

2018

PLANT SOIL ENVIRON

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Lazarević B., Lošák T., Manschadi A.M. (2018): Arbuscular mycorrhizae modify winter wheat root morphology and alleviate phosphorus deficit stress. Plant Soil Environ., 64: 47-52.Arbuscular mycorrhizal (AM) root colonization is known to have beneficial effects on plant growth especially under phosphorus (P) deficit conditions. The objectives of present study were: (i) to quantify changes in early wheat root development of AM-inoculated (AMI) and AM-free (AMF) roots under limited P availability; (ii) to assess possible mitigating effect of AM inoculation on photochemical efficiency under P deficit stress. AMI (inoculated with Rhizophagus irregularis) and AMF wheat plants were grown for 20 days in low (1 μmol/L) and high (50 μmol/L) P treatments. AM inoculation affected root morphology and shoot P concentration in low P treatment. AM inoculation alleviated reduction of the total root length in low P treatment, mainly due to an increase of fine roots length (< 0.5 mm). Contrastingly, shoot dry weight was reduced by AM inoculation in low P treatment. P deficiency decreased photochemical efficiency of wheat plants. However, due to increased sink capacity and facilitated nutrient concentrations AM inoculation alleviates phosphorus deficit stress and increased photochemical efficiency.

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Role of Phosphorus in Photosynthetic Carbon Metabolism

Cited by 66 publications

References 63 publications

Characterization of cell growth and starch production in the marine green microalga Tetraselmis subcordiformis under extracellular phosphorus-deprived and sequentially phosphorus-replete conditions

Characterization of cell growth and starch production in the marine green microalga Tetraselmis subcordiformis under extracellular phosphorus-deprived and sequentially phosphorus-replete conditions

Acid phosphatases and growth of barley (Hordeum vulgare L.) cultivars under diverse phosphorus nutrition

Arbuscular mycorrhizae modify winter wheat root morphology and alleviate phosphorus deficit stress

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