Phosphorus dynamics in and below the redoxcline in the Black Sea and implications for phosphorus burial

Dijkstra, N. D.; Kraal, Peter; Séguret, Marie J.M.; Flores, Moraes; González, Santiago Solís; Rijkenberg, Micha J.A.; Slomp, Caroline P.

doi:10.1016/j.gca.2017.11.016

Cited by 37 publications

(27 citation statements)

References 99 publications

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“…Only 10% of organic matter is remineralized in the anoxic basin of Lake Matano (52) (« C ∼90%), where sulfate concentrations are <30 μM (53). In contrast, in the anoxic but sulfate-rich Black Sea (15 to 20 mM sulfate concentration), 70% of organic matter is remineralized (e C ∼30%) (54,55). Lake Matano and the Black Sea are not perfect analogs for early and late Neoproterozoic oceans, but the sevenfold difference in remineralization rate is consistent with the overall greater availability of terminal electron acceptors in the Black Sea.…”

Section: Resultsmentioning

confidence: 99%

Ediacaran reorganization of the marine phosphorus cycle

Laakso

Sperling

Johnston

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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The Ediacaran Period (635 to 541 Ma) marks the global transition to a more productive biosphere, evidenced by increased availability of food and oxidants, the appearance of macroscopic animals, significant populations of eukaryotic phytoplankton, and the onset of massive phosphorite deposition. We propose this entire suite of changes results from an increase in the size of the deep-water marine phosphorus reservoir, associated with rising sulfate concentrations and increased remineralization of organic P by sulfate-reducing bacteria. Simple mass balance calculations, constrained by modern anoxic basins, suggest that deep-water phosphate concentrations may have increased by an order of magnitude without any increase in the rate of P input from the continents. Strikingly, despite a major shift in phosphorite deposition, a new compilation of the phosphorus content of Neoproterozoic and early Paleozoic shows little secular change in median values, supporting the view that changes in remineralization and not erosional P fluxes were the principal drivers of observed shifts in phosphorite accumulation. The trigger for these changes may have been transient Neoproterozoic weathering events whose biogeochemical consequences were sustained by a set of positive feedbacks, mediated by the oxygen and sulfur cycles, that led to permanent state change in biogeochemical cycling, primary production, and biological diversity by the end of the Ediacaran Period.

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Section: Resultsmentioning

confidence: 99%

Ediacaran reorganization of the marine phosphorus cycle

Laakso

Sperling

Johnston

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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“…The content of Mn in sediments is much lower than that of Al, Fe, and Ca, so the content of Mn-bonding PO 4 3is the lowest (Table S5). And Mn (IV) is easily changed into Mn (III) and/or Mn (II) under reductive conditions resulting in the disintegration of MnHPO 4 and the regeneration of PO 4 3− (Dijkstra et al 2017). Although PO 4…”

Section: Samplesmentioning

confidence: 99%

Effects of suspended particular matters, excess PO43-, and salinity on phosphorus speciation in coastal river sediments

Zhao

Sheng

Wang

et al. 2020

Environ Sci Pollut Res

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Phosphorus (P) is an essential biogenic element in aquatic ecosystem, and its speciation in sediment may influence the water quality. The composition of P in suspended particular matters (SPM) and sediments were analyzed. Metal ions bonding PO 4 3and chelating organic P (OP) were explored by Visual MINTEQ simulation and infrared spectroscopy. Inorganic P (IP) mainly comprises orthophosphate and pyrophosphate in SPM. OP mainly includes α-glycerol phosphate, β-Gly, monophosphate, and mononucleotides from aquatic plants in SPM. Cyclotella, Nitzschia, Amphiprore, and terrestrial C 3 plants are the main source of aquatic plants in JH, while they are from Oscillatoria and Merismopedia in JL. These aquatic plants directly determine whether OP or IP is taken to surface sediments during the setting of SPM. The bonding between PO 4 3− and Ca is more preferential than Al and Fe, so the excess PO 4 3− makes Ca compounds bonding IP (Ca-IP) and Al/Fe/Mn (hydr) oxides associated IP (Al/Fe/Mn-IP) dominant, but limited PO 4 3− preferentially contributes more Ca-IP. Metal ions in saline water can firmly cheat with OP via P-OH and/or P=O groups to promote the burial of OP.

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“…PolyP can also be released from acidocalcisomes of human platelets to modulate clotting and fibrinolysis ( Ruiz et al., 2004a ; Smith et al., 2006 ). Moreover, there is a growing realization of the importance of polyP with respect to cell physiology and biogeochemical cycling in marine ecosystems, as indicated by both large scale environmental analyses ( Diaz et al., 2008 ; Orchard et al., 2010 ; Martin et al., 2014 ; Diaz et al., 2016 ; Dijkstra et al., 2018 ; Martin et al., 2018 ) and laboratory studies ( Rhee, 1973 ; Jensen and Sicko-Goad, 1976 ; Jacobson et al., 1982 ; Orchard et al., 2010 ; Martin et al., 2014 ; Diaz et al., 2016 ). Even though the precise mechanisms by which polyP synthesis and accumulation impact cellular processes may sometimes be uncertain, it is clearly a functional giant with an impressive resume!…”

Section: Introduction a Brief Overview Of Polyphosphate Biologymentioning

confidence: 99%

Polyphosphate: A Multifunctional Metabolite in Cyanobacteria and Algae

2020

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Polyphosphate (polyP), a polymer of orthophosphate (PO 4 3-) of varying lengths, has been identified in all kingdoms of life. It can serve as a source of chemical bond energy (phosphoanhydride bond) that may have been used by biological systems prior to the evolution of ATP. Intracellular polyP is mainly stored as granules in specific vacuoles called acidocalcisomes, and its synthesis and accumulation appear to impact a myriad of cellular functions. It serves as a reservoir for inorganic PO 4 3and an energy source for fueling cellular metabolism, participates in maintaining adenylate and metal cation homeostasis, functions as a scaffold for sequestering cations, exhibits chaperone function, covalently binds to proteins to modify their activity, and enables normal acclimation of cells to stress conditions. PolyP also appears to have a role in symbiotic and parasitic associations, and in higher eukaryotes, low polyP levels seem to impact cancerous proliferation, apoptosis, procoagulant and proinflammatory responses and cause defects in TOR signaling. In this review, we discuss the metabolism, storage, and function of polyP in photosynthetic microbes, which mostly includes research on green algae and cyanobacteria. We focus on factors that impact polyP synthesis, specific enzymes required for its synthesis and degradation, sequestration of polyP in acidocalcisomes, its role in cellular energetics, acclimation processes, and metal homeostasis, and then transition to its potential applications for bioremediation and medical purposes.

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Phosphorus dynamics in and below the redoxcline in the Black Sea and implications for phosphorus burial

Cited by 37 publications

References 99 publications

Ediacaran reorganization of the marine phosphorus cycle

Ediacaran reorganization of the marine phosphorus cycle

Effects of suspended particular matters, excess PO43-, and salinity on phosphorus speciation in coastal river sediments

Polyphosphate: A Multifunctional Metabolite in Cyanobacteria and Algae

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