Solubility of amorphous calcium carbonate

Brečević, Ljerka; Nielsen, Arne E.

doi:10.1016/0022-0248(89)90168-1

Cited by 481 publications

(369 citation statements)

References 6 publications

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“…(2) Oyster larvae initially deposit amorphous calcium carbonate (ACC) in the larval shell that is then partially transformed to aragonite (Carriker & Palmer 1979, Weiss et al 2002, in contrast to adult oyster shells that are predominantly composed of calcite (Stenzel 1964). The K* sp of ACC is larger than that of aragonite and therefore more soluble (Bre<ević & Nielsen 1989). (3) Michaelidis et al (2005) suggested that dissolution of CaCO 3 shells as a result of extracellular acidosis occurs in adult mussels Mytilus galloprovincialis reared in high pCO 2 seawater.…”

Section: Discussionmentioning

confidence: 99%

Effects of increased seawater pCO2 on early development of the oyster Crassostrea gigas

Kurihara¹,

Kato²,

Ishimatsu³

2007

Aquat. Biol.

288

214

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This study demonstrated that the increased partial pressure of CO 2 (pCO 2 ) in seawater and the attendant acidification that are projected to occur by the year 2300 will severely impact the early development of the oyster Crassostrea gigas. Eggs of the oyster were artificially fertilized and incubated for 48 h in seawater acidified to pH 7.4 by equilibrating it with CO 2 -enriched air (CO 2 group), and the larval morphology and degree of shell mineralization were compared with the control treatment (air-equilibrated seawater). Only 5% of the CO 2 group developed into normal 'Dshaped' veliger larvae as compared with 68% in the control group, although no difference was observed between the groups up to the trochophore stage. Thus, during embryogenesis, the calcification process appears to be particularly affected by low pH and/or the low CaCO 3 saturation state of high-CO 2 seawater. Veliger larvae with fully mineralized shells accounted for 30% of the CO 2 -group larvae, compared with 72% in the control (p < 0.005). Shell mineralization was completely inhibited in 45% of the CO 2 -group larvae, but only in 16% of the control (p < 0.05). Normal D-shaped veligers of the control group exhibited increased shell length and height between 24 and 48 h after fertilization, while the few D-shaped veligers of the CO 2 group showed no shell growth during the same period. Our results suggest that future ocean acidification will have deleterious impacts on the early development of marine benthic calcifying organisms.

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Section: Discussionmentioning

confidence: 99%

Effects of increased seawater pCO2 on early development of the oyster Crassostrea gigas

Kurihara¹,

Kato²,

Ishimatsu³

2007

Aquat. Biol.

288

214

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“…The thin amorphous layer that is surrounding the crystals thus could be either the dissolution product of the calcite surface (29) or a precursor phase in the path of crystallization of calcite (see, e.g., ref. 35). The stabilization of such an amorphous phase can be achieved in the presence of specialized additives such as glycoproteins, for example, as shown by Aizenberg et al (34).…”

Section: Discussion Relationships Between Calcite Precipitates and Pymentioning

confidence: 99%

Nanobacteria-like calcite single crystals at the surface of the Tataouine meteorite

Benzerara

Menguy

Guyot

et al. 2003

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

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Nanobacteria-like objects evidenced at the surface of the orthopyroxenes of the Tataouine meteorite in South Tunisia have been studied by scanning and transmission electron microscopies. A method of micromanipulation has been developed to ensure that exactly the same objects were studied by both methods. We have shown that the nanobacteria-like objects are spatially correlated with filaments of microorganisms that colonized the surface of the meteoritic pyroxene during its 70 years of residence in the aridic Tataouine soil. Depressions of a few micrometers in depth are observed in the pyroxene below the carbonates, indicating preferential dissolution of the pyroxene and calcite precipitation at these locations. The nanobacteria-like small rods that constitute calcium carbonate rosettes are well crystallized calcite single crystals surrounded by a thin amorphous layer of carbonate composition that smoothes the crystal edges and induces rounded shapes. Those morphologies are unusual for calcite single crystals observed in natural samples. A survey of recent literature suggests that the intervention of organic compounds derived from biological activity is likely in their formation.

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“…ACC is highly unstable in vitro [11,12]. The discovery that echinoderm larvae form their skeleton through an amorphous precursor phase was followed by a series of studies which showed that echinoderm adults also adopt the same strategy [13], as do larval mollusks [14,15] and mature mollusks [16].…”

Section: Historical Perspectivementioning

confidence: 99%

Transient precursor amorphous phases in biomineralization.In the footsteps of Heinz A. Lowenstam

Addadi¹,

Vidavsky²,

Weiner³

2012

Zeitschrift Für Kristallographie - Crystalline Materials

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Abstract. Heinz A. Lowenstam's discovery in 1967, together with Ken Towe that the magnetite mineral in mature chiton teeth forms from a disordered transient precursor phase, ferrihydrite, remained an isolated curiosity for 30 years. During the last 15 years, many more examples were found in both invertebrates and vertebrates, where the mature crystalline mineral phase is formed through a transient amorphous precursor phase. Here we review this widespread phenomenon, and also describe the details of the transformation process in the formation of the calcitic spicules of the sea urchin larva. We identify many open questions.

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Solubility of amorphous calcium carbonate

Cited by 481 publications

References 6 publications

Effects of increased seawater pCO2 on early development of the oyster Crassostrea gigas

Effects of increased seawater pCO2 on early development of the oyster Crassostrea gigas

Nanobacteria-like calcite single crystals at the surface of the Tataouine meteorite

Transient precursor amorphous phases in biomineralization.In the footsteps of Heinz A. Lowenstam

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