The mitigating effect of calcification-dependent of utilization of inorganic carbon of Chara vulgaris Linn on NH4-N toxicity

Wang, Heyun; Ni, Leyi; Xie, Ping

doi:10.1016/j.chemosphere.2013.04.100

Cited by 12 publications

(17 citation statements)

References 46 publications

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“…Our finding that there is a significant decrease in the pH of the solution in response to additional HCO 3 − is in line with the findings of the pH-drift experiments. This is also supported by the finding that external HCO 3 − inhibited the increase in solution pH by increasing calcification of calcareous plants, as reported by Wang et al (2013).…”

Section: Dependence Of Calcification On the Utilization Of Dicsupporting

confidence: 78%

“…Although a similar result has been reported in a coccolithophorid, the level of interaction between photosynthesis and calcification was taxondependent (Nimer & Merrett 1992). We reported that a high competition for DIC between photosynthesis and calcification exists in Chara thalli (Wang et al 2013), whereas no such competition was found in Stylo phora pistillata microcolonies (McConnaughey & Falk 1991, Furla et al 2000. In the present study, the utilization of DIC resulted from photosynthesis and calcification of plants.…”

Section: Dependence Of Calcification On the Utilization Of Dicmentioning

confidence: 48%

“…We speculate that the high dependence of calcification on the utilization of DIC in Chara thalli was primarily related to the ratio of calcification to photosynthesis (C:P). A consequence of this is that any increase or decrease in the C:P ratio by HCO 3 − addition causes a corresponding change in the calcification to DIC utilization ratio (Wang et al 2013). According to our results, high light intensity and increased HCO 3 -likely affect the ratio of calcification to the utilization of DIC by affecting the C:P ratio.…”

Section: Dependence Of Calcification On the Utilization Of Dicmentioning

confidence: 99%

“…Therefore, in the trans-calcification model, calcification does not require light, and calcification functions as a proton generator. Since the 1990s, many studies have demonstrated the beneficial effects for macrophytes from proton generation by calcification and how this is related to bicarbonate utilization (McConnaughey 1991, McConnaughey & Falk 1991, nutrient assimilation (McConnaughey & Whelan 1997, Siong & Asaeda 2006, 2009b, Gomes & Asaeda 2010, Wang et al 2013, and hyper-accumulation of heavy metals (McConnaughey 1991, Siong & Asaeda 2009a). Furthermore, Wang et al (2013) demonstrated that calcification could mitigate the toxic effects of high NH 4 -N on calcareous Chara plants.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Significance of HCO3- alkalinity in calcification and utilization of dissolved inorganic carbon in Chara vulgaris

Wang¹,

Ni²,

Yu³

2017

Aquat. Biol.

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To investigate the influence of HCO 3 − alkalinity on calcification in thalli of the genus Chara, we studied the effects of increased light level and additional HCO 3 − on calcification rate in C. vulgaris at various hours (30 min, 8 h, 12 h, 12.5 h, 20 h and 24 h after treatment) in a 24 h experiment (12 h light:12 h dark). We identified a significant Pearson's correlation between exogenous dissolved inorganic carbon (DIC) concentrations and the utilization of DIC (µmol C g −1 fresh weight). Plotting the daily rhythm of DIC utilization produced negative quadratic curves. Furthermore, calcification rate (µmol Ca h −1 g −1) was linearly related to DIC utilization rate (DIC uptake ; µmol C h −1 g −1 ), indicating that the calcification rate is dependent on DIC uptake . However, ratios of calcification to the utilization of DIC were decreased at high light intensity and increased with HCO 3 − addition, which was mainly ascribed to changes in the ratio of calcification to photosynthesis. Chlorophyll fluorescence results provided direct evidence for the promotion of photosynthesis in Chara thalli by both high light and DIC addition and their positive influence on maximum relative electron transport rate. These results suggest that calcification in calcareous C. vulgaris is mainly restrained by HCO 3 − alkalinity, which could explain the correlation between calcification of Chara thalli and alkalinity of water bodies in the field.

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Section: Dependence Of Calcification On the Utilization Of Dicsupporting

confidence: 78%

Section: Dependence Of Calcification On the Utilization Of Dicmentioning

confidence: 48%

Section: Dependence Of Calcification On the Utilization Of Dicmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Significance of HCO3- alkalinity in calcification and utilization of dissolved inorganic carbon in Chara vulgaris

Wang¹,

Ni²,

Yu³

2017

Aquat. Biol.

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“…Wang et al. () showed in laboratory experiments that encrustation is affected by dissolved inorganic carbon under hard‐water conditions. On a species level, negative correlations of TIC and precipitated CaCO 3 were found for all species (except for Nitellopsis subspinosa at Lake Lützlow and C. tomentosa at Lake Krüselin).…”

Section: Discussionmentioning

confidence: 99%

The seasonal effects on the encrustation of charophytes in two hard‐water lakes

Herbst

Tümpling

Schubert

2018

Journal of Phycology

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Encrustation and element content of six charophyte species from two hard-water lakes were investigated monthly for a period of 1 year. Seasonal patterns were analyzed for the interaction of water chemistry. Encrustation followed a seasonal pattern for Chara contraria, Chara subspinosa, and Nitellopsis obtusa in Lake Krüselin and for Chara globularis and Chara tomentosa in Lake Lützlow. However, no seasonality in the precipitated CaCO was observed for C. subspinosa in Lake Lützlow and for C. tomentosa in Lake Krüselin, indicating a lake-specific dependency. Species-specific encrustation was found. Chara contraria and N. obtusa encrusted the most in June and August, whereas C. subspinosa and Nitella flexilis/opaca exhibited lowest encrustation in March and April. The precipitated CaCO of charophytes correlated negatively to the concentration of total inorganic carbon in both lakes. Element content of plant dry weight was species-specific for Ca and K, and lake-specific for Mg. No specific pattern was found for the TP and Fe contents. The results showed seasonal, species, and lake-specific influences on the encrustation of charophytes.

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Ammonia stress on the carbon metabolism of Ceratophyllum demersum

Gao

et al. 2014

Environmental Toxicology and Chemistry

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In the present study, carefully controlled pH ranges (7 and 9) were used to distinguish between the effects of un-ionized NH3 and the NH4 (+) ion. The objective was to find the effect of different total ammonia nitrogen concentrations and pH values on the carbon metabolism of Ceratophyllum demersum. The authors investigated the effects of ammonia on the nonstructural carbohydrate content in shoots of C. demersum. Ammonia treatment decreased the contents of nonstructural carbohydrate, soluble sugar, sucrose, fructose, and starch in leaves. Meanwhile, increasing the pH value exacerbated the decline of the C. demersum nonstructural carbohydrate content. In addition, the activity of invertase was increased during the experiment. These results suggest that ammonia severely inhibits plant growth by disturbing nonstructural carbohydrate content. It has been suggested that ammonia has toxic effects on C. demersum and that the higher the pH in water, the more obvious the physiological responses that C. demersum exhibits. The results of the present study can provide some reference for studying the living conditions of submersed macrophytes under the stress of NH3.

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The mitigating effect of calcification-dependent of utilization of inorganic carbon of Chara vulgaris Linn on NH4-N toxicity

Cited by 12 publications

References 46 publications

Significance of HCO3- alkalinity in calcification and utilization of dissolved inorganic carbon in Chara vulgaris

Significance of HCO3- alkalinity in calcification and utilization of dissolved inorganic carbon in Chara vulgaris

The seasonal effects on the encrustation of charophytes in two hard‐water lakes

Ammonia stress on the carbon metabolism of Ceratophyllum demersum

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