Investigation of systematic CD distribution error on intrafield

2016 ◽  
Author(s):  
Keunjun Kim ◽  
Daewoo Kim ◽  
Jung-Hyun Kang ◽  
Inseok Jeong ◽  
Sung Koo Lee ◽  
...  
Keyword(s):  
Cd Distribution ◽  
Distribution Error

scholarly journals Analysis of Cadmium Root Retention for Two Contrasting Rice Accessions Suggests an Important Role for OsHMA2

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 806
Author(s):  
Moez Maghrebi ◽  
Elena Baldoni ◽  
Giorgio Lucchini ◽  
Gianpiero Vigani ◽  
Giampiero Valè ◽  
...  
Keyword(s):  
Transcript Abundance ◽  
Root Cells ◽  
Expression Levels ◽  
Cd Tolerance ◽  
Relative Contribution ◽  
Relative Transcript Abundance ◽  
Potential Capacity ◽  
Cd Distribution ◽  
Cd Exposure ◽  
Cd Availability

Two rice accessions, Capataz and Beirao, contrasting for cadmium (Cd) tolerance and root retention, were exposed to a broad range of Cd concentrations (0.01, 0.1, and 1 μM) and analyzed for their potential capacity to chelate, compartmentalize, and translocate Cd to gain information about the relative contribution of these processes in determining the different pathways of Cd distribution along the plants. In Capataz, Cd root retention increased with the external Cd concentration, while in Beirao it resulted independent of Cd availability and significantly higher than in Capataz at the lowest Cd concentrations analyzed. Analysis of thiol accumulation in the roots revealed that the different amounts of these compounds in Capataz and Beirao, as well as the expression levels of genes involved in phytochelatin biosynthesis and direct Cd sequestration into the vacuoles of the root cells, were not related to the capacity of the accessions to trap the metal into the roots. Interestingly, the relative transcript abundance of OsHMA2, a gene controlling root-to-shoot Cd/Zn translocation, was not influenced by Cd exposure in Capataz and progressively increased in Beirao with the external Cd concentration, suggesting that activity of the OsHMA2 transporter may differentially limit root-to-shoot Cd/Zn translocation in Capataz and Beirao.

scholarly journals Influence of CdCl2 and CdSO4 supplementation on Cd distribution and ligand environment in leaves of the Cd hyperaccumulator Noccaea (Thlaspi) praecox

2013 ◽  
Vol 370 (1-2) ◽  
pp. 125-148 ◽  
Author(s):  
Špela Koren ◽  
Iztok Arčon ◽  
Peter Kump ◽  
Marijan Nečemer ◽  
Katarina Vogel-Mikuš
Keyword(s):  
Ligand Environment ◽  
Cd Distribution ◽  
Thlaspi Praecox

scholarly journals Identification of the factors determining the concentration and spatial distribution of Zn, Pb and Cd in the soils of the non-forest Tatra Mountains (southern Poland)

2022 ◽  
Author(s):  
Krystyna Ciarkowska ◽  
Anna Miechówka
Keyword(s):  
Distribution Patterns ◽  
Parent Material ◽  
Tatra Mountains ◽  
Spatial Continuity ◽  
Factors Affecting ◽  
Range Transport ◽  
West Carpathians ◽  
Potential Factors ◽  
Cd Distribution ◽  
Tatra National Park

AbstractWe investigated trace-metal (TM)––Zn, Pb and Cd––concentrations and spatial distributions in the uppermost layers of non-forest soils from Tatra National Park (West Carpathians). We aimed to determine the main factors affecting the distribution of TMs, as well as the risk they posed to the environment. TM concentrations were compared to the target and intervention values established by the Dutch Ministry. Principle component analysis was used to identify the potential factors affecting TM accumulation, with two-factor analysis being applied to further examine the importance of any given factor. To examine the regularity of the TM distribution, semivariograms were created. The semivariograms of Cd and Pb were similar, suggesting a moderate spatial dependence for these metal concentrations, while the Zn variogram indicated a lack of spatial continuity for this metal. We established that the Zn, Pb and Cd exceeded target levels and at some sites, Cd exceeded the intervention values, posing a strong ecological risk to the environment. Our study confirmed that the parent rock was the most important factor affecting the TM accumulation. The carbonate-free soils differed from carbonate soils in the second important factor affecting TM accumulation, for carbonate-free soils it was location when for carbonate soils–TM content in the parent material. The Zn, Pb and Cd distribution patterns indicated that Cd, but also to a lesser degree Pb and Zn, accumulation mainly resulted from long-range transport from industrialised areas, while the Zn concentrations were also affected by local sources, such as the historical mining of Zn ore.

Influences of elevated O3 and CO2 on Cd distribution in different Festuca arundinacea tissues

Chemosphere ◽  
2021 ◽  
pp. 133343
Author(s):  
Yang Jiang ◽  
Dan Chen ◽  
Pan Yang ◽  
Wenjing Ning ◽  
Min Cao ◽  
...  
Keyword(s):  
Festuca Arundinacea ◽  
Elevated O3 ◽  
Cd Distribution

Effects of Different Water Managements on Yield and Cadmium Accumulation in Rice

2014 ◽  
Vol 1073-1076 ◽  
pp. 248-252
Author(s):  
Yin Fei Lv ◽  
Yan Fang Ren ◽  
Dong Liu ◽  
Yan Chao Zhang ◽  
Jun Yu He
Keyword(s):  
Rice Yield ◽  
Cadmium Accumulation ◽  
Aerobic Treatment ◽  
Seed Setting ◽  
Ph Change ◽  
Panicle Number ◽  
Intermittent Irrigation ◽  
Cd Distribution ◽  
Seed Setting Rate ◽  
Cadmium Contaminated Soil

Water management affects the bioavailability of cadmium (Cd) in the soil and hence their accumulation in rice and grain yields. A pot experiment was carried out to investigate the effects of different water managements (flooding, intermittent irrigation and aerobic) on rice yield and cadmium accumulation in rice plants growing on cadmium contaminated soil. The results showed that compared to the flooding and aerobic treatment, the intermittent irrigation increased grain yield by 7.55-29.58%, which contributed to the increase of seed setting rate and panicle number. Compared with the intermittent irrigation, aerobic treatment significantly increased Cd contents in roots, straw and grains, while flooding reduced the Cd contents in rice. Compared with flooding, both aerobic and intermittent irrigation enhanced Cd distribution in the root and reduced it in the straw and grain. With increasing irrigation from aerobic to flooded conditions, the soil available Cd concentrations decreased significantly. The patterns of soil pH change were just opposite to those of soil available Cd. Thus, intermittent irrigation could increase rice yield and also reduce Cd in the grain.

Subcellular Cd distribution and its correlation with antioxidant enzymatic activities in wheat (Triticum aestivum) roots

2011 ◽  
Vol 74 (4) ◽  
pp. 874-881 ◽  
Author(s):  
Li Dandan ◽  
Zhou Dongmei ◽  
Wang Peng ◽  
Weng Nanyan ◽  
Zhu Xiangdong
Keyword(s):  
Triticum Aestivum ◽  
Enzymatic Activities ◽  
Cd Distribution

Analysis of Repair Distribution, Error Correction Rates And Repair Successfulness In L2*

2012 ◽  
Vol 67 (2) ◽  
pp. 225-255 ◽  
Author(s):  
Mirjana Matea Kovač ◽  
Biljana Milatović
Keyword(s):  
Error Correction ◽  
Distribution Error

Corrigendum to “Pb, Cu and Cd distribution in five estuary systems of Marche, central Italy” [Mar. Pollut. Bull. 96 Issue 1–2, (15 July 2015) 441–449]

2017 ◽  
Vol 114 (1) ◽  
pp. 635
Author(s):  
Anna Annibaldi ◽  
Silvia Illuminati ◽  
Cristina Truzzi ◽  
Giulia Libani ◽  
Giuseppe Scarponi
Keyword(s):  
Central Italy ◽  
Cd Distribution

Cadmium variability in leaves of a Salix fragilis: simulation and implications for leaf sampling

2001 ◽  
Vol 31 (2) ◽  
pp. 313-321 ◽  
Author(s):  
S Luyssaert ◽  
M Van Meirvenne ◽  
N Lust
Keyword(s):  
Sampling Strategy ◽  
Dry Mass ◽  
Sampling Procedure ◽  
Pollution Level ◽  
Salix Fragilis ◽  
Indicator Simulation ◽  
Leaf Sampling ◽  
Current Sampling ◽  
Cd Distribution ◽  
Sun Leaves

Plant analysis is a valuable tool to evaluate the pollution level. However, leaf sampling is complicated because of the high variability within the crown. To investigate the variability of cadmium (Cd) in the leaves of a tree, we sampled one Salix fragilis L. at 292 locations, each with a volume of 0.3 × 0.3 × 0.3 m. The Cd concentration was found to be normally distributed within a range from 2.4 to 10.6 mg·kg–1 dry mass (DM), with an average of 6.3 mg·kg–1 DM. A trend was found with high values in the lower parts of the crown and low Cd concentrations at the top. After removal of this trend the residuals showed a clear spatial structure modelled by a variogram. The Cd distribution in the leaves of the entire tree was predicted by sequential indicator simulation. These results were used to evaluate the current sampling strategy for tree leaves, i.e., sampling sun leaves of the upper third of the tree crown. The latter procedure was found to yield biased estimates of the average Cd concentration as well as the risk of exceeding a contamination threshold. An alternative sampling procedure is proposed. This procedure investigates whether a trend is present. Once the height where sampling will result in a correct statement of the tree's pollution is located, the rest of the stand could be sampled at this height.

Effects of Se on Cd distribution in pregnant hamsters

1995 ◽  
Vol 78 ◽  
pp. 57
Author(s):  
M. Minta ◽  
B. Biemacki ◽  
B. Wlodarczyk ◽  
J. Szkoda ◽  
J. Zmudzki
Keyword(s):  
Cd Distribution
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