Phytoextraction with Brassica napus L.: A tool for sustainable management of heavy metal contaminated soils

2006 ◽  
Vol 144 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Veerle M.J. Grispen ◽  
Hans J.M. Nelissen ◽  
Jos A.C. Verkleij
Keyword(s):  
Heavy Metal ◽  
Brassica Napus ◽  
Contaminated Soils ◽  
Sustainable Management ◽  
Brassica Napus L

Phosphate and arsenate interactions in the rhizosphere of canola (Brassica napus)

2004 ◽  
Vol 31 (11) ◽  
pp. 1085 ◽  
Author(s):  
Mieke Quaghebeur ◽  
Zed Rengel
Keyword(s):  
Brassica Napus ◽  
Contaminated Soils ◽  
Direct Evidence ◽  
Plant Roots ◽  
Plant Tissues ◽  
Brassica Napus L ◽  
Soil Particles ◽  
Plant Soil ◽  
As Toxicity

Arsenate [As(V)] and phosphate [P(V)] compete for the same uptake systems in plant roots. For this reason, P(V) is often added to As-contaminated soils to reduce As(V) uptake and alleviate As toxicity. However, the addition of P(V) can result in an increase in As concentrations in plant tissues, which is often attributed to an increase in As(V) availability, although direct evidence for this explanation is lacking. Rhizosphere and batch desorption experiments were conducted to investigate (i) the effect of As(V) and P(V) additions, and plant phosphorus (P) status, on As(V) uptake by canola (Brassica napus L.) and (ii), P(V) and As(V) interactions at the surface of roots and specific soil particles (goethite and kaolinite). Results showed that P-deficient canola took up more As(V) from arsenated kaolinite, but transported less As from roots to shoots, than P-adequate canola. The addition of P(V) adsorbed on substrate increased As(V) uptake by canola but desorption experiments revealed that the addition of phosphated kaolinite to arsenated kaolinite was not likely to increase As(V) availability in the rhizosphere. It was concluded that plant P status together with P(V) and As(V) interactions at the surfaces of roots and soil particles need to be considered to properly asses P(V) and As(V) interactions in the plant–soil continuum.

Phytoremediation of metal-contaminated soils by the hyperaccumulator canola (Brassica napus L.) and the use of its biomass for ethanol production

Fuel ◽  
2016 ◽  
Vol 183 ◽  
pp. 107-114 ◽  
Author(s):  
Saurabh Sudha Dhiman ◽  
Chandrabose Selvaraj ◽  
Jinglin Li ◽  
Ranjitha Singh ◽  
Xin Zhao ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Ethanol Production ◽  
Contaminated Soils ◽  
Brassica Napus L

scholarly journals Phytoremediation based on canola (Brassica napus L.) and Indian mustard (Brassica juncea L.) planted on spiked soil by aliquot amount of Cd, Cu, Pb, and Zn

2008 ◽  
Vol 53 (No. 1) ◽  
pp. 7-15 ◽  
Author(s):  
M. Turan ◽  
A. Esringü
Keyword(s):  
Heavy Metal ◽  
Brassica Napus ◽  
Metal Uptake ◽  
Indian Mustard ◽  
Metal Availability ◽  
Heavy Metal Uptake ◽  
Brassica Napus L ◽  
Plant Parts ◽  
Spiked Soil ◽  
Soil Phytoremediation

The use of plants to remove heavy metals from soil (phytoremediation) is expanding due to its cost-effectiveness as compared to conventional methods and it has revealed a great potential. Since contaminants such as Pb or Cd have a limited bioavailability in the soil, methods to facilitate their transport to the shoots and roots of plants are required for successful phytoremediation. The objective of this study was to investigate the effects of addition of different rates (0, 3, 6 and 12 mmol/kg) of ethylene diaminetetraacetate (EDTA) on heavy metal availability in soils contaminated with 50 mg/kg Cd (CdCl<sub>2</sub>), 50 mg/kg Cu (CuSO<sub>4</sub>), 50 mg/kg Pb [Pb(NO<sub>3</sub>)<sub>2</sub>] and 50 mg/kg Zn (ZnSO<sub>4</sub>), and on the capacity of canola (Brassica napus L.) and Indian mustard (Brassica junceaL.) plants to uptake Cu, Cd, Pb and Zn in a growth chamber. Results indicated that EDTA application increased heavy metal availability and uptake by plants. Significant differences were obtained in both species and plant parts. As for plant species tested, canola was more effective in the uptake of Cu, Cd, Pb and Zn. Root heavy metal uptake of both species was higher than shoot heavy metal uptake.

scholarly journals Genome-Wide Characterization and Analysis of Metallothionein Family Genes That Function in Metal Stress Tolerance in Brassica napus L.

2018 ◽  
Vol 19 (8) ◽  
pp. 2181 ◽  
Author(s):  
Yu Pan ◽  
Meichen Zhu ◽  
Shuxian Wang ◽  
Guoqiang Ma ◽  
Xiaohu Huang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Brassica Napus ◽  
Metal Binding ◽  
Genome Mapping ◽  
Expression Patterns ◽  
Biomass Productivity ◽  
Brassica Species ◽  
Brassica Napus L ◽  
Origin And Evolution ◽  
Duplication Events

Brassica plants exhibit both high biomass productivity and high rates of heavy metal absorption. Metallothionein (MT) proteins are low molecular weight, cysteine-rich, metal-binding proteins that play crucial roles in protecting plants from heavy metal toxicity. However, to date, MT proteins have not been systematically characterized in Brassica. In this study, we identified 60 MTs from Arabidopsis thaliana and five Brassica species. All the MT family genes from Brassica are closely related to Arabidopsis MTs, encoding putative proteins that share similar functions within the same clades. Genome mapping analysis revealed high levels of synteny throughout the genome due to whole genome duplication and segmental duplication events. We analyzed the expression levels of 16 Brassica napus MTs (BnaMTs) by RNA-sequencing and real-time RT-PCR (RT-qPCR) analysis in plants under As3+ stress. These genes exhibited different expression patterns in various tissues. Our results suggest that BnaMT3C plays a key role in the response to As3+ stress in B. napus. This study provides insight into the phylogeny, origin, and evolution of MT family members in Brassica, laying the foundation for further studies of the roles of MT proteins in these important crops.

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