Copper and cobalt accumulation in plants: a critical assessment of the current state of knowledge
Bastien Lange,Antony van der Ent,Antony van der Ent,Alan J. M. Baker,Alan J. M. Baker,Alan J. M. Baker,Guillaume Echevarria,Grégory Mahy,François Malaisse,Pierre Jacques Meerts,Olivier Pourret,Nathalie Verbruggen,Michel-Pierre Faucon +12 more
TL;DR: Practical application of Cu-Co accumulator plants in phytomining is limited due to their dose-dependent accumulation characteristics, although for Co field trials may be warranted on highly Co-contaminated mineral wastes because of its relatively high metal value.
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Abstract: This review synthesizes contemporary understanding of copper-cobalt (Cu-Co) tolerance and accumulation in plants. Accumulation of foliar Cu and Co to > 300 μg g-1 is exceptionally rare globally, and known principally from the Copperbelt of Central Africa. Cobalt accumulation is also observed in a limited number of nickel (Ni) hyperaccumulator plants occurring on ultramafic soils around the world. None of the putative Cu or Co hyperaccumulator plants appears to comply with the fundamental principle of hyperaccumulation, as foliar Cu-Co accumulation is strongly dose-dependent. Abnormally high plant tissue Cu concentrations occur only when plants are exposed to high soil Cu with a low root to shoot translocation factor. Most Cu-tolerant plants are Excluders sensu Baker and therefore setting nominal threshold values for Cu hyperaccumulation is not informative. Abnormal accumulation of Co occurs under similar circumstances in the Copperbelt of Central Africa as well as sporadically in Ni hyperaccumulator plants on ultramafic soils; however, Co-tolerant plants behave physiologically as Indicators sensu Baker. Practical application of Cu-Co accumulator plants in phytomining is limited due to their dose-dependent accumulation characteristics, although for Co field trials may be warranted on highly Co-contaminated mineral wastes because of its relatively high metal value.
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Citations
The Role of Cellulose in Microbial Diversity Changes in the Soil Contaminated with Cadmium
TL;DR: In this article , a pot greenhouse experiment was conducted to determine the usability of Sinapis alba L. and Avena sativa L. for the phytoremediation of soil contaminated with Cd2+ and to verify cellulose viability in the remediation of soil under cadmium pressure in doses from 4 to 16 mg Cd 2+ kg−1 soil d.m.
Cobalt and molybdenum transport in plants
Aryadeep Roychoudhury,Swarnavo Chakraborty +1 more
- 01 Jan 2021
TL;DR: The plasma membrane-associated molybdate transporter protein MOT1 as discussed by the authors shows huge similarities with the sulfate transporters and exhibits high accumulation of Co in the root system and nodules in leguminous plants.
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Effect of Pseudomonas putida-producing pyoverdine on copper uptake by Helianthus annuus cultivated on vineyard soils
TL;DR: In this article , the role of siderophores in the extraction of Cu from the soil-bearing phases and its phytoavailability in vineyard soils was identified, and a bioaugmentation-assisted approach was used to reduce the Cu load in vineyards.
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Advantages and limits to copper phytoextraction in vineyards
TL;DR: In this paper, the main practices and associated constraints that could theoretically be used to maximize Cu phytoextraction at field scale, including the use of Cu-accumulating plants grown with acidifying plants (e.g., leguminous plants), and/or in the presence of acidifying fertilizers (ammonium, elemental sulfur), or with soluble "biochelators" added to the soil such as natural humic substances or metabolites produced by rhizospheric bacteria such as siderophores, in the inter-rows.
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Olivier Pourret,Lange,Raul E. Martinez,Oliver Wiche,Michel-Pierre Faucon +4 more
- 18 Jul 2019
TL;DR: In this paper, the geochemical behavior of rare earth elements (REE) has been mainly investigated in geological systems where they represent the best proxies for processes occurring at the interface between different media.
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