Characterisation of Zinc and Cadmium Tolerance in Arabidopsis Halleri

Characterisation of Zinc and Cadmium Tolerance in Arabidopsis Halleri PDF Author: Glenda Willems
Publisher:
ISBN:
Category :
Languages : en
Pages : 334

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Book Description
Dans cette étude, nous avons développé une approche de type Quantitative Trait Loci (QTL) afin d'étudier le déterminisme génétique de la tolérance au zinc (Zn) et au cadmium (Cd) dans l'espèce Arabidopsis halleri A. halleri (n = 8) est une espèce métallophyte distribuée sur des sites pollués et non pollués. La tolérance au Zn et au Cd étant constitutivement présentes dans l'espèce étudiée, nous avons développé une population de type backcross (BC 1) à partir d'un croisement interspécifique entre un individu A. halleri, et un individu de l'espèce proche non tolérante A. lyrata ssp. petraea (n = 8). Une carte génétique constituée de 8 groupes de liaison, équivalents au nombre de chromosomes des deux espèces parentales a été construite. Nous avons identifié 3 QTLs pour la tolérance au Zn, ainsi que pour la tolérance au Cd. Le QTL majeur de la tolérance au Cd est également impliqué dans la tolérance au Zn. Nous proposons 3 gènes candidats pour la tolérance au Zn HMA4 (pompe à métaux), MTP1-A et MTP1-B (des transporteurs de Zn). HMA4 co-localise aussi avec le QTL majeur de la tolérance au Cd. Nous n'avons identifié aucun gène candidat potentiel pour les deux autres régions QTL de la tolérance au Cd. Vu la taille des intervalles de confiance associés aux régions QTLs (> 4 cM), nous ne pouvons actuellement pas confirmer avec certitude l'implication des gènes proposés ci-dessus dans la tolérance au Zn ou au Cd. Cependant, la localisation dans les zones QTL de ces gènes actifs dans l'homéostasie des métaux justifie aujourd'hui qu'ils fassent l'objet d'une étude plus approfondie en génomique fonctionnelle afin de déceler leur contribution exacte à la tolérance aux métaux lourds dans A. halleri ainsi qu'en évolution moléculaire afin de rechercher par analyse du polymorphisme nucléaire d'éventuelles signatures de sélection. En vue de l'identification d'autres gènes potentiellement impliqués dans la tolérance au Zn, nous avons appliqué une deuxième stratégie consistant dans l'intégration des résultats obtenus dans une analyse transcriptomique et dans l'analyse QTL de la tolérance au Zn.

Characterisation of Zinc and Cadmium Tolerance in Arabidopsis Halleri

Characterisation of Zinc and Cadmium Tolerance in Arabidopsis Halleri PDF Author: Glenda Willems
Publisher:
ISBN:
Category :
Languages : en
Pages : 334

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Book Description
Dans cette étude, nous avons développé une approche de type Quantitative Trait Loci (QTL) afin d'étudier le déterminisme génétique de la tolérance au zinc (Zn) et au cadmium (Cd) dans l'espèce Arabidopsis halleri A. halleri (n = 8) est une espèce métallophyte distribuée sur des sites pollués et non pollués. La tolérance au Zn et au Cd étant constitutivement présentes dans l'espèce étudiée, nous avons développé une population de type backcross (BC 1) à partir d'un croisement interspécifique entre un individu A. halleri, et un individu de l'espèce proche non tolérante A. lyrata ssp. petraea (n = 8). Une carte génétique constituée de 8 groupes de liaison, équivalents au nombre de chromosomes des deux espèces parentales a été construite. Nous avons identifié 3 QTLs pour la tolérance au Zn, ainsi que pour la tolérance au Cd. Le QTL majeur de la tolérance au Cd est également impliqué dans la tolérance au Zn. Nous proposons 3 gènes candidats pour la tolérance au Zn HMA4 (pompe à métaux), MTP1-A et MTP1-B (des transporteurs de Zn). HMA4 co-localise aussi avec le QTL majeur de la tolérance au Cd. Nous n'avons identifié aucun gène candidat potentiel pour les deux autres régions QTL de la tolérance au Cd. Vu la taille des intervalles de confiance associés aux régions QTLs (> 4 cM), nous ne pouvons actuellement pas confirmer avec certitude l'implication des gènes proposés ci-dessus dans la tolérance au Zn ou au Cd. Cependant, la localisation dans les zones QTL de ces gènes actifs dans l'homéostasie des métaux justifie aujourd'hui qu'ils fassent l'objet d'une étude plus approfondie en génomique fonctionnelle afin de déceler leur contribution exacte à la tolérance aux métaux lourds dans A. halleri ainsi qu'en évolution moléculaire afin de rechercher par analyse du polymorphisme nucléaire d'éventuelles signatures de sélection. En vue de l'identification d'autres gènes potentiellement impliqués dans la tolérance au Zn, nous avons appliqué une deuxième stratégie consistant dans l'intégration des résultats obtenus dans une analyse transcriptomique et dans l'analyse QTL de la tolérance au Zn.

Identification and Characterisation of Genes Involved in Metal Tolerance and Hyperaccumulation in Arabidopsis Halleri

Identification and Characterisation of Genes Involved in Metal Tolerance and Hyperaccumulation in Arabidopsis Halleri PDF Author: Dörthe B. Dräger
Publisher:
ISBN:
Category :
Languages : en
Pages : 119

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Book Description


Agromining: Farming for Metals

Agromining: Farming for Metals PDF Author: Antony van der Ent
Publisher: Springer
ISBN: 3319618997
Category : Science
Languages : en
Pages : 311

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Book Description
This is the first book on global agromining/phytomining technology. It presents the complete metal farming or agromining chain; an emerging technology expected to be transformative in the extraction of resources of those elements not accessible by traditional mining techniques. Meeting the demand for critical minerals (rare earth elements, platinum group elements, nickel cobalt) is increasingly difficult in the 21st century due to resource depletion and geopolitical factors. Agromining uses hyperaccumulator plants as “metal crops” farmed on sub-economic soils or mineral waste to obtain valuable elements. This book, which follows the metal farming chain, starts with the latest information on the global distribution and ecology of hyperaccumulator plants, biogeochemical pathways, the influence of rhizosphere microbes, as well as aspects of propagation and conservation of these unusual plants. It then presents the state of the art in new tools for identifying hyperaccumulator plants and for understanding their physiology and molecular biology. It goes on to describe the agronomy of “metal crops,” and opportunities for incorporating agromining into rehabilitation and mine closure, including test-cases of nickel, cobalt, selenium, thallium, rare earth elements and PGEs. Finally, it concludes with an overview of the latest developments in the processing of bio-ores and associated products. This book is edited and authored by the pioneers in the field who have been at the foreground of the development of agromining over the past three decades. It is timely as agromining is now at a pivotal point in its development with rapid expansion of activities in the field around the globe. As such it is of interest to environmental professionals in the minerals industry, government regulators and academics.

Cadmium Toxicity and Tolerance in Plants

Cadmium Toxicity and Tolerance in Plants PDF Author: Mirza Hasanuzzaman
Publisher: Academic Press
ISBN: 0128148659
Category : Technology & Engineering
Languages : en
Pages : 622

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Book Description
Cadmium Toxicity and Tolerance in Plants: From Physiology to Remediation presents a single research resource on the latest in cadmium toxicity and tolerance in plants. The book covers many important areas, including means of Cd reduction, from plant adaptation, including antioxidant defense, active excretion and chelation, to phytoextraction, rhizo filtration, phytodegradation, and much more. In addition, it explores important insights into the physiological and molecular mechanisms of Cd uptake and transport and presents options for improving resistance to Cd stresses. It will be ideal for both researchers and students working on cadmium pollution, plant responses and related fields of environmental contamination and toxicology. Includes all aspects of cadmium toxicity and tolerance in plants Provides a comprehensive overview of advances in cadmium toxicity, tolerance and adaptation in plants Elaborates on the advancement of eco-friendly techniques for cadmium remediation from soil and water Provides real-world, application focused techniques

Plant Metal Interaction

Plant Metal Interaction PDF Author: Parvaiz Ahmad
Publisher: Elsevier
ISBN: 0128031832
Category : Technology & Engineering
Languages : en
Pages : 654

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Book Description
Plant Metal Interaction: Emerging Remediation Techniques covers different heavy metals and their effect on soils and plants, along with the remediation techniques currently available. As cultivable land is declining day-by-day as a result of increased metals in our soil and water, there is an urgent need to remediate these effects. This multi-contributed book is divided into four sections covering the whole of plant metal interactions, including heavy metals, approaches to alleviate heavy metal stress, microbial approaches to remove heavy metals, and phytoremediation. Provides an overview of the effect of different heavy metals on growth, biochemical reactions, and physiology of various plants Serves as a reference guide for available techniques, challenges, and possible solutions in heavy metal remediation Covers sustainable technologies in uptake and removal of heavy metals

Advanced Science and Technology for Biological Decontamination of Sites Affected by Chemical and Radiological Nuclear Agents

Advanced Science and Technology for Biological Decontamination of Sites Affected by Chemical and Radiological Nuclear Agents PDF Author: Nelson Marmiroli
Publisher: Springer Science & Business Media
ISBN: 140205520X
Category : Technology & Engineering
Languages : en
Pages : 275

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Book Description
This book presents a comprehensive and integrated approach toward solving the ever growing problem of soil and water contamination by radioactive and chemical wastes from military facilities, weapons industries, and weapons storage. The authors combine theory and practice in specific contamination examples. This is a monograph born out of a unique combination of expertise and practical advice and is ideal for operators in the field of decontamination.

Cadmium Tolerance in Plants

Cadmium Tolerance in Plants PDF Author: Mirza Hasanuzzaman
Publisher: Academic Press
ISBN: 0128163712
Category : Science
Languages : en
Pages : 630

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Book Description
Cadmium Toxicity and Tolerance in Plants: Agronomic, Genetic, Molecular and Omic Approaches presents research and latest developments on mechanisms of cadmium tolerance covering both lab and field conditions. This book contains important insights and options for minimizing Cd accumulation in plants and mitigating Cd toxicity. Topics covered include using various omics approaches to understanding plant responses to Cd, novel technologies for developing Cd tolerance and integrated breeding approaches to mitigate Cd stress in crops. Cadmium Toxicity and Tolerance in Plants: Agronomic, Genetic, Molecular and Omic Approaches is a valuable resource for both researchers and students working on cadmium pollution and plant responses as well as related fields of environmental contamination and toxicology. Provides data on mechanisms of cadmium tolerance at the cell, organ and whole plant level Covers several major approaches, molecular and agronomic, in addressing cadmium toxicity in plants and soil Offers real-world, application focused techniques

Detoxification of Heavy Metals

Detoxification of Heavy Metals PDF Author: Irena Sherameti
Publisher: Springer Science & Business Media
ISBN: 3642214088
Category : Science
Languages : en
Pages : 468

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Book Description
Heavy metals are severe environmental pollutants, and many of them are toxic even at very low concentrations. With industrial development, soil pollution with heavy metal elements have dramatically increased. The uptake of heavy metals via plants that are exposed to contaminated soils is a risk for human health and a major hazard for the ecosystem as a whole, including soil microorganisms. On the other hand, plants may be used in the decontamination of soils. The topics presented in this book include: sources of heavy metals contaminants in soils; plant species that can grow on contaminated soils; the phytoremediation of contaminated soils; tolerance, accumulation and detoxification mechanisms of zinc, copper, arsenic, cadmium and vanadium in plants; the critical role of sulfur metabolism in heavy metal tolerance; the role of aquatic macrophytes, plant growth-promoting bacteria, sugar crops and earthworms in detoxification; and heavy metal stabilization by promoting zeolite synthesis in soils.

Plants and Heavy Metals

Plants and Heavy Metals PDF Author: Antonella Furini
Publisher: Springer Science & Business Media
ISBN: 9400744412
Category : Science
Languages : en
Pages : 96

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Book Description
This title focuses on the many aspects of the interaction between plants and heavy metals. Not only it describes the effects of heavy metal toxicity on the plant cell and its organs but it also examines the mechanisms that plants adopt to scavenge heavy metals at cellular, physiological, and metabolic level. Plants and Heavy Metals also analyses Hyperaccumulator plants and shows their potential role in phytoremediation technologies in light of the recent research results.

Transgenic Plant Technology for Remediation of Toxic Metals and Metalloids

Transgenic Plant Technology for Remediation of Toxic Metals and Metalloids PDF Author: M.N.V. Prasad
Publisher: Academic Press
ISBN: 0128143908
Category : Science
Languages : en
Pages : 566

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Book Description
Transgenic Plant Technology for Remediation of Toxic Metals and Metalloids covers all the technical aspects of gene transfer, from molecular methods, to field performance using a wide range of plants and diverse abiotic stress factors. It describes methodologies that are well established as a key resource for researchers, as well as a tool for training technicians and students. This book is an essential reference for those in the plant sciences, forestry, agriculture, microbiology, environmental biology and plant biotechnology, and those using transgenic plant models in such areas as molecular and cell biology, developmental biology, stress physiology and phytoremediation. Provides in-depth coverage of transgenic plant technology for environmental problems Discusses background and an introduction to techniques and salient protocols using specific plants systems Includes emerging strategies for application of transgenic plans in remediation