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Plant response to environmental stress and heavy metals team

Published on 18 October 2017



Team leaders

 


Jacques Bourguignon

Phone: 04 38 78 46 88
Fax: 04 38 78 50 91
 
 


Stéphane Ravanel


Phone: 04 38 78 33 83
Fax: 04 38 78 50 91

Address

Laboratoire Physiologie Cellulaire & Végétale
Institut de Biosciences et ​Biotechnologies de Grenoble
CEA-Grenoble
17 avenue​ des Martyrs
38 054 Grenoble cedex 9
France

Members of the team


Claude Alban, INRA researcher
Anne-Marie Boisson, CNRS technician (80%)
Jacques Bourguignon, CEA researcher
Justine Choulet, student
Sylvie Figuet, INRA technical assistant (50%)
Jacqueline Martin-Laffon, CNRS Research engineer (3​0%)
Pauline Petit, PhD student
Stéphane Ravanel, INRA researcher
Benoît Revel, PhD student
Corinne Rivasseau, CEA researcher
Nelson Serre, PhD student​


Key words
Heavy metal stress, heavy metal detoxification, cadmium, caesium, RMN, ICP-MS, proteomics, metabolomics, transcriptomics, vacuole, selenium binding protein, Arabidopsis, plant cells and algae cultures, uranium, phytoremediation, MeP pathway, light stress, phosphate deficiency​


Introduction

Contamination of soil and water by heavy metals (HM) represents a major environmental hazard to human health. Soil pollution by HM currently affects about 235 million hectares. Understanding how plants respond to HM is crucial in the quest to improve plant capacity to resist to HM pollution. Inside the plant, different processes contribute to enhance metal tolerance; including extracellular immobilization (cell wall and other carbohydrates), active exclusion into the apoplast, chelation in the cytosol and sequestration into the vacuoles. 

Therefore, a better comprehension of the molecular mechanisms controlling these processes, as well as understanding metal toxicity and accumulation in plants, is of prime importance to design new strategies of phytoremediation via engineered plants or natural hyperaccumulators but also for phytomining and food crop biofortification. This is also very important for the selection of crops with low HM contents, or from an ecotoxicological point of view, for example to identify biomarkers of pollution.

We are interested in evaluating the impact of HM stresses on cell function and elucidating the biochemical and physiological defence mechanisms adopted by plants to counter these stresses.