Impacts of organochlorines on plant cell cycle. Example of maize roots exposed to lindane and chlordecone
Event details
| Date | 21.05.2013 |
| Hour | 16:15 › 17:15 |
| Speaker | Dr Muriel Raveton, LECA-Pollution, Environnement, Ecotoxicologie, Ecoremédiation (P3E), Université Joseph Fourier, Grenoble, France |
| Location | |
| Category | Conferences - Seminars |
Organochlorines (OCs) are known to be persistent organic pollutants due to their high lipophilicity and stability. Therefore, solutions to restore polluted system by bio-technologies are studied especially using plant materials. For this purpose, phytoextraction of standard OCs, lindane, was experimented. Screening of plant species adapted to OCs exposition (biomass and morphological criteria) permitted to select Zea mays as a relatively tolerant plant. Therefore, 7-day-old plants were exposed to a concentration range of lindane (0.07 – 7 mg/l) and chlordecone (0.008-1 mg/l) to determine toxicity featuring. Using biomass, oxidative stress, apoptosis, cell death indicators and cell cycle regulators, the OCs effects on root tissues were characterized. Root cell viability was strongly dependent on the OCs concentrations: apoptosis and cell death exponentially increased with OCs concentrations. However, some differences in cell cycle regulation were noted comparing roots exposed to lindane and chlordecone.
Practical information
- General public
- Free
- This event is internal
Organizer
- IIE
Contact
- Dr Jean-Paul Schwitzguébel, LBE