Authors: Olaia Liñero JeanYves Cornu Frederic Candaudap Oleg S Pokrovsky Sylvie Bussière Cécile Coriou Théophile HumannGuilleminot Thierry Robert Stéphane Thunot Alberto de Diego Christophe Nguyen
Publish Date: 2016/05/17
Volume: 408, Issue: 1-2, Pages: 163-181
Abstract
Sunflowers were grown hydroponically in greenhouse being exposed to low concentrations of Cd pCd2+ = 1103 At flower bud and grain filling stages plants were exposed for three days to 111Cd and at the same time subjected or not to fans to increase the transpiration The partitioning of 111Cd between plant organs measured by high resolution ICPMS was then modelledAlthough the use of fans increased the plant water uptake and transpiration by about 20 there were no significant effects on the partitioning of recent Cd Most of the recent Cd was recovered in roots 60 and only 28 were found in seeds 08 for the husk and 20 for the almonds The sequestration of recent Cd in a plant organ was successfully explained by its biomass and except for leaves by the biomass of other organs acting as competitive sinksO Liñero is grateful to the University of the Basque Country UPV/EHU and the University of Bordeaux for her predoctoral fellowship within the framework of the CrossBorder Euroregional Campus of International Excellence IdEx Bordeaux – Euskampus OS Pokrovsky thanks partial support of BIOGEOCLIM grant No 14B25310001 The authors are grateful to L Champolivier Terres Inovia for his helpful advices about the pollination and seed development of sunflower under controlled conditions
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