Seasonal patterns of cadmium accumulation in Arrhenatherum elatius (Poaceae): Influence of mycorrhizal and endophytic fungal colonisation |
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| Authors: | Annabelle Deram Florence Languereau-Leman Mike Howsam Daniel Petit Chantal Van Haluwyn |
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| Institution: | 1. Institut Lillois d’Ingénierie de la Santé, Université Droit et Santé de Lille – EA 2690, 42, rue Ambroise Paré 59 120 Loos, France;2. Département de Botanique, Faculté des Sciences Pharmaceutiques et Biologiques, Université Droit et santé de Lille – EA 2690, 3, rue du Professeur Laguesse, B.P. 83, F-59006 Lille cedex, France;3. Faculté des Sciences Pharmaceutiques et Biologiques, Université Droit et Santé de Lille – EA 2690, CUMA, 3, rue du Professeur Laguesse, B.P. 83, F-59006 Lille cedex, France;4. Laboratoire de Génétique et Evolutions des Populations Végétales, UPRESA-CNRS 8016, Bât SN2, Université des Sciences et Techniques de Lille, Villeneuve d’Ascq, 59655 France |
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| Abstract: | We investigated the influence of arbuscular mycorrhizae (AM) and dark septate fungi (DSF) colonisation on cadmium (Cd) accumulation in Arrhenatherum elatius from heavy metal-contaminated sites. AM colonisation disappeared when Cd concentrations in soil increased, while DSF infection was weak but constant throughout the experiment indicating that soil heavy metals are toxic to AM but not to DSF. AM colonisation was greatest when plant Cd concentrations were highest providing evidence that AM colonisation may influence Cd accumulation. In addition, the disappearance of AM and the concomitant reduction of Cd in shoots during seed maturation result in our suggestion that seasonal variation in AM may play a role in protecting developing seeds from soil pollution. |
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