Sanon Arsène, Beguiristain T., Cébron A., Berthelin J., Sylla Samba, Duponnois Robin. (2012). Differences in nutrient availability and mycorrhizal infectivity in soils invaded by an exotic plant negatively influence the development of indigenous Acacia species. In :
Sastre-Conde I. (ed.), Poggi-Varaldo M.H. (ed.), Lobo M.C. (ed.), Sanz J.L. (ed.), Macarie Hervé (ed.). Environmental risk and problems, strategies to reduce them through biotechnology and engineering. Journal of Environmental Management, 95 (Suppl.), p. S275-279. IMEBE.International Meeting on Environmental Biotechnology and Engineering, 3., Palma de Mallorca (ESP), 2008/09/21-25. ISSN 0301-4797.
Titre du document
Differences in nutrient availability and mycorrhizal infectivity in soils invaded by an exotic plant negatively influence the development of indigenous Acacia species
Année de publication
2012
Auteurs
Sanon Arsène, Beguiristain T., Cébron A., Berthelin J., Sylla Samba, Duponnois Robin
In
Sastre-Conde I. (ed.), Poggi-Varaldo M.H. (ed.), Lobo M.C. (ed.), Sanz J.L. (ed.), Macarie Hervé (ed.), Environmental risk and problems, strategies to reduce them through biotechnology and engineering
Source
Journal of Environmental Management, 2012,
95 (Suppl.), p. S275-279 ISSN 0301-4797
Colloque
IMEBE.International Meeting on Environmental Biotechnology and Engineering, 3., Palma de Mallorca (ESP), 2008/09/21-25
Plant species (exotic invasive vs native non-invasive) colonization pattern and the relation with the soil nutrient availability and AM fungi abundance, was investigated. Soil samples were collected from two sites: one invaded by the exotic plant, Amaranthus viridis, and one uninvaded site for chemical and AM propagules density analyses. Additionally, we grew five Sahelian Acacia species in soil from the two sites, sterilized or not, to test the involvement of soil biota in the invasion process. While nutrient availability was significantly higher in soil samples from the invaded sites, a drastic reduction in AM fungal community density, was observed. Moreover, Acacia seedlings' growth was severely reduced in soils invaded by Amaranthus and this effect was similar to that of sterilized soil of both origins. The observed growth inhibition was accompanied by reduction of AM colonization and nodulation of the roots. Finally, the influence of soil chemistry and AM symbiosis on exotic plants' invasion processes is discussed.
Plan de classement
Pédologie appliquée [068PEDAPP]
;
Interaction plante-sol [076AGRO10]
;
Symbioses [084SYMBIO]
Descripteurs
RELATION SOL PLANTE ; ADVENTICE ; INVASION ; COLONISATION ; CHIMIE DU SOL ; DISPONIBILITE EN NUTRIMENTS ; MYCORHIZE ; MICROBIOLOGIE DU SOL ; DENSITE ; NODULE RACINAIRE ; LEGUMINEUSE ; CROISSANCE ; ETUDE EXPERIMENTALE ; ETUDE COMPARATIVE
Description Géographique
SENEGAL
Localisation
Fonds IRD [F A010054771]
Identifiant IRD
fdi:010054774
