caa a22 4500 477110428 CHVBK 20180405111607.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF00011164 doi (NATIONALLICENCE)springer-10.1007/BF00011164 Agarose as a suitable substrate for use in the study of Al dynamics in the rhizosphere [Elektronische Daten] [Henri Calba, Benoît Jaillard, Paul Fallavier, Jean-Claude Arvieu] Because of experimental difficulties, few authors have studied the dynamics of aluminium in the rhizosphere. The aim of this paper is to present a suitable method for studying rhizosphere Al dynamics. It is based on the use of agarose as a substrate for plant growth. Agar and agarose gels are often used in rhizosphere studies, but most are poorly characterized and occasionally give rise to experimental artefacts, especially with low mobility elements like Al. The results reported here show that agarose is a relatively pure substrate, nearly devoid of phosphorus and other Al-complexing substances. Aqueous extracts of agarose also exhibit Al phytotoxicity equivalent to that of a nutrient solution. Since this substrate has the properties of a variable charge exchange complex, it can be considered as a physico-chemical model for organic matter. Finally, its Al adsorption capacity is high enough for the Al reserve in the substrate not to exert a limiting effect on plants and low enough to allow accurate measurement of Al depletion in the rhizophere. Kluwer Academic Publishers, 1996 agar nationallicence agarose nationallicence aluminium nationallicence ICPS nationallicence rhizosphere nationallicence Zea mays L nationallicence Calba Henri Unité de Recherches et Analyses, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, 2477 avenue du Val de Montferrand, 34032, Montpellier Cedex 1, France aut Jaillard Benoît Laboratoire de Science du Sol, Institut National de la Recherche Agronomique, 2 place Pierre Viala, 34060, Montpellier Cedex 1, France aut Fallavier Paul Unité de Recherches et Analyses, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, 2477 avenue du Val de Montferrand, 34032, Montpellier Cedex 1, France aut Arvieu Jean-Claude Laboratoire de Science du Sol, Institut National de la Recherche Agronomique, 2 place Pierre Viala, 34060, Montpellier Cedex 1, France aut Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl 178/1(1996-01-01), 67-74 0032-079X 178:1<67 1996 178 11104 https://doi.org/10.1007/BF00011164 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00011164 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Calba Henri Unité de Recherches et Analyses, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, 2477 avenue du Val de Montferrand, 34032, Montpellier Cedex 1, France aut NATIONALLICENCE 700 1- Jaillard Benoît Laboratoire de Science du Sol, Institut National de la Recherche Agronomique, 2 place Pierre Viala, 34060, Montpellier Cedex 1, France aut NATIONALLICENCE 700 1- Fallavier Paul Unité de Recherches et Analyses, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, 2477 avenue du Val de Montferrand, 34032, Montpellier Cedex 1, France aut NATIONALLICENCE 700 1- Arvieu Jean-Claude Laboratoire de Science du Sol, Institut National de la Recherche Agronomique, 2 place Pierre Viala, 34060, Montpellier Cedex 1, France aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 178/1(1996-01-01), 67-74 0032-079X 178:1<67 1996 178 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer