Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate
The object of this study was to analyze the dynamics of Al and protons in the rhizosphere of maize cultivated in a simple acid substrate, so as to allow the use of a dynamic model of the functioning of a rhizosphere consisting of an organic phase (an agarose gel) and a mineral phase (an amorphous aluminium hydroxide). Two cultivars of maize (Zea mays L.), one Al-sensitive and the other Al-tolerant, were cultivated on this substrate in the presence of different proportions of NH4+ and NO3-, which served to acidify the rhizosphere to a greater or lesser extent. The state of the agarose gel and of the cell walls of the roots were monitored using an ion exchange model which had previously been calibrated for each substrate. The experiment showed that Al and protons reduce root growth and the Ca and Mg content in the root, while relative growth varies little between pH 4.0 and pH 4.5. The model showed that competition between Al and protons for the binding sites of the cell walls might account for these results. The sensitivity of the model to the rate of Al(OH)3 dissolution and to the cation exchange capacity of the culture substrate was tested by numerical simulation. When roots release protons and dissolve Al(OH)3 in the rhizosphere, there is little possibility of Al desorption by protons on the cell walls at pHs compatible with good root growth of maize, plant specie sensitive to Al and H. Furthermore, the phytotoxicity of the different forms of Al hydroxides should be considered only in taking into account the dynamics of the whole system, in particular the solubilisation of Al in the rhizosphere.
id |
dig-cirad-fr-391923 |
---|---|
record_format |
koha |
spelling |
dig-cirad-fr-3919232024-01-27T23:53:03Z http://agritrop.cirad.fr/391923/ http://agritrop.cirad.fr/391923/ Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate. Calba Henri, Cazevieille Patrick, Jaillard Benoît. 1999. Plant and Soil, 209 : 57-69.https://doi.org/10.1023/A:1004515815446 <https://doi.org/10.1023/A:1004515815446> Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate Calba, Henri Cazevieille, Patrick Jaillard, Benoît eng 1999 Plant and Soil U10 - Informatique, mathématiques et statistiques P35 - Fertilité du sol F61 - Physiologie végétale - Nutrition Zea mays aluminium ion transport dans le sol rhizosphère pH substrat de culture sol acide modèle de simulation variété résistance aux facteurs nuisibles racine membrane cellulaire phytotoxicité échange d'ion http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_317 http://aims.fao.org/aos/agrovoc/c_16162 http://aims.fao.org/aos/agrovoc/c_7202 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_5753 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_89 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6520 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_5848 http://aims.fao.org/aos/agrovoc/c_3933 The object of this study was to analyze the dynamics of Al and protons in the rhizosphere of maize cultivated in a simple acid substrate, so as to allow the use of a dynamic model of the functioning of a rhizosphere consisting of an organic phase (an agarose gel) and a mineral phase (an amorphous aluminium hydroxide). Two cultivars of maize (Zea mays L.), one Al-sensitive and the other Al-tolerant, were cultivated on this substrate in the presence of different proportions of NH4+ and NO3-, which served to acidify the rhizosphere to a greater or lesser extent. The state of the agarose gel and of the cell walls of the roots were monitored using an ion exchange model which had previously been calibrated for each substrate. The experiment showed that Al and protons reduce root growth and the Ca and Mg content in the root, while relative growth varies little between pH 4.0 and pH 4.5. The model showed that competition between Al and protons for the binding sites of the cell walls might account for these results. The sensitivity of the model to the rate of Al(OH)3 dissolution and to the cation exchange capacity of the culture substrate was tested by numerical simulation. When roots release protons and dissolve Al(OH)3 in the rhizosphere, there is little possibility of Al desorption by protons on the cell walls at pHs compatible with good root growth of maize, plant specie sensitive to Al and H. Furthermore, the phytotoxicity of the different forms of Al hydroxides should be considered only in taking into account the dynamics of the whole system, in particular the solubilisation of Al in the rhizosphere. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/391923/1/391923.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1023/A:1004515815446 10.1023/A:1004515815446 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=91103 info:eu-repo/semantics/altIdentifier/doi/10.1023/A:1004515815446 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1023/A:1004515815446 |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
U10 - Informatique, mathématiques et statistiques P35 - Fertilité du sol F61 - Physiologie végétale - Nutrition Zea mays aluminium ion transport dans le sol rhizosphère pH substrat de culture sol acide modèle de simulation variété résistance aux facteurs nuisibles racine membrane cellulaire phytotoxicité échange d'ion http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_317 http://aims.fao.org/aos/agrovoc/c_16162 http://aims.fao.org/aos/agrovoc/c_7202 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_5753 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_89 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6520 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_5848 http://aims.fao.org/aos/agrovoc/c_3933 U10 - Informatique, mathématiques et statistiques P35 - Fertilité du sol F61 - Physiologie végétale - Nutrition Zea mays aluminium ion transport dans le sol rhizosphère pH substrat de culture sol acide modèle de simulation variété résistance aux facteurs nuisibles racine membrane cellulaire phytotoxicité échange d'ion http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_317 http://aims.fao.org/aos/agrovoc/c_16162 http://aims.fao.org/aos/agrovoc/c_7202 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_5753 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_89 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6520 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_5848 http://aims.fao.org/aos/agrovoc/c_3933 |
spellingShingle |
U10 - Informatique, mathématiques et statistiques P35 - Fertilité du sol F61 - Physiologie végétale - Nutrition Zea mays aluminium ion transport dans le sol rhizosphère pH substrat de culture sol acide modèle de simulation variété résistance aux facteurs nuisibles racine membrane cellulaire phytotoxicité échange d'ion http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_317 http://aims.fao.org/aos/agrovoc/c_16162 http://aims.fao.org/aos/agrovoc/c_7202 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_5753 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_89 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6520 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_5848 http://aims.fao.org/aos/agrovoc/c_3933 U10 - Informatique, mathématiques et statistiques P35 - Fertilité du sol F61 - Physiologie végétale - Nutrition Zea mays aluminium ion transport dans le sol rhizosphère pH substrat de culture sol acide modèle de simulation variété résistance aux facteurs nuisibles racine membrane cellulaire phytotoxicité échange d'ion http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_317 http://aims.fao.org/aos/agrovoc/c_16162 http://aims.fao.org/aos/agrovoc/c_7202 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_5753 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_89 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6520 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_5848 http://aims.fao.org/aos/agrovoc/c_3933 Calba, Henri Cazevieille, Patrick Jaillard, Benoît Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate |
description |
The object of this study was to analyze the dynamics of Al and protons in the rhizosphere of maize cultivated in a simple acid substrate, so as to allow the use of a dynamic model of the functioning of a rhizosphere consisting of an organic phase (an agarose gel) and a mineral phase (an amorphous aluminium hydroxide). Two cultivars of maize (Zea mays L.), one Al-sensitive and the other Al-tolerant, were cultivated on this substrate in the presence of different proportions of NH4+ and NO3-, which served to acidify the rhizosphere to a greater or lesser extent. The state of the agarose gel and of the cell walls of the roots were monitored using an ion exchange model which had previously been calibrated for each substrate. The experiment showed that Al and protons reduce root growth and the Ca and Mg content in the root, while relative growth varies little between pH 4.0 and pH 4.5. The model showed that competition between Al and protons for the binding sites of the cell walls might account for these results. The sensitivity of the model to the rate of Al(OH)3 dissolution and to the cation exchange capacity of the culture substrate was tested by numerical simulation. When roots release protons and dissolve Al(OH)3 in the rhizosphere, there is little possibility of Al desorption by protons on the cell walls at pHs compatible with good root growth of maize, plant specie sensitive to Al and H. Furthermore, the phytotoxicity of the different forms of Al hydroxides should be considered only in taking into account the dynamics of the whole system, in particular the solubilisation of Al in the rhizosphere. |
format |
article |
topic_facet |
U10 - Informatique, mathématiques et statistiques P35 - Fertilité du sol F61 - Physiologie végétale - Nutrition Zea mays aluminium ion transport dans le sol rhizosphère pH substrat de culture sol acide modèle de simulation variété résistance aux facteurs nuisibles racine membrane cellulaire phytotoxicité échange d'ion http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_317 http://aims.fao.org/aos/agrovoc/c_16162 http://aims.fao.org/aos/agrovoc/c_7202 http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_5753 http://aims.fao.org/aos/agrovoc/c_3393 http://aims.fao.org/aos/agrovoc/c_89 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6520 http://aims.fao.org/aos/agrovoc/c_6651 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_5848 http://aims.fao.org/aos/agrovoc/c_3933 |
author |
Calba, Henri Cazevieille, Patrick Jaillard, Benoît |
author_facet |
Calba, Henri Cazevieille, Patrick Jaillard, Benoît |
author_sort |
Calba, Henri |
title |
Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate |
title_short |
Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate |
title_full |
Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate |
title_fullStr |
Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate |
title_full_unstemmed |
Modelling of the dynamics of Al and protons in the rhizosphere of maize cultivated in acid substrate |
title_sort |
modelling of the dynamics of al and protons in the rhizosphere of maize cultivated in acid substrate |
url |
http://agritrop.cirad.fr/391923/ http://agritrop.cirad.fr/391923/1/391923.pdf |
work_keys_str_mv |
AT calbahenri modellingofthedynamicsofalandprotonsintherhizosphereofmaizecultivatedinacidsubstrate AT cazevieillepatrick modellingofthedynamicsofalandprotonsintherhizosphereofmaizecultivatedinacidsubstrate AT jaillardbenoit modellingofthedynamicsofalandprotonsintherhizosphereofmaizecultivatedinacidsubstrate |
_version_ |
1792491542035824640 |