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| Registros recuperados: 19 | |
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| Dousset, S.; Morel, J.L.; Jacobson, A.; Bitton, G.. |
| Cu binding to root exudates of two cultivated plants, wheat (Triticum aestivum) and rape (Brassica napus), and two weeds associated with wheat, dog daisy (Matricaria inodora) and cornflower (Centaurea cyanus), was studied in vitro under hydroponic and sterile conditions. Nutrient solutions were prepared with or without P. A MetPLATE microbiological test was used to assess the metal complexing capacity of root exudates. In the P-deficient solutions, no exudation was observed for any of the four plants; consequently, no Cu binding occurred. When P was present in the nutrient solutions, the plant exudates displayed differing abilities to complex Cu. No difference was detected in the binding capacity of the dog daisy or cornflower, and the blank [heavy metal... |
| Tipo: Journal Article |
Palavras-chave: SOLUTION NUTRITIVE; CAPACITE DE LIAISON; SCIENCES DU SOL; ECOPHYSIOLOGIE VEGETALE; PLANTE; EXSUDAT; CUIVRE; ELEMENT METALLIQUE; ELEMENT TRACE; CULTURE HYDROPONIQUE; RELATION PLANTE SOL. |
| Ano: 2001 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0300033064095630&uri=/notices/prodinra1/2010/12/ |
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| Fenyo, J.C.; Servant-Duvallet, S.; Vandevelde, M.C.. |
| La chimiotaxonomie des gommmes exsudées par des acacias a été abordée par Anderson à partir des classifications de Bentham et Vassal. Cette approche qualitative a récemment fait l'objet d'une analyse chimiométrique à partir de neuf paramètres physiques et physico-chimiques, essentiellement pour discriminer des échantillons provenant d'espèces proches. Les données bibliographiques concernant 134 exsudats confirment toujours la présence, en proportions variables, des trois sucres neutres, galactose et arbinose majoritaires, et de rhamnose, et également d'acide glucuronique avec son dérivé 4-O-méthylé. Des traces de mannose sont parfois signalées. Les édifices macromoléculaires branchés sont très complexes et seul l'exsudat d'#A. senegal$ a fait l'objet... |
| Tipo: Text |
Palavras-chave: CHIMIOTAXONOMIE; ARBRE; GOMMOSE; EXSUDAT; PROPRIETE PHYSICOCHIMIQUE; GOMME ARABIQUE. |
| Ano: 1998 |
URL: http://www.documentation.ird.fr/hor/fdi:010016083 |
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| Heulin, T.; Guckert, A.; Balandreau, J.. |
| The association of rice seedlings (cv. Delta) with different strains of Azospirillum was studied under monoxenic conditions in the dark. Axenic 3-day-old seedlings were obtained on a C- and N-free medium and inoculated with 6 · 107 bacteria per plant in a closed vial. Seven days later, different components of a carbon budget were evaluated on them and on sterile controls: respired CO2, carbon of shoot and roots, bacterial and soluble carbon in the medium. Two strains (A. lipoferum 4B and A. brasilense A95) isolated from the rhizosphere of rice caused an increase in exudation, + 36% and + 17% respectively compared with sterile control. Shoot carbon incorporation and respiration were reduced by inoculation. A third strain (A. brasilense R07) caused no... |
| Tipo: Journal Article |
Palavras-chave: FIXATION SYMBIOTIQUE DE L'AZOTE; EXSUDAT. |
| Ano: 1987 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9500060598044548&uri=/notices/prodinra1/2010/12/ |
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| Registros recuperados: 19 | |
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