Abstract
This study assesses the influence of saccharides in the rhizodeposition on the phosphate solubilizing ability of rhizosphere bacteria. Water-soluble rhizodeposits were analysed of 14C labelled pea plants (Pisum sativum) which were grown at two different levels of P-nutrition. The sugars produced were fed in vitro either as single compounds or as synthetic mixtures to three bacterial strains and the ability of the bacteria to mobilize Ca3(PO4)2 was measured. The ability of Pseudomonas fluorescens (PsIA12) to dissolve tertiary calcium phosphate was lower with sugars of the P-deficient plants than with glucose. On the other hand, sugars of P-deficient plants increased the P-mobilizing ability of Pantoea agglomerans (D 5/23) and Azospirillum sp. (CC 322) considerably. The production of different carboxylic acids was responsible for these effects.
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Deubel A, Gransee A and Merbach W 2000 Transformation of organic rhizodepositions by rhizosphere bacteria and its influence on the availability of tertiary calcium phosphate. J. Plant Nutr. Soil Sci. 163, 387–392.
Gransee A and Wittenmayer L 2000 Qualitative and quantitative analysis of water-soluble root exudates in relation to plant species and development. J. Plant Nutr. Soil Sci. 163, 381–385.
Merbach W, Mirus E, Knof G, Remus R, Ruppel S, Russow R, Gransee A and Schulze J 1999 Release of carbon and nitrogen compounds by plant roots and their possible ecological importance. J. Plant Nutr. Soil Sci. 162, 373–383.
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Deubel, A., Gransee, A., Merbach, W. (2007). Tricalcium-phosphate solubilizing efficiency of rhizosphere bacteria depending on the P-nutritional status of the host plant. In: Velázquez, E., RodrÃguez-Barrueco, C. (eds) First International Meeting on Microbial Phosphate Solubilization. Developments in Plant and Soil Sciences, vol 102. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5765-6_39
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DOI: https://doi.org/10.1007/978-1-4020-5765-6_39
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Publisher Name: Springer, Dordrecht
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Online ISBN: 978-1-4020-5765-6
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