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Low Soil Phosphorus Availability Increases Acid Phosphatases Activities and Affects P Partitioning in Nodules, Seeds and Rhizosphere of Phaseolus vulgaris

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  • Adnane Bargaz

    ()
    (Team of Plant Biotechnology and Agrophysiology of Symbiosis, Faculty of Sciences and Techniques, PO Box 549, Marrakech 40000, Morocco
    National Institute for Agronomical Research, UMR Functional Ecology, Soils Biogeochemistry & Agroecosystems, 2 Place Viala, Montpellier F34060, France
    Grains Legumes Program, Field Corps Laboratory, National Institute for Agronomical Research of Tunisia, rue Hédi Karray, Ariana 2080, Tunisia)

  • Mustapha Faghire

    ()
    (Team of Plant Biotechnology and Agrophysiology of Symbiosis, Faculty of Sciences and Techniques, PO Box 549, Marrakech 40000, Morocco)

  • Neila Abdi

    ()
    (Grains Legumes Program, Field Corps Laboratory, National Institute for Agronomical Research of Tunisia, rue Hédi Karray, Ariana 2080, Tunisia)

  • Mohamed Farissi

    ()
    (Team of Plant Biotechnology and Agrophysiology of Symbiosis, Faculty of Sciences and Techniques, PO Box 549, Marrakech 40000, Morocco)

  • Bouaziz Sifi

    ()
    (Grains Legumes Program, Field Corps Laboratory, National Institute for Agronomical Research of Tunisia, rue Hédi Karray, Ariana 2080, Tunisia)

  • Jean-Jacques Drevon

    ()
    (National Institute for Agronomical Research, UMR Functional Ecology, Soils Biogeochemistry & Agroecosystems, 2 Place Viala, Montpellier F34060, France)

  • Mohamed Cherkaoui Ikbal

    ()
    (Regional Office of Agricultural Development of Haouz, Avenue Hassan II GUELIZ 2411, Marrakech 40000, Morocco)

  • Cherki Ghoulam

    ()
    (Team of Plant Biotechnology and Agrophysiology of Symbiosis, Faculty of Sciences and Techniques, PO Box 549, Marrakech 40000, Morocco)

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    Abstract

    The effect of phosphorus (P) deficiency on phosphatases activities in N 2-fixing legumes has been widely studied in hydroponic culture. However, the response of acid phosphatase (APase) and phytase in rhizosphere, nodules and seeds of Phaseolus vulgaris to low soil’s P-availability is not yet fully understood. In this study, six genotypes of N 2-fixing P. vulgaris were grown under contrasting soil P-availabilities; i.e. , low (4.3 mg P kg −1 ) and sufficient (16.7 mg P kg −1 ) in the Haouz region of Morocco. At flowering and maturity stages, plants were harvested and analyzed for their phosphatases activities, growth and P content. Results show that, low P decreased nodulation, growth, P uptake and N accumulation in all the genotypes, but to a greater extent in the sensitive recombinant inbreed line 147. In addition, while seed P content was slightly reduced under low P soil; a higher P was noticed in the Flamingo and Contender large seeded-beans (6.15 to 7.11 mg g −1 ). In these latter genotypes, high APase and phytase activities in seeds and nodules were associated with a significant decline in rhizosphere’s available P. APase activity was mainly stimulated in nodules, whereas phytase activity was highly induced in seeds (77%). In conclusion, the variations of APase and phytase activities in nodules and seeds depend on genotype and can greatly influence the internal utilization of P, which might result in low P soil tolerance in N 2-fixing legumes.

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    Bibliographic Info

    Article provided by MDPI, Open Access Journal in its journal Agriculture.

    Volume (Year): 2 (2012)
    Issue (Month): 2 (June)
    Pages: 139-153

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    Handle: RePEc:gam:jagris:v:2:y:2012:i:2:p:139-153:d:18302

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    Related research

    Keywords: acid phosphatases; nodules; phytase; low P soil; Phaseolus vulgaris ; seeds;

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