Bargaz, Adnane
- Cadi Ayyad University (University of Marrakesh)
- National Institute of Agricultural Research (INRA)
Abstract
The improvement of common bean production requires the selection of effective rhizobia strains andPhaseolus vulgarisgenotypes adapted to available soil phosphorus limitations. The interactions between bean genotypes and rhizobia were studied in hydroponic culture using six genotypes and four strains, CIAT899 as reference and three strains isolated from nodule of farmer's fields in the Marrakech region. The phosphorus (P) sub-deficiency caused a significant reduction on shoot biomass in some bean genotype-rhizobia combinations. Nodule biomass is significantly more reduced under P limitation for several combinations tested. Bean plants inoculated with these local rhizobial strains showed higher nodulation and an increase of nodules phytase and phosphatase activities under phosphorus sub-deficiency especially for RhM11 strain. It was concluded that the studied bean-rhizobia symbiosis differ in their adaptation to phosphorus sub-deficiency and the nodule phosphatases and phytases activities may constitute a strategy of nodulated bean plants to adapt their nitrogen fixation to P deficiency.
Keywords
interactions; Phaseolus vulgaris; phosphatase; phosphorus; phytase; rhizobia
Published in
Journal of Plant Nutrition
2012, volume: 35, number: 10, pages: 1477-1490
SLU Authors
UKÄ Subject classification
Biochemistry
Molecular Biology
Publication identifier
- DOI: https://doi.org/10.1080/01904167.2012.689908
Permanent link to this page (URI)
https://res.slu.se/id/publ/51450