Effect of Arbuscular Mycorrhizal Fungi and Phosphate-Solubilizing Bacteria Consortia Associated with Phospho-Compost on Phosphorus Solubilization and Growth of Tomato Seedlings (Solanum lycopersicum L.) |
| |
Authors: | Sanae El Maaloum Alae Elabed Zainab El Alaoui-Talibi Abdelilah Meddich Abdelkarim Filali-Maltouf Allal Douira |
| |
Affiliation: | 1. Laboratoire De Biotechnologie Et Bio-ingénierie Moléculaire, Faculté Des Sciences Et Techniques, Université Cadi Ayyad, Marrakech, Moroccosanae.elmaaloum@gmail.com;3. Laboratoire De Biotechnologie Et Bio-ingénierie Moléculaire, Faculté Des Sciences Et Techniques, Université Cadi Ayyad, Marrakech, Morocco;4. Laboratoire De Microbiologie Et Biologie Moléculaire, Faculté Des Sciences, Université Mohammed V, Rabat, Morocco;5. Laboratoire De Botanique Biotechnologie Et De Protection Des Plantes, Faculté Des Sciences, Université Ibn Tofail, Kenitra, Morocco |
| |
Abstract: | ABSTRACTThe exploitation of phosphate mines generates an important quantity of phosphate sludge that remains accumulated and not valorized. In this context, composting with organic matter and rhizospheric microorganisms offers an interesting alternative and that is more sustainable for agriculture. This work aims to investigate the synergetic effect of arbuscular mycorrhizal fungi (AMF), phosphate-solubilizing bacteria (PSB) and phospho-compost (PC), produced from phosphate-laundered sludge and organic wastes, and their combination on plant growth, phosphorus solubilization and phosphatase activities (alkaline and acid). Inoculated mycorrhizae and bacteria strains used in this study were selected from plant rhizosphere grown on phosphate-laundered sludge. Significant (p < .05) increases in plant growth was observed when inoculated with both consortia and PC (PC+ PSB+ AMF) similar to those recorded in plants amended with chemical fertilizer. Tripartite inoculated tomato had a significantly (p < .05) higher shoot height; shoot and root dry weight, root colonization and available P content, than the control. Co-inoculation with PC and AMF greatly increased alkaline phosphatase activity and the rate of mycorrhizal intensity. We conclude that PC and endophytic AMF and PSB consortia contribute to a tripartite inoculation in tomato seedlings and are coordinately involved in plant growth and phosphorus solubilization. These results open up promising prospects for using formulate phospho-compost enriched with phosphorus-solubilizing microorganisms (PSM) in crop cultivation as biofertilizers to solve problems of phosphate-laundered sludge accumulation. |
| |
Keywords: | Biofertilizer phosphate-laundered sludge phosphatases rhizospheric microorganisms root colonization |
|
|