Record ID No. |
130 |
Author(s) |
Kohler J., Caravaca F., Carrasco L., Roldan A. , 2007 |
Affiliation |
Consejo Superior de Investigaciones Cientificas (CSIC), Center Edafol & Biol Aplicada Segura, Dept Soil & Water Conservat, POB 164,Campus Espinardo, Murcia 30100, Spain |
Title |
Interactions between a plant growth-promoting rhizobacterium, an AM fungus and a phosphate-solubilising fungus in the rhizosphere of Lactuca sativa |
Source. Vol.(no):Page |
Applied Soil Ecology. 35(3): |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biological Interaction |
Sub-subjects |
Plant growth promoting rhizo bacteria |
Host |
Lettuce |
Organism |
Glomus intraradices , Bacillus subtilis, Aspergillus niger, Rhizobacterium |
Country |
Spain, Europe |
Abstracts |
This study evaluated the interactions between the inoculation with an arbuscular mycorrhizal fungus, Glomus intraradices Schenck & Smith, a plant growth-promoting rhizobacterium, Bacillus subtilis, and a filamentous soil fungus, Aspergillus niger, with respect to their effects on growth of lettuce plants and on indicators of biological soil quality (microbial biomass C, water-soluble C and carbohydrates and dehydrogenase, urease, acid phosphatase and benzoyl argininamide hydrolyzing protease activities). Watersoluble carbohydrates and microbial biomass were increased only in the rhizosphere soil of G. intraradices-plants. Rhizosphere soil from all microbial inoculation treatments had significantly higher dehydrogenase activity than the control soil, particularly in the soil inoculated with B. subtilis (about 21% higher than control soil). Inoculation with A. niger or B. subtilis increased significantly the urease, protease and phosphatase activities of the rhizosphere soil of the lettuce plants. The foliar P and K contents increased significantly with the B. subtilis or G. intraradices inoculation, alone or in combination. The most effective co-inoculation was observed in the combined treatment of inoculation with G. intraradices and B. subtilis, which synergistically increased plant growth compared with singly inoculated (about 77% greater with respect to the control plants |