The Pattern of Secreted Molecules During the Co-Inoculation of Alfalfa Plants With Sinorhizobium meliloti and Delftia sp. strain JD2: An Interaction That Improves Plant Yield

• DOI: 10.1094/mpmi-08-14-0229-r
• Publication Date: 2014-10-29T20:01:17Z
• Authors: M. A. Morel; C. Cagide; M. A. Minteguiaga; M. S. Dardanelli; S. Castro-Sowinski
• Keywords: Sinorhizobium meliloti; Strain (injury)

Delftia sp. strain JD2 is a plant-growth-promoting bacterium that enhances legume nodulation and growth, acting as nodule-assisting during the co-inoculation of plants with rhizobial strains. In this work, we evaluate how alfalfa Sinorhizobium meliloti U143 increases plant yield under greenhouse conditions analyze pattern secreted bioactive compounds which may be involved in microbe-plant communication. The chemical composition extracellular cultures (EC) produced hydroponic (collected 4, 7, 14 days after bacterial treatment) were characterized using different chromatographic elucidation techniques. addition, assessed effect irrigation cell-free EC, experiments, would have on yield. Results showed increased shoot root matter, suggesting U143-JD2 might beneficial agricultural practice. secondary metabolites among treatments important differences. Qualitative quantitative changes phenolic (including flavonoids), organic acids, volatile detected early interaction, production some molecules positively affects association. Finally, co-inoculated EC over agronomic expectations. This attributed to incorporated irrigation.