Growth promotion and flowering induction in mango (Mangifera indica L. cv "Ataulfo") trees by Burkholderia and Rhizobium inoculation: morphometric, biochemical, and molecular events.
Santos-Villalobos S. de los, Folter S. de, Délano-Frier J. P., Gómez-Lim M. A., Guzmán-Ortiz D. A., Peña-Cabriales J. J.
Author Affiliation: Centro de Investigación y de Estudios Avanzados-IPN (CINVESTAV), Unidad Irapuato. Km. 9.6 Libramiento Norte, Carretera Irapuato-León, C.P. 36500, Irapuato, GTO, Mexico.
Journal of Plant Growth Regulation 32 : 615-627
Abstract : Inoculation of mango trees with Burkholderia caribensis XV and Rhizobium sp. XXV led to mango growth promotion (dry biomass increased in root 89%, stem 34%, leaves 51%, and foliar area 53%), floral fate (floral buds 100%), and increased number of flowers (100%). Nitrogen content in leaves was similar in inoculated and noninoculated trees, around 1.4% (optimal condition for floral induction). The total foliar nitrogen content increased significantly (56%) when the microbial inoculation treatment was applied. In addition, the initial content of sucrose, glucose, and fructose in leaves was higher in the microbial inoculation treatment trees but decreased during the evaluated period. The sucrose content in the noninoculated trees presented similar dynamics compared to the microbial inoculation treatment trees, but glucose and fructose showed increased values compared to those of the microbial inoculation treatment. FLOW