Plant Gene Expression during Stem Nodule development on Sesbania rostrata

摘要: In Rhizobium—legume interactions, nitrogen-fixing nodules typically develop on the roots of a specific host. On few legumes, also stem are formed. A particularly well studied example is Sesbania rostrata, an annual leguminous plant from West-Africa. As adaptation to growth in wetland soils, S. rostrata carries dormant, adventitious root primordia vertical rows all along its stem. These into upon infection with appropriate microbial partner, such as Azorhizobium caulinodans (Dreyfus et al., 1988). Root nodulation takes place at lateral bases (Ndoye 1995). Both and occur by intercellular invasion lead formation mature determinate nodules.