Volume 1. Section 1: General introduction -- Section 2: Overview chapters -- Section 3:Medicago truncatula plant development -- Section 4: Biosynthesis of natural products -- Section 5: Stress and medicago truncatula -- Section 6: The Medicago truncatula-Sinorhizobium meliloti symbiosis -- Section 7: Symbiosis of Medicago truncatula with arbuscular mycorrhiza -- Section 8: The common symbiotic signalingpathway (CSSP or SYM). VOLUME II. Section 9: Infection events in the Rhizobium-legume symbiosis -- Section 10: Hormones and the rhizobial and mycorrhizal symbioses -- Section 11: Autoregulation of nodule numbers(AON) in Medicago truncatula -- Section 12: Genetics and genomics of Medicago truncatula -- Section 13: Medicago truncatula databases and computer programs -- Section 14: Medicago truncatula and transformation