Review of research advancements on the molecular basis and regulation of symbiotic nodulation of legumes

The symbiosis between leguminous plants and rhizobia leads to the formation of a novel root organ,the nodule.In mature nodules,rhizobia provide the host plant with ammonium,which is produced through bacterial nitrogen fixation.The symbiotic interactions involve the perception of bacterial signaling factors called Nod factors (NFs) by plant host,the NF signaling pathway,the formation of infection threads and the development of nodule in the...