Regulation of nodule development by short - and long - distance auxin transport control

Abstract

Nodules are root organs induced by rhizobia on legume roots, following the perception of specific Nod factors by the host.It has been argued that because nodulation emerged recently during evolution, approximately 60 million years ago, it is likely that the mechanisms that regulate nodule development were co-opted from existing developmental processes, most likely those that regulate lateral root development. If nodule development has been modified from the process of lateral root formation, it is likely that similar developmental signals regulate both processes. A key regulator of lateral root development is auxin. It has long been suggested that auxin is also a regulator of nodule development. Show more