MIR2111-5 locus and shoot-accumulated mature miR2111 systemically enhance nodulation depending on HAR1 in Lotus japonicus

Abstract

In legumes, shoot-derived signals regulate rhizobial symbiosis to balance the benefits of N2 fixation with the energy costs of nodule production. Here Okuma et al. show that Lotus miR2111 is produced in the leaves from the MIR2111-5 locus and is a graft-transmissable signal that enhances nodulation in the roots.