Transcriptional regulators of legume-rhizobia symbiosis: nuclear factors Ys and GRAS are two for tango

RÍPODAS C; CLUA J, BATTAGLIA M; BAUDIN M, NIEBEL A; ZANETTI ME, BLANCO FA

Plant Signaling and Behaviour

Taylor & Francis

Año: 2014

1559-2324

Transcription factors are DNA binding proteins thatregulate gene expression. The nitrogen fixing symbiosisestablished between legume plants and soil bacteria isa complex interaction, in which plants need to integratesignals derived from the symbiont and the surroundingenvironment to initiate the developmental program ofnodule organogenesis and the infection process. Severaltranscription factors that play critical roles in these processeshave been reported in the past decade, including proteinsof the GRAS and NF-Y families. Recently, we reported thecharacterization of a new GRAS domain containing-proteinthat interacts with a member of the C subunit of the NF-Yfamily, which plays an important role in nodule developmentand the progression of bacterial infection during thesymbiotic interaction. The connection between transcriptionfactors of these families highlights the significance ofmultimeric complexes in the fabulous capacity of plants tointegrate and respond to multiple environmental stimuli.