NIN—at the heart of NItrogen-fixing Nodule symbiosis
Lisha Shen, Jian Feng
Abstract
Legumes and actinorhizal plants establish symbiotic relationships with nitrogen-fixing bacteria, resulting in the formation of nodules. Nodules create an ideal environment for nitrogenase to convert atmospheric nitrogen into biological available ammonia. NODULE INCEPTION (NIN) is an indispensable transcription factor for all aspects of nodule symbiosis. Moreover, NIN is consistently lost in non-nodulating species over evolutions. Here we focus on recent advances in the signaling mechanisms of NIN during nodulation and discuss the role of NIN in the evolution of nitrogen-fixing nodule symbiosis.
Topics & Concepts
NitrogenaseNitrogen fixationSymbiosisNodule (geology)Actinorhizal plantBiologyFrankiaRoot noduleBotanyBacteriaGeneticsPaleontologyLegume Nitrogen Fixing SymbiosisAgronomic Practices and Intercropping SystemsPlant nutrient uptake and metabolism