Related Experiment Video
Updated: May 4, 2026

Plant Promoter Analysis: Identification and Characterization of Root Nodule Specific Promoter in the Common Bean
Published on: December 23, 2017
Molecular basis of the establishment and functioning of a N2-fixing root nodule
1F.A. Janssens Laboratory of Genetics, Catholic University of Leuven, Willem de Croylaan 42, B-3001, Heverlee, Belgium.
Abstract:
Compatible interactions between rhizobia and their leguminous host plant(s) culminate in the formation of a new plant organ, the root nodule. Within this structure, the bacteria reduce N2 to NH3 which is then assimilated by the plant. The formation of a N2-fixing nodule requires a continuous process of two-way signalling and cellular recognition between the prokaryote and the plant. Such a process involves the sequential activation and/or repression of host plant- and bacteria-encoded genes. Finally, functioning of a legume-nodule necessitates not only the adaptation of plant and bacterial carbon, nitrogen and oxygen metabolism to an environment allowing N2-fixation to occur, but also requires a tight co-ordination and integration of these plant and bacterial metabolic processes.
More Related Videos
13:37Generation of Composite Plants in Medicago truncatula used for Nodulation Assays
Published on: March 27, 2011
20:01Single-plant, Sterile Microcosms for Nodulation and Growth of the Legume Plant Medicago truncatula with the Rhizobial Symbiont Sinorhizobium meliloti
Published on: October 1, 2013
Related Concept Videos
The Roles of Bacteria and Fungi in Plant Nutrition
Inorganic Nitrogen Assimilation
Microbe-Plant Interactions
Overview of Nitrogen Metabolism
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
Carbon-dioxide Fixation
Microbial Interactions: Cooperation