Regulation via repression: Regulator of symbiosome differentiation (RSD) acts as zone-specific repressor to mediate nodule development - presented by Akanksha Bhardwaj

Regulation via repression: Regulator of symbiosome differentiation (RSD) acts as zone-specific repressor to mediate nodule development

Akanksha Bhardwaj

Akanksha Bhardwaj
Slide at 01:00
Schematic representation of Root Nodule Symbiosis Akanksha Bhardwaj Infection Thread Meristem (ZI) Infection Thread Distal Zone Bacterial Invasion Zone (ZII) Proximal Zone Endocytosis Rhizobia Symbiosome Interzone Interzone (ZII-III) Formation Factor Fixation zone Flavanoids Nitrogen- Fixation 3. Infection thread formation Zone (ZIII) Root Hair 2. Cortical cell divisions Senescence Zone (ZIV) 4. Nodule primordium development Bhardwaj et al.,2022. The Medicago truncatula Genome (pp. 71-90). Cham: Springer International Publishing
1
References
  • 1.
    A. Bhardwaj and S. Sinharoy (2022) Transcriptional Networks in Medicago truncatula: Genomic and Functional Overview During Root Nodule Symbiosis. Compendium of Plant Genomes
Share slide
Summary (AI generated)

Medicago truncatula is a model legume plant with indeterminate nodules divided into four zones: meristem invasion, nitrogen fixation, degradation, and symbiosome formation. In the invasion zone, bacteria are released via infection thread, endocytosed in plant cells, and form symbiosomes. Bacteroids degrade after completing nitrogen fixation in zone III.