Ferredoxin plays a crucial role in the nitrogen fixation process within legume seeds and nodules. It serves as a key electron carrier protein that facilitates the transfer of electrons during biological nitrogen fixation, where atmospheric nitrogen (N₂) is converted into a biologically usable form (NH₃). In legume seeds specifically, ferredoxin works closely with nitrogenase enzyme complexes and helps maintain the electron flow necessary for nitrogen assimilation and amino acid synthesis. This iron-sulfur protein is particularly important during seed development and maturation, as it supports the efficient storage of nitrogen in the form of proteins that will later be used during germination. Additionally, ferredoxin participates in other redox reactions within seed tissues, contributing to overall seed metabolism and energy transfer processes.

Ashwani Kumar

Ferredoxin plays an important role in plant immunity. It can be important for protection of germinating seedlings.

See:

Lin, Yi-Hsien, et al. "C-terminal region of plant ferredoxin-like protein is required to enhance resistance to bacterial disease in Arabidopsis thaliana." Phytopathology 101.6 (2011): 741-749.

Lin, Yi-Hsien, et al. "Plant ferredoxin-like protein (PFLP) outside chloroplast in Arabidopsis enhances disease resistance against bacterial pathogens." Plant Science 179.5 (2010): 450-458.

Su, Yu-Han, Chuan-Yu Hong, and Yi-Hsien Lin. "Plant ferredoxin-like protein enhances resistance to bacterial soft rot disease through PAMP-triggered immunity in Arabidopsis thaliana." European journal of plant pathology 140 (2014): 377-384.