Question

what is nod gene?
how it works in nitrogen fixation? ​

Answer 1

Nod gene expression is induced by the presence of certain flavonoids in the soil, which are secreted by the plant to attract the bacteria. ... Nod factors act by inducing changes in gene expression in the legume, most notable the nodulin genes, which are needed for nodule organogenesis.

Besides the nitrogenase enzyme, the nif genes also encode a number of regulatory proteins involved in nitrogen fixation. The nif genes are found in both free-living nitrogen-fixing bacteria and in symbiotic bacteria associated with various plants.

Answer 2

Answer:

Nod gene:

Nod gene expression is induced by the presence of certain flavonoids in the soil, which are secreted by the plant to attract the bacteria.

These bacteria have the ability to fix nitrogen into a form that plants can utilize.