Nitrogen fixation in legumes

Nitrogen fixation in legumes:

It is the commonest kind of symbiotic nitrogen fixation that has been highly studied. A soil bacterium termed as Rhizobium infects roots of leguminous plants (belonging to Family Leguminosae) and made the root nodules.

613_nodulated root.jpg

 Figure: Nodulated root

These are included in nitrogen fixation. The bacteria living in the soil go into the root hair and penetrate the root cortex via an infection thread. Whenever the bacteria enter the cortical cells of roots, the latter acquire stimulated to divide vigorously and form nodules on the root. The bacteria come to engage the nodules, and at this phase lack a rigid cell wall being termed as bacteroids. These make utilizations of the food substances of the root cells and secrete a pinkish pigment termed as leg-hemoglobin that is an oxygen carrier similar to hemoglobin.

777_root nodule.jpg

Figure: Mode of development of root nodule

The Rhizobia in the form of bacteroides include the enzyme nitrogenase that is responsible for the fixation of Nitrogen therefore benefitting the host plant. Leghemoglobin is assumed to protect the nitrogenase enzyme as it can function merely under anaerobic conditions.

Latest technology based Biology Online Tutoring Assistance

Tutors, at the, take pledge to provide full satisfaction and assurance in Mineral Nutrition homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Mineral Nutrition, project ideas and tutorials. We provide email based Mineral Nutrition homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Mineral Nutrition. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Biology homework help and assignment help services. They use their experience, as they have solved thousands of the Biology assignments, which may help you to solve your complex issues of Mineral Nutrition. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.

2015 ┬ęTutorsGlobe All rights reserved. TutorsGlobe Rated 4.8/5 based on 34139 reviews.