For legumes like alfalfa, clover, and soybeans (others like lupines and peanuts form nodules in ... cytoplasm would inhibit the levels of nitrogen fixation in the nodule. Leghemoglobin seems ...

since excess nitrogen can leak into groundwater. But legumes, including beans, lentils, and peanuts, have a trick up their sleeve. They grow special root nodules that house friendly bacteria called ...