Nitrogen fixing nodules

Vedam, V., Haynes, J.G., Kannenberg, E.L., Carlson, R.W., Sherrier, D.J. A Rhizobium leguminosarum lipopolysaccharide lipid A mutant induces nitrogen-fixing nodules with delayed and defective bacteroid formation. Mol Plant-Microbe Interact 17 (2004) 283-291. 

Leghemoglobin, first isolated in 1938 by J. Pietz, is a hemoglobin found in legume nitrogen-fixing nodules and is a mixture consisting of two major components, a and c and two minor components, b and d, with c and d having two... 

Figure E42-1. Nitrogen fixing nodules on soybean roots.

Hemoglobins are the most evolutionarily diverse family of dioxygen carriers. They are found in some plants (e.g., leghemoglobin in the nitrogen-fixing nodules of legumes), many invertebrates (including some insect larvae), crustaceans, molluscs (especially bivalves and snails), almost all annelid worms, and in all vertebrates with one possible exception, the Antarctic fish Cyclostomata. 

Chitosan and chitosan oligomer solution coated soybean seeds for 30 min before plantation (Dzung 2002). Effect of chitosan and chitosan oligomer (1-2 kDa) on the number of nitrogen fixing nodules is shown in Table 42.3. 

Effect of Chitosan and Chitosan Oligomer on the Number of Nitrogen Fixing Nodules of Soybean... 

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