Wednesday, November 30, 2011

How to Buy Azotobacter

Azotobacter is a genus of usually motile, oval or spherical bacteria that form thick-walled cysts, and may produce large quantities of capsular slime. Azotobacter Vinelandii is a free-living bacterium that can fix atmosferic nitrogen into the soil, being a great source to obtain a natural biofertilizer. It can be used in the cultivation of most crops. Beyond Azotobacter’s use as a model organism it has biotechnological applications. Azotobacter is an organism that lives in soil. It can fix nitrogen. Unlike rhizobium, azotobacter is free-living.
Azotobacter naturally fixes atmospheric nitrogen in the rhizosphere. There are different strains of Azotobacter each has varied chemical, biological and other characters. However, some strains have higher nitrogen fixing ability than others. Polyhydroxybutyrate is produced under certain conditions. Azotobacter are Gram-negative bacteria.
Azotobacter is an aerobic, free-living soil microbe which fixes nitrogen from the atmosphere. It is a great source of nitrogen to meet the needs of crops because also has the capabilities to cause a rejuvenation of soil microbiology to tap out the biological fixation of nitrogen. This cyst is a resting stage for this organism that allows it to survive in harsh conditions. This cyst has the same function as endospores in other bacteria. Examples are its use for alginate production and for nitrogen production in batch fermentations. Azotobacter nitrogenase is oxygen-sensitive, but it is believed that the extremely high respiration rate of Azotobacter (possibly the highest of any living organism) soaks up free oxygen within the cells and protects the nitrogenase.
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