Nitrogen Control in Cyanobacteria
Year: 2001
Type: review
Abstract: Nitrogen is a quantitatively important bioelement which is incorporated into the biosphere through assimilatory processes carried out by microorganisms and plants. Numerous nitrogen-containing compounds can be used by different organisms as sources of nitrogen. These include, for instance, inorganic ions like nitrate or ammonium and simple organic compounds like urea, amino acids, and some nitrogen-containing bases. Addi-tionally, many bacteria are capable of fixing N2. Nitrogen con-trol is a phenomenon that occurs widely among microorgan-isms and consists of repression of the pathways of assimilation of some nitrogen sources when some other, more easily assim-ilated source of nitrogen is available to the cells. Ammonium is the preferred nitrogen source for most bacteria, but glutamine is also a very good source of nitrogen for many microorgan-isms. Two thoroughly investigated nitrogen control systems are
Source: Journal of Bacteriology
Language: English
Subfield: Genetics
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W2125993411