Osmoregulation of bacteria.

Osmoregulation in Halophilic Bacteria

Halophilic bacteria and their compatible solutes – osmoregulation and potential applications

Halophilic bacteria grow over an extended range of salt concentrations. Their metabolic patterns are distinct compared to their terrestrial counterparts and obligate halophiles. The possibility of rapid adjustment to changes in the external salt concentration makes them potential candidates for bioprocessing. Halophilic bacteria produce enzymes, metabolites, solutes, exopolysaccharides and pigm...

Aedes Aegypti: Energetics of Osmoregulation

1. Oxygen consumption of A. aegypti larvae, about 210 fi\ g" tissue wet weight h, does not change when the salinity of the environment is changed. 2. The number of mitochondria in the anal papillae, a salt-absorbing epithelium, increases as the external medium is diluted. 3. There is no difference in oxygen consumption between isolated anal papillae in o, 2 and 20% sea water. The papillae repre...

Osmoregulation in marine mammals.

Osmoregulation in marine mammals has been investigated for over a century; however, a review of recent advances in our understanding of water and electrolyte balance and of renal function in marine mammals is warranted. The following topics are discussed: (i) kidney structure and urine concentrating ability, (ii) sources of water, (iii) the effects of feeding, fasting and diving, (iv) the renal...

Osmoregulation in Rhodobacter sphaeroides.

Betaine (N,N,N-trimethylglycine) functioned most effectively as an osmoprotectant in osmotically stressed Rhodobacter sphaeroides cells during aerobic growth in the dark and during anaerobic growth in the light. The presence of the amino acids L-glutamate, L-alanine, or L-proline in the growth medium did not result in a significant increase in the growth rate at increased osmotic strengths. The...