[Effect of culture conditions on growth and adhesion of Bacillus licheniformis].
Adhesion to glass of actively growing cells of the thermophilic Bacillus licheniformis, isolated from the Medyaginskaya test borehole (Yaroslavl' oblast), was studied. The reversible adhesion (RA) manifests itself in a decline of cell density (short of cell lysis) in the liquid culture over the first 20-40 min of growth followed by normal exponential growth. The RA is minimal under favorable growth conditions but increases when cells are transferred to a new medium, especially one with a pH, temperature, salinity, or concentration of Ca2+ ions nonoptimal for the given species. Under unfavorable growth conditions, the adhesion becomes irreversible. The obtained data suggest that RA represents an adaptation mechanism important for population survival.
Rodionova
T A
TA
Yaroslavl' State University, ul. Sovetskaya 14, Yaroslavl', 150000 Russia.
Shekhovtsova
N V
NV
Panikov
N S
NS
Nikolaev
Iu A
IuA
D000222:Adaptation, Physiological; D001407:Bacillus / Q000254:growth & development / Q000502:physiology*; D001422:Bacterial Adhesion; D002118:Calcium; D002413:Cations, Divalent; D005898:Glass; D006863:Hydrogen-Ion Concentration; D012965:Sodium Chloride; D013696:Temperature; D014871:Water Microbiology
D002413:Cations, Divalent; D012965:Sodium Chloride; D002118:Calcium