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SALINITY EFFECTS ON THE MAXIMUM HYDROSTATIC PRESSURE FOR GROWTH OF THE MARINE PSYCHROPHILIC BACTERIUM, VIBRIO MARINUS 1
Author(s) -
Palmer Douglas S.,
Albright Lawrence J.
Publication year - 1970
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1970.15.3.0343
Subject(s) - hydrostatic pressure , psychrophile , salinity , vibrio , seawater , basal (medicine) , bacteria , growth medium , chemistry , biology , ecology , endocrinology , thermodynamics , physics , genetics , insulin
In nondefined basal medium containing 35 ‰ synthetic seawater salts Vibrio marinus MP‐1 reproduces at hydrostatic pressures of 422 ± 13.5 and 280 ± 13.5 atm at 9 and 4C; in defined basal medium containing 35 ‰ NaCl, these maximums are 422 ± 6.8 and 327 ± 6.8 atm at 9 and 4C. Decreasing the NaCI concentration results in a corresponding decrease in the maximum hydrostatic pressure at which these cells divide: at 8 ‰ NaCl, cell division is inhibited above 88 ± 6.8 and 61 ± 6.8 atm at 9 and 4C. The relative order of effectiveness for the substitution of the Na + requirement, in a defined basal medium containing 8 ‰ NaCl, is Na + > K + > NH 4 + . The relative order of effectiveness for the substitution of the Cl − requirement, in the same basal medium, is SO 4 2− , PO 4 3− , Cl − > Br − > NO 3 − . The relative ranking of these ions depends on the NaCl content of the basal medium.