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Titolo:
OSMOADAPTATION OF THIOCAPSA-ROSEOPERSICINA OP-1 IN BATCH AND CONTINUOUS-CULTURE - ACCUMULATION OF K-STRESS( AND SUCROSE IN RESPONSE TO OSMOTIC)
Autore:
WELSH DT; HERBERT RA;
Indirizzi:
UNIV DUNDEE,DEPT BIOL SCI DUNDEE DD1 4HN SCOTLAND
Titolo Testata:
FEMS microbiology, ecology
fascicolo: 2, volume: 13, anno: 1993,
pagine: 151 - 157
SICI:
0168-6496(1993)13:2<151:OOTOIB>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
SHELTERED BEACHES; ESCHERICHIA-COLI; ORKNEY-ISLANDS; ESTUARINE SEDIMENTS; SULFATE REDUCTION; GENE-EXPRESSION; MASS BLOOMS; SCAPA FLOW; BACTERIA; MARINE;
Keywords:
THIOCAPSA ROSEOPERSICINA; OSMOADAPTATION; COMPATIBLE SOLUTE; SUCROSE; POTASSIUM ION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
D.T. Welsh e R.A. Herbert, "OSMOADAPTATION OF THIOCAPSA-ROSEOPERSICINA OP-1 IN BATCH AND CONTINUOUS-CULTURE - ACCUMULATION OF K-STRESS( AND SUCROSE IN RESPONSE TO OSMOTIC)", FEMS microbiology, ecology, 13(2), 1993, pp. 151-157

Abstract

Increasing growth medium NaCl concentration inhibited the growth of Thiocapsa roseopersicina OP-1 due to both an increase in the lag phase of the growth cycle and a reduction in specific growth rate. Addition of 0.050% w/v acetate to the growth medium stimulated growth at all NaCl concentrations, but this stimulation was greatest at supra-optimal NaCl concentrations. Optimal growth under all conditions tested in both batch and continuous culture was recorded at a salt concentration of0.3 M NaCl. The intracellular concentrations of both K+ and sucrose increased linearly with increasing growth medium NaCl concentration indicating an osmoregulatory role for these solutes. Time courses of osmoadaptation in batch culture demonstrated a biphasic response to osmotic stress. The initial phase consisted of a rapid accumulation (within 30 min) of K+ from the growth medium. This was followed by a slower synthesis of sucrose which partially replaced intracellular K+ during the second phase of osmoadaptation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 10:44:38