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Titolo:
A PROMINENT ROLE FOR GLUCOSYLGLYCEROL IN THE ADAPTATION OF PSEUDOMONAS-MENDOCINA-SKB70 TO OSMOTIC-STRESS
Autore:
POCARD JA; SMITH LT; SMITH GM; LERUDULIER D;
Indirizzi:
UNIV NICE,BIOL VEGETALE & MICROBIOL LAB,CNRS,URA 1114,SOPHIA ANTIPOLIS PARC VALROSE F-06108 NICE 02 FRANCE UNIV CALIF DAVIS,DEPT AGRON & RANGE SCI DAVIS CA 95616 UNIV CALIF DAVIS,DEPT FOOD SCI & TECHNOL DAVIS CA 95616
Titolo Testata:
Journal of bacteriology
fascicolo: 22, volume: 176, anno: 1994,
pagine: 6877 - 6884
SICI:
0021-9193(1994)176:22<6877:APRFGI>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORGANIC SOLUTE ACCUMULATION; GLYCINE BETAINE; OSMOREGULATORY SOLUTES; HALOPHILIC EUBACTERIA; COMPATIBLE SOLUTES; CYANOBACTERIA; ADJUSTMENT; TREHALOSE; STUTZERI; MARINE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
49
Recensione:
Indirizzi per estratti:
Citazione:
J.A. Pocard et al., "A PROMINENT ROLE FOR GLUCOSYLGLYCEROL IN THE ADAPTATION OF PSEUDOMONAS-MENDOCINA-SKB70 TO OSMOTIC-STRESS", Journal of bacteriology, 176(22), 1994, pp. 6877-6884

Abstract

The mechanism of osmoadaptation in a salt-tolerant (1.2 M NaCl) bacterial isolate identified as Pseudomonas mendocina (N. J. Palleroni, M. Doudoroff, R. Y. Stanier, R. E. Solanes, and R. Mandel, J. Gen. Microbiol. 60:215-231, 1970) was investigated. In response to osmotic stress, this species accumulated a number of compatible solutes, the intracellular levels of,which depended on both the osmolarity and the ionic composition of the growth medium. Glucosylglycerol [alpha-D-glucopyranosyl-alpha-(1-->2)-glycerol], N-acetylglutaminylglutamine amide, and L-alpha-glutamate were the major compatible solutes accumulated via de novo biosynthesis. Trehalose was also accumulated, but only in cells grown in the presence of high concentrations of sulfate or phosphate ions. Glycine betaine was accumulated only when supplied exogenously to cells grown at high osmolarity, and its accumulation caused a significant depletion of the intracellular pools of glucosylglycerol and glutamate. Glucosylglycerol was also found to accumulate in the type strainsof P. mendocina and P. psendoalcaligenes. This is the first report demonstrating the pivotal role of glucosylglycerol in osmoadaptation in a nonphotosynthetic microorganism.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 03:36:10