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Titolo:
Responses of Gram-negative bacteria to certain environmental stressors
Autore:
Ramos, JL; Gallegos, MT; Marques, S; Ramos-Gonzalez, MI; Espinosa-Urgel, M; Segura, A;
Indirizzi:
CSIC, Estac Expt Zaidin, Dept Plant Biochem, E-18008 Granada, Spain CSIC Granada Spain E-18008 n, Dept Plant Biochem, E-18008 Granada, Spain
Titolo Testata:
CURRENT OPINION IN MICROBIOLOGY
fascicolo: 2, volume: 4, anno: 2001,
pagine: 166 - 171
SICI:
1369-5274(200104)4:2<166:ROGBTC>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
PSEUDOMONAS-PUTIDA DOT-T1E; COLD-SHOCK PROTEINS; ESCHERICHIA-COLI; DESICCATION TOLERANCE; BACILLUS-SUBTILIS; STATIONARY-PHASE; MESSENGER-RNA; POSTTRANSCRIPTIONAL CONTROL; TRANSCRIPTION FACTOR; ORGANIC-SOLVENTS;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
50
Recensione:
Indirizzi per estratti:
Indirizzo: Ramos, JL CSIC, Estac Expt Zaidin, Dept Plant Biochem, Prof Albareda 1, E-18008 Granada, Spain CSIC Prof Albareda 1 Granada Spain E-18008 18008 Granada, Spain
Citazione:
J.L. Ramos et al., "Responses of Gram-negative bacteria to certain environmental stressors", CURR OPIN M, 4(2), 2001, pp. 166-171

Abstract

Bacteria in nature are exposed to variations in temperature and are affected by the availability of nutrients and water and the presence of toxic molecules. Their reactions to these changes require a series of rapid adaptiveresponses, Although transcriptional regulation is of primary importance inthese responses, translational regulation and even activation of ' silenced ' enzymes are critical for survival in changing environments. Bacteria have developed a series of mechanisms at the membrane structure level to copewith high concentrations of solvents. In addition, solvent-tolerant strains express highly effective efflux pumps to remove solvents from the cytoplasm. Desiccation tolerance is based on the synthesis and accumulation of osmoprotectants together with changes in fatty acid composition to preserve membrane structure. Both cold shock and heat shock responses are mainly regulated at a posttranscriptional level, translation efficiency in the case of cold shock and mRNA half-life and sigma (32) stability in the case of heat shock.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 07:51:54