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Titolo:
GROWTH AND OSMOREGULATION OF CHAETOCEROS-MUELLERI IN RELATION TO SALINITY
Autore:
FUJII S; NISHIMOTO N; NOTOYA A; HELLEBUST JA;
Indirizzi:
TEZUKAYAMA GAKUIN COLL,BIOL & CHEM LAB,3-1-3 GAKUEN MINAMI NARA 631 JAPAN UNIV TORONTO,DEPT BOT TORONTO ON M5S 3B2 CANADA
Titolo Testata:
Plant and Cell Physiology
fascicolo: 5, volume: 36, anno: 1995,
pagine: 759 - 764
SICI:
0032-0781(1995)36:5<759:GAOOCI>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
GRACILIS;
Keywords:
CHAETOCEROS MUELLERI; CYCLOHEXANETETROL; DIATOM; EURYHALINE; GLUTAMIC ACID; OSMOREGULATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
S. Fujii et al., "GROWTH AND OSMOREGULATION OF CHAETOCEROS-MUELLERI IN RELATION TO SALINITY", Plant and Cell Physiology, 36(5), 1995, pp. 759-764

Abstract

The growth and osmoregulation of Chaetoceros muelleri Lemmermann (Bacillariophyceae) were investigated as a function of salinity. This centric diatom grew well over a wide range of salinity and required concentrations of NaCl above 10 mM for growth. Using gas chromatography-massspectroscopy (GC-MS) analysis of cell extracts, we demonstrated that the alga contains an isomer of cyclohexanetetrol. The level of this isomer increased with increasing salinity. Levels of free amino acids also increased with increasing salinity, and quantitative determination with an amino acid analyzer revealed that the level of glutamic acid increased the most with increases in salinity. Levels of intracellular K+ and Cl- also increased significantly with increases in salinity. Thus, in C. muelleri, not only organic solutes such as the cyclohexanetetrol isomer and glutamic acid, but also inorganic solutes such as K+ and Cl- contribute to osmoregulation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 08:38:02