Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
RESPONSES OF RESPIRATION AND PHOTOSYNTHESIS OF SCENEDESMUS PROTUBERANS FRITSCH TO GRADUAL AND STEEP SALINITY INCREASES
Autore:
FLAMELING IA; KROMKAMP J;
Indirizzi:
NETHERLANDS INST ECOL,CTR ESTUARINE & COASTAL ECOL,VIERST 28 4401 EA YERSEKE NETHERLANDS
Titolo Testata:
Journal of plankton research
fascicolo: 12, volume: 16, anno: 1994,
pagine: 1781 - 1791
SICI:
0142-7873(1994)16:12<1781:RORAPO>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIATOM SKELETONEMA-COSTATUM; NITROGEN-METABOLISM; LIGHT; PHYTOPLANKTON; CYANOBACTERIA; STRESS; GROWTH; CHLOROPHYCEAE; PERFORMANCE; IRRADIANCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
I.A. Flameling e J. Kromkamp, "RESPONSES OF RESPIRATION AND PHOTOSYNTHESIS OF SCENEDESMUS PROTUBERANS FRITSCH TO GRADUAL AND STEEP SALINITY INCREASES", Journal of plankton research, 16(12), 1994, pp. 1781-1791

Abstract

The effect of an increase in salinity on the physiology of the halotolerant chlorophyte Scenedesmus protuberans was studied in light-limited continuous cultures. It was observed that a gradual, as well as a steep increase in salinity resulted in lower biomass. However, the mechanisms by which this was achieved were different. In the culture that was exposed to a gradual salinity increase, respiration and the cellular protein content of the culture were initially unaffected. However, this culture was not able to maintain its cellular chlorophyll content and, consequently, gross and net photosynthesis decreased. The culturethat was exposed to a steep salinity increase rapidly reacted by increasing its respiration and cellular protein content, which is ascribedto an induction of osmoregulation. This culture was able to maintain its gross photosynthesis rate. It is speculated that, in this species,a steep salinity increase induces a nearly immediate osmoregulatory response, allowing growth to continue. If the cells are exposed to a gradual salinity increase, induction of osmoregulation lags behind and, consequently, photosynthesis and growth rate will be affected.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 10:33:12