Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/48289
Title: Photosynthetic characteristics of Dunaliella salina (Chlorophyceae, Dunaliellales) in relation to β-carotene content
Authors: Gómez-Pinchetti, Juan Luis 
Ramazanov, Ziyadin
Fontes, Agustín
García-Reina, Guillermo 
UNESCO Clasification: 251004 Botánica marina
241707 Algología (ficología)
Keywords: Adaptation
β-carotene
Dunaliella salina
Photosynthesis
Issue Date: 1992
Publisher: 0921-8971
Journal: Journal of Applied Phycology 
Abstract: Photosynthetic characteristics of Dunaliella salina with high (red form) and low β-carotene (green form) concentrations were studied. D. salina growing in brine saltworks exhibited a high level of β-carotene (15 pg cell−1). The rate of oxygen evolution as a function of irradiance was higher in the red than in the green form (on chlorophyll basis). Photosynthetic inhibition of the green form was observed above 500 µmol m−2 s−1. The red form appeared more resistant to high irradiance and no inhibition in O2 evolution was observed up 2000 µmol m−2 s−1. However, when these results are expressed on a cell number basis the rate of oxygen evolution was significantly higher in the green form. Carbonic anhydrase (CA) activity (total, soluble, membrane bound) was found in red and green forms. CA was higher in the red form on a chlorophyll basis, but lower if expressed on a protein basis. The light dependent rate of oxygen evolution and photoinhibition depends on the concentration of β-carotene in D. salina cells.
URI: http://hdl.handle.net/10553/48289
ISSN: 0921-8971
DOI: 10.1007/BF00003955
Source: Journal of Applied Phycology [ISSN 0921-8971], v. 4, p. 11-15
Appears in Collections:Artículos
Show full item record

SCOPUSTM   
Citations

14
checked on Jun 13, 2021

WEB OF SCIENCETM
Citations

15
checked on Apr 25, 2021

Page view(s)

76
checked on Jun 13, 2021

Google ScholarTM

Check

Altmetric


Share



Export metadata



Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.