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Zinc Affects Differently Growth, Photosynthesis, Antioxidant Enzyme Activities and Phytochelatin Synthase Expression of Four Marine Diatoms
Joint Authors
Tremblin, Gérard
Schoefs, Benoît
Morant-Manceau, Annick
Caruso, Aurore
Le, Thi Trung
Nguyen-Deroche, Thi Le Nhung
Bui, Trang Viet
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-03
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
Zinc-supplementation (20 μM) effects on growth, photosynthesis, antioxidant enzyme activities (superoxide dismutase, ascorbate peroxidase, catalase), and the expression of phytochelatin synthase gene were investigated in four marine diatoms (Amphora acutiuscula, Nitzschia palea, Amphora coffeaeformis and Entomoneis paludosa).
Zn-supplementation reduced the maximum cell density.
A linear relationship was found between the evolution of gross photosynthesis and total chlorophyll content.
The Zn treatment decreased the electron transport rate except in A.
coffeaeformis and in E.
paludosa at high irradiance.
A linear relationship was found between the efficiency of light to evolve oxygen and the size of the light-harvesting antenna.
The external carbonic anhydrase activity was stimulated in Zn-supplemented E.
paludosa but was not correlated with an increase of photosynthesis.
The total activity of the antioxidant enzymes did not display any clear increase except in ascorbate peroxidase activity in N.
palea.
The phytochelatin synthase gene was identified in the four diatoms, but its expression was only revealed in N.
palea, without a clear difference between control and Zn-supplemented cells.
Among the four species, A.
paludosa was the most sensitive and A.
coffeaeformis, the most tolerant.
A.
acutiuscula seemed to be under metal starvation, whereas, to survive, only N.
palea developed several stress responses.
American Psychological Association (APA)
Nguyen-Deroche, Thi Le Nhung& Caruso, Aurore& Le, Thi Trung& Bui, Trang Viet& Schoefs, Benoît& Tremblin, Gérard…[et al.]. 2012. Zinc Affects Differently Growth, Photosynthesis, Antioxidant Enzyme Activities and Phytochelatin Synthase Expression of Four Marine Diatoms. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-513440
Modern Language Association (MLA)
Nguyen-Deroche, Thi Le Nhung…[et al.]. Zinc Affects Differently Growth, Photosynthesis, Antioxidant Enzyme Activities and Phytochelatin Synthase Expression of Four Marine Diatoms. The Scientific World Journal No. 2012 (2012), pp.1-15.
https://search.emarefa.net/detail/BIM-513440
American Medical Association (AMA)
Nguyen-Deroche, Thi Le Nhung& Caruso, Aurore& Le, Thi Trung& Bui, Trang Viet& Schoefs, Benoît& Tremblin, Gérard…[et al.]. Zinc Affects Differently Growth, Photosynthesis, Antioxidant Enzyme Activities and Phytochelatin Synthase Expression of Four Marine Diatoms. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-513440
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-513440