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The effect of lowered salinity of sea water on the growth and photosynthetic pigment content in three strains of the microalgae Pseudo-nitzschia pungens (Grunow ex. P.T. Cleve) Hasle, 1993 (Bacillariophyta)

The effect of lowered salinity of sea water on the growth and photosynthetic pigment content in... The effect of lowered salinity on the growth and the content of photosynthetic pigments (PPs) of chlorophyll a and of carotenoids was studied in three strains of the microalga Pseudo-nitzschia pungens, PP-07, PP-08 and PP-081. It was determined that under a salinity of 24‰ the number of cells and the PP contents from all the P. pungens strains decreased after 1 day exposure compared to the control (salinity 32‰); with increasing exposure, these parameters were restored to the control level. The number of cells and PP content decreased more significantly for a 1 day exposure to salinity lowered to 16‰.The number of dead cells was the highest under salinities of 8 and 4‰ after a 1 day exposure; by the end of the test the number of cells and PP contents were low. It was shown that strains PP-07 and PP-081 were less tolerant to the effects of lowered salinity than strain PP-08. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

The effect of lowered salinity of sea water on the growth and photosynthetic pigment content in three strains of the microalgae Pseudo-nitzschia pungens (Grunow ex. P.T. Cleve) Hasle, 1993 (Bacillariophyta)

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References (29)

Publisher
Springer Journals
Copyright
Copyright © 2016 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
DOI
10.1134/S1063074016050060
Publisher site
See Article on Publisher Site

Abstract

The effect of lowered salinity on the growth and the content of photosynthetic pigments (PPs) of chlorophyll a and of carotenoids was studied in three strains of the microalga Pseudo-nitzschia pungens, PP-07, PP-08 and PP-081. It was determined that under a salinity of 24‰ the number of cells and the PP contents from all the P. pungens strains decreased after 1 day exposure compared to the control (salinity 32‰); with increasing exposure, these parameters were restored to the control level. The number of cells and PP content decreased more significantly for a 1 day exposure to salinity lowered to 16‰.The number of dead cells was the highest under salinities of 8 and 4‰ after a 1 day exposure; by the end of the test the number of cells and PP contents were low. It was shown that strains PP-07 and PP-081 were less tolerant to the effects of lowered salinity than strain PP-08.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Nov 4, 2016

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