The effects of brown alga proteins and polysaccharides on egg fertilization and the development of embryos of the sea urchin Strongylocentrotus intermedius A. Agassiz, 1863

The effects of brown alga proteins and polysaccharides on egg fertilization and the development... The toxic effects of a water–ethanol extract of the brown alga Saccharina (= Laminaria) cichorioides and the isolated I1 and I2 proteins on egg fertilization and the development of embryos of the sea urchin Strongylocentrotus intermedius were revealed and studied. The protective effects of fucoidans and 1,3;1,6-β-D-glucans (laminarans, translam, and glucan II) that were isolated from the brown algae S. cichorioides and Fucus evanescens against the toxic impacts of the I1 and I2 proteins were examined. It was found that the lifespan of sea urchin embryos increased from 1.5 to 3 times in the presence of 1,3;1,6-β-D-glucans and fucoidans, whereas the I1 and I2 proteins decreased embryo viability by 2 times. Preadministration of polysaccharides completely neutralized the inhibitory effects of the proteins on developing embryos. It was also shown that a water–ethanol extract of S. cichorioides, derived I1 and I2 proteins, and fucoidans has a contraceptive effect. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

The effects of brown alga proteins and polysaccharides on egg fertilization and the development of embryos of the sea urchin Strongylocentrotus intermedius A. Agassiz, 1863

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Publisher
Pleiades Publishing
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1134/S1063074015060097
Publisher site
See Article on Publisher Site

Abstract

The toxic effects of a water–ethanol extract of the brown alga Saccharina (= Laminaria) cichorioides and the isolated I1 and I2 proteins on egg fertilization and the development of embryos of the sea urchin Strongylocentrotus intermedius were revealed and studied. The protective effects of fucoidans and 1,3;1,6-β-D-glucans (laminarans, translam, and glucan II) that were isolated from the brown algae S. cichorioides and Fucus evanescens against the toxic impacts of the I1 and I2 proteins were examined. It was found that the lifespan of sea urchin embryos increased from 1.5 to 3 times in the presence of 1,3;1,6-β-D-glucans and fucoidans, whereas the I1 and I2 proteins decreased embryo viability by 2 times. Preadministration of polysaccharides completely neutralized the inhibitory effects of the proteins on developing embryos. It was also shown that a water–ethanol extract of S. cichorioides, derived I1 and I2 proteins, and fucoidans has a contraceptive effect.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Jan 5, 2016

References

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