Effect of vanadium on growth, chlorophyll formation and iron metabolism in unicellular green algae.

Archives of Microbiology
H U Meisch, H J Bielig

Abstract

In the presence of vanadium, growth of Scenedesmus obliquus and Chlorella pyrenoidosa was increased five to sixfold as determined by dry weight, when cultured under autotrophic conditions for 7 days. The stimulation by vanadium decreased with increasing stability towards hydrolysis of the iron(III)-compounds added. Pentavalent vanadium (20 mug V/1 as NH4VO3) was able to overcome completely a limited iron-deficiency in the algae following growth in presence of 1.8 - 10(-5) m ferric chloride. Vanadium did not alter the iron uptake into the algal cells. 90% of offered 48V was taken up by Scenedesmus obliquus during 5 days of growth, and 21% thereof were found in the chloroplast fraction. In presence of vanadium, the chlorophyll formation was stimulated in Scenedesmus obliquus. This stimulation by vanadium was found to be light-dependent but occurred to a certain extent in the dark also. The main porphyrin of the yellow mutant 211-11h/20 of Chlorella vulgaris was identified as protoporphyrin-IX. The formation of this compound was stimulated by vanadium within 10 days up to 83%. The role of vanadium in the biosynthesis of chlorophylls is discussed.

References

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Citations

Jul 26, 1977·Archives of Microbiology·H U MeischH J Bielig
Jun 12, 1981·Biochimica Et Biophysica Acta·H U Meisch, L J Becker
Oct 17, 2015·International Journal of Molecular Sciences·Krystian MiazekDorothee Goffin
Sep 4, 2015·Environmental Toxicology and Chemistry·Ting ChenJin-Yan Yang
Apr 9, 2015·Frontiers in Microbiology·Laura Gómez-Consarnau, Sergio A Sañudo-Wilhelmy
Jan 23, 1978·Archives of Microbiology·H U Meisch, H Benzschawel
May 1, 1980·Basic Research in Cardiology·H U Meisch, H J Bielig
Nov 22, 2016·Ecotoxicology and Environmental Safety·Stephanie Schiffer, Karsten Liber
May 28, 2021·Frontiers in Bioengineering and Biotechnology·Zhang-He ZhenYin-Chu Wang
Mar 17, 2020·Ecotoxicology and Environmental Safety·Yun DengWen-Quan Ruan

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