Summary
The ultrastructure of the unicellular green algaChlorella fusca, grown in the absence and presence of vanadium (4 · 10−7 M as NH4VO3) and under iron deficiency, is investigated by electron microscopy. Iron and vanadium deficiencies are characterized by an accumulation of intracellular starch, the observation being confirmed by chemical analysis of the amount of algal total starch. While iron deficiency causes dishorders in the chloroplast lamellar system and very often disintegration of the whole cell, the presence of vanadate prevents these symptoms. V-grown cells form only little starch, but show an enlarged thylakoid system within the chloroplast. The metabolic significance of these observations is discussed.
Similar content being viewed by others
References
Arnon, D. I., Wessel, G., 1953: Vanadium as an essential element for green plants. Nature (London)172, 1039–1040.
Banauch, D., Brümmer, W., Ebeling, W., Metz, H., Rindfrey, H., Lang, H., Leybold, K., Rick, W., 1975: Eine Glucose-Dehydrogenase für die Glucose-Bestimmung in Körperflüssigkeiten. Z. Klin. Chem. Klin. Biochem.13, 101–107.
Brinkmann, G., Senger, H., 1978: The development of structure and function in chloroplasts of greening mutants ofScenedesmus. IV. Blue-light dependent carbohydrate and protein metabolism. Plant Cell Physiol.19, 1427–1437.
Granick, S., Beale, S. I., 1978: Hemes, chlorophylls and related compounds: Biosynthesis and metabolic regulation. In: Advances in Enzymology, Vol.46 (Meister, A., ed.), pp. 33–204. New York: Wiley.
Marsh, H. V., Evans, H. J., Matrone, G., 1963: Investigations of the role of iron in chlorophyll metabolism. II. Effect of iron deficiency on chlorophyll synthesis. Plant Physiol.38, 638–642.
Meisch, H.-U., Bauer, J., 1978: The role of vanadium in green plants. IV. Influence on the formation of δ-aminolevulinic acid inChlorella. Arch. Microbiol.117, 49–52.
—,Bellmann, I., 1980: Light dependence of the vanadium induced formation of chlorophyll and δ-aminolevulinic acid inChlorella. Z. Pflanzenphysiol.96, 143–151.
—,Benzschawel, H., Bielig, H. J., 1977: The role of vanadium in green plants. II. Vanadium in green algae — two sites of action. Arch. Microbiol.114, 67–70.
—,Bielig, H. J., 1975: Effect of vanadium on growth, chlorophyll formation and iron metabolism in unicellular green algae. Arch. Microbiol.105, 77–82.
Senger, H., Strassberger, G., 1978: Development of the photosystems in greening algae. In: Chloroplast Development (Akoyunoglou, G., Agyroudi-Akoyunoglou, J. H., eds.), pp. 367–378. Amsterdam: Elsevier.
Author information
Authors and Affiliations
Additional information
Taken in part from the forthcoming doctoral thesis of L. J. M. Becker.
Rights and permissions
About this article
Cite this article
Meisch, H.U., Becker, L.J.M. & Schwab, D. Ultrastructural changes inChlorella fusca during iron deficiency and vanadium treatment. Protoplasma 103, 273–280 (1980). https://doi.org/10.1007/BF01276273
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01276273