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International Journal on Algae
SJR: 0.219 SNIP: 0.261 CiteScore™: 0.24

ISSN Print: 1521-9429
ISSN Online: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v7.i4.20
pages 310-333

Photomovement of algae: a comparative taxonomic aspect

N. P. Masyuk
N.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, 2, Tereshchenkovskaya St., 01001 Kiev, Ukraine
Yu. I. Posudin
National Agricultural University, Chair of Biophysics, 15, Geroyev Oborony St., Kiev, 03041 Ukraine
G. G. Lilitskaya
N.G. Kholodny Institute of Botany, NAS of Ukraine, 2, Tereshchenkovskaya St., Kiev 01004, Ukraine

ABSTRACT

Issues of terminology concerning the photomovement of freely motile microorganisms and preliminary results of studying photomovement of cells in hyperhalobic species of Dunaliella Teod. (Dunaliellales, Chlorophyceae, Viridiplantae) in comparison with photomovement peculiarities of other flagellate algae, representatives of other taxa (genera, orders, classes, kingdoms of the organic world) are discussed. It is shown that with an increase in phylogenetic distance between taxa the distinctions in their photobehavior, structure, and mechanisms of functioning in photoreception systems become deeper, during the process of sensory transformation of a light signal to motile reactions of different types, in the activity of the flagellar apparatus. Therefore, data on features of photomovement of algae are of interest as additional differential criteria are described in evolutionary biology, phylogenetics, systematics, and taxonomy of algae. Along with distinctions, we also noted some common fundamental features in photomovement processes and their photoregulation in flagellates; these features do not depend on taxonomic positions of the studied organisms. The importance of photobiological researches of photomovement of algae in adjacent fields of science is discussed: ecology (including autecology), geography of algae, applied phycology, in particular, biotechnology, and environmental biomonitoring.