Pigment mutants of the green microalga Chlamydomonas reinhardtii: morphological properties and photosynthetic performance

Authors

  • Заядан Б.К., Маторин Д.Н., Акмуханова Н. Садвакасова А.К., Болатхан К., Бауенова Каренеева Ж., Төреханова М.М. Al-Farabi Kazakh National University, Kazakhstan, Almaty., Lomonosov Moscow State University, Russia, Moscow

DOI:

https://doi.org/10.26577/EJE.2019.v59.i2.09
        117 0

Abstract

Pigment mutants CC-124y-1, СС-124у-2, and СС-124р-2 of the green microalga Chlamydomonas
reinhardtii Dangeard were obtained by means of UV-induced mutagenesis. Morphological properties
and photosynthetic activity of these mutants were examined. The mutants displayed a lowered content
of chlorophyll b and carotenoids. Analysis of fluorescence induction curves revealed the decreased rates
of electron transport in photosystem II (PSII), the increase in the fraction of QB-nonreducing centers, and
the enhancement of nonphotochemical fluorescence quenching. The mutations had no direct impact on
oxidation of pigment P700 in PSI and on the decline of delayed fluorescence. The parameters of induction curves of prompt and delayed fluorescence are proposed for use in early diagnostics of UV-induced
mutagenesis. The pigment mutants obtained can be applied in biomonitoring studies.
Key words: Chlamydomonas reinhardtii, chlorophyll a fluorescence, delayed fluorescence, JIP test,
photosynthesis.

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How to Cite

Каренеева Ж., Төреханова М.М., З. Б. М. Д. А. Н. С. А. Б. К. Б. (2019). Pigment mutants of the green microalga Chlamydomonas reinhardtii: morphological properties and photosynthetic performance. Eurasian Journal of Ecology, 59(2), PDF. https://doi.org/10.26577/EJE.2019.v59.i2.09

Issue

Vol. 59 No. 2 (2019): Eurasian Journal of Ecology

Section

ASSESSMENT OF THE EFFECTS OF ENVIRONMENTAL POLLUTANTS ON BIOTA AND HEALTH OF THE