Abstract
Timely information about basic growth parameters, such as dry weight, cell number, and pigment (chlorophyll and carotenoid) content is of importance for the evaluation of physiological conditions and growth kinetics of microalgal suspension cultures. The possibility of non-destructive determination of these parameters using the optical density (total light attenuation due to light scattering and absorption by the microalgal cells and the pigments contained therein) spectra of the cell suspension was shown for unicellular green algae Ettlia carotinosa Komarek and Haematococcus pluvialis Flotow (Chlorophyceae). Estimation of the pigment content of morphologically heterogeneous cultures (such as H. pluvialis) with a reasonable accuracy required the light-scattering compensation of the measured extinction spectra. On the other hand, the scattering signal is useful for dry weight and cell density estimation (in the cultures with insignificant morphological heterogeneity). The spectral regions sensitive to the variation in the target culture parameters was found, and the spectral indices linearly correlated with the latter were constructed. The possibilities and limitations of the optical methods suitable for non-destructive monitoring of the microalgal cultures in the course of their balanced growth and the potential of the developed approach for microalga biotechnology are discussed.
Similar content being viewed by others
Abbreviations
- Car:
-
carotenoid(s)
- MA:
-
microalga(e)
- OD:
-
optical density
- DW:
-
dry weight
- Chl:
-
chlorophyll(s)
- NIR:
-
near infrared region
- RMSE:
-
the root mean square error
References
Lv, H., Qu, G., Qi, X., Lu, L., Tian, C., and Ma, Y., Transcriptome analysis of Chlamydomonas reinhardtii during the process of lipid accumulation, Genomics, 2013, vol. 101, pp. 229–237.
Zittelli, G.C., Biondi, N., Rodolfi, L., and Tredici, M.R., Photobioreactors for mass production of microalgae, Handbook of Microalgal Culture: Applied Phycology and Biotechnology, Richmond, A. and Hu, Q., Eds., Oxford: Wiley-Blackwell, 2013, pp. 225–266.
Tsoglin, L.N. and Pronina, N.A., Biotekhnologiya mikrovodoroslei (Microalgal Biotechnology), Moscow: Nauchnyi mir, 2013.
Solovchenko, A., Aflalo, C., Lukyanov, A., and Boussiba, S., Nondestructive monitoring of carotenogenesis in Haematococcus pluvialis via whole-cell optical density spectra, Appl. Microbiol. Biotechnol., 2013, vol. 97, pp. 4533–4541.
Solovchenko, A., Merzlyak, M., Khozin-Goldberg, I., Cohen, Z., and Boussiba, S., Coordinated carotenoid and lipid syntheses induced in Parietochloris incise (Chlorophyta, Trebouxiophyceae) mutant deficient in Δ5-desaturase by nitrogen starvation and high light, J. Phycol., 2010, vol. 46, pp. 763–772.
Solovchenko, A., Khozin-Goldberg, I., Recht, L., and Boussiba, S., Stress-induced changes in optical properties, pigment and fatty acid content of Nannochloropsis sp.: implications for non-destructive assay of total fatty acids, Mar. Biotechnol., 2011, vol. 13, pp. 527–535.
Duysens, L., The flattening of the absorption spectrum of suspensions, as compared to that of solutions, Biochim. Biophys. Acta, 1956, vol. 19, pp. 1–12.
Amesz, J., Duysens, L., and Brandt, D., Methods for measuring and correcting the absorption spectrum of scattering suspensions, J. Theor. Biol., 1961, vol. 1, pp. 59–74.
Latimer, P. and Eubanks, C., Absorption spectrophotometry of turbid suspensions: a method of correcting for large systematic deviations, Arch. Biochem. Biophys., 1962, vol. 98, pp. 274–285.
Morel, A. and Bricaud, A., Theoretical results concerning light absorption in a discrete medium, and application to specific absorption of phytoplankton, Deep-Sea Research. Part A, Oceanographic Res. Papers, 1981, vol. 28, pp. 1375–1393.
Bricaud, A., Bédhomme, A.-L., and Morel, A., Optical properties of diverse phytoplanktonic species: experimental results and theoretical interpretation, J. Plankton Res., 1988, vol. 10, pp. 851–873.
Morel, A., Optics of marine particles and marine optics, Particle Analysis in Oceanography, NATO ASI Ser., 1991, vol. 27, pp. 141–188.
Merzlyak, M.N., Chivkunova, O.B., Maslova, I.P., Nakvi, K.R., Solovchenko, A.E., and Klyachko-Gurvich, G.L., Light absorption and scattering by cell suspensions of some cyanobacteria and microalgae, Russ. J. Plant Physiol., 2008, vol. 55, pp. 420–425.
Merzlyak, M.N. and Naqvi, K.R., On recording the true absorption spectrum and the scattering spectrum of a turbid sample: application to cell suspensions of the cyanobacterium Anabaena variabilis, J. Photochem. Photobiol., B: Biol., 2000, vol. 58, pp. 123–129.
Gitelson, A.A., Keydan, G.P., and Merzlyak, M.N., Three-band model for noninvasive estimation of chlorophyll, carotenoids, and anthocyanin contents in higher plant leaves, Geophys. Rev. Lett., 2006, vol. 33(L11402), doi 10.1029/2006GL026457
Merzlyak, M.N., Gitelson, A.A., Chivkunova, O.B., Solovchenko, A.E., and Pogosyan, S.I., Application of reflectance spectroscopy for analysis of higher plant pigments, Russ. J. Plant Physiol., 2003, vol. 50, pp. 704–710.
Chelebieva, E., Minyuk, G., Drobetskaya, I., and Chubchikova, I., Physiological and biochemical patterns of microalgae Ettlia carotinosa Komarek 1989 (Chlorophyceae) during experimental stress, Morsk. Ekol. Zhurn., 2013, vol. 12, pp. 78–87.
Han, D., Li, Y., and Hu, Q., Biology and commercial aspects of Haematococcus pluvialis, Handbook of Microalgal Culture: Applied Phycology and Biotechnology, Richmond, A. and Hu, Q, Eds., Oxford: Wiley-Blackwell, 2013, pp. 388–405.
Rippka, R., Deruelles, J., Waterbury, J.B., Herdman, M., and Stanier, R.Y., Generic assignments, strain histories and properties of pure cultures of cyanobacteria, J. General Microbiol., 1979, vol. 111, pp. 1–61.
Pal, D., Khozin-Goldberg, I., Cohen, Z., and Boussiba, S., The effect of light, salinity, and nitrogen availability on lipid production by Nannochloropsis sp., Appl. Microbiol. Biotechnol., 2011, vol. 90, pp. 1429–1441.
Morel, A., Diffusion de la lumière par les eaux de mer. résultats expérimentaux et approche théorique, Optics Sea, AGARD Lect. Ser., 1973, vol. 61, pp. 3.1.1–3.1.76.
Naqvi, K.R., Merzlyak, M.N., and Mel_, T.B., Absorption and scattering of light by suspensions of cells and subcellular particles: an analysis in terms of Kramers-Kronig relations, Photochem. Photobiol. Sci., 2004, vol. 3, pp. 132–137.
Gladstone, J.H. and Dale, T., Researches on the refraction, dispersion, and sensitiveness of liquids, Phil. Trans. R. Soc. (London), 1863, vol. 153, pp. 317–543.
Stramski, D., Refractive index of planktonic cells as a measure of cellular carbon and chlorophyll a content, Deep-Sea Res., part 1, Oceanographic Res. Papers, 1999, vol. 46, pp. 335–351.
Aas, E., Refractive index of phytoplankton derived from its metabolite composition, J. Plankton Res., 1996, vol. 18, pp. 2223–2249.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © K.A. Chekanov, A.E. Solovchenko, 2015, published in Fiziologiya Rastenii, 2015, Vol. 62, No. 2, pp. 291–300.
Rights and permissions
About this article
Cite this article
Chekanov, K.A., Solovchenko, A.E. Possibilities and limitations of non-destructive monitoring of the unicellular green microalgae (Chlorophyta) in the course of balanced growth. Russ J Plant Physiol 62, 270–278 (2015). https://doi.org/10.1134/S1021443715010033
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1021443715010033