The effect of HA preparations of different soils on the physiological processes of the Chlorella vulgaris algae

M.A. Toropkina, A.G. Rumin , S.N. Chukov

Research output

Abstract

Physiological activity is one of the important environmental functions of humic acids (HA). We are studying the physiological effect of HA preparations on the unicellular green alga Chlorella vulgaris. To assess the effect of HA preparations on algae, indicators such as photosynthesis, respiration, cell numbers and sizes were used. The structural and functional properties of HAs isolated from contrasting soils vary greatly. This is due to the specific bio-hydrothermal conditions of humification, which determines the molecular structure of the preparations. The content of aromatic structures in HA molecules was determined by 13C-NMR. The content of free radicals was evaluated by method ESR. The study of the rate of photosynthesis and respiration of Chlorella vulgaris was carried out by the oxygen content in the light and in the dark. The duration of the interaction of algae cells with HA ranged from 1 to 5 days. The size and abundance of the algal cell culture were estimated by direct counting under a microscope using a computer program for analyzing graphic images (in Python), as well as a Shimadzu SALD-2201 laser diffractometer. During the research, it was found that HA preparations favorably affect the physiological processes of the culture of the alga Chlorella vulgaris. In the range of concentrations from 0.001 to 0.007%, HA concentrations of up to 0.003% are optimal. At HA concentrations of more than 0.003%, a negative effect of HA is observed for all preparations: photosynthesis decreases in Chlorella vulgaris cells and destructive processes increase sharply, causing an increase in oxygen consumption. The positive effect of the aromaticity of the preparations and the concentration of free radicals of chernozem HA on the acceleration of photosynthesis of Chlorella vulgaris was shown. HA of sod-podzolic soils with low aromaticity and low content of free radicals stimulate mainly the processes of reproduction. As a result of the studies, a tendency of a positive effect of aromaticity and concentration of free radicals of HA preparations on the acceleration of photosynthesis of Chlorella vulgaris was noted. On the contrary, the stimulation of the processes of the Chlorella vulgaris culture reproduction can be associated with a low concentration of free radicals and a small fraction of aromatic fragments in the HA molecules. Acknowledgements. This work was supported by the RC SPbGU “Cultivation of microorganisms” project No. 116-7485
Original languageEnglish
Title of host publicationFifth International Conference of CIS IHSS on Humic Innovative Technologies «Humic substances and living systems» (HIT-2019)
Subtitle of host publicationBook of Abstracts
EditorsIrina Perminova
Place of PublicationM.
Pages73
Publication statusPublished - Oct 2019
EventFifth International Conference of CIS IHSS on Humic Innovative Technologies «Humic substances and living systems» (HIT-2019) - Московский Государственный Университет им. Ломоносова, Москва
Duration: 19 Oct 201923 Oct 2019
http://www.humus.ru/hit-2019/eng/abstractbook.shtml

Conference

ConferenceFifth International Conference of CIS IHSS on Humic Innovative Technologies «Humic substances and living systems» (HIT-2019)
CountryRussian Federation
CityМосква
Period19/10/1923/10/19
Internet address

Cite this

Toropkina, M. A., Rumin , A. G., & Chukov, S. N. (2019). The effect of HA preparations of different soils on the physiological processes of the Chlorella vulgaris algae. In I. Perminova (Ed.), Fifth International Conference of CIS IHSS on Humic Innovative Technologies «Humic substances and living systems» (HIT-2019): Book of Abstracts (pp. 73). M..
Toropkina, M.A. ; Rumin , A.G. ; Chukov, S.N. . / The effect of HA preparations of different soils on the physiological processes of the Chlorella vulgaris algae. Fifth International Conference of CIS IHSS on Humic Innovative Technologies «Humic substances and living systems» (HIT-2019): Book of Abstracts. editor / Irina Perminova. M., 2019. pp. 73
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title = "The effect of HA preparations of different soils on the physiological processes of the Chlorella vulgaris algae",
abstract = "Physiological activity is one of the important environmental functions of humic acids (HA). We are studying the physiological effect of HA preparations on the unicellular green alga Chlorella vulgaris. To assess the effect of HA preparations on algae, indicators such as photosynthesis, respiration, cell numbers and sizes were used. The structural and functional properties of HAs isolated from contrasting soils vary greatly. This is due to the specific bio-hydrothermal conditions of humification, which determines the molecular structure of the preparations. The content of aromatic structures in HA molecules was determined by 13C-NMR. The content of free radicals was evaluated by method ESR. The study of the rate of photosynthesis and respiration of Chlorella vulgaris was carried out by the oxygen content in the light and in the dark. The duration of the interaction of algae cells with HA ranged from 1 to 5 days. The size and abundance of the algal cell culture were estimated by direct counting under a microscope using a computer program for analyzing graphic images (in Python), as well as a Shimadzu SALD-2201 laser diffractometer. During the research, it was found that HA preparations favorably affect the physiological processes of the culture of the alga Chlorella vulgaris. In the range of concentrations from 0.001 to 0.007{\%}, HA concentrations of up to 0.003{\%} are optimal. At HA concentrations of more than 0.003{\%}, a negative effect of HA is observed for all preparations: photosynthesis decreases in Chlorella vulgaris cells and destructive processes increase sharply, causing an increase in oxygen consumption. The positive effect of the aromaticity of the preparations and the concentration of free radicals of chernozem HA on the acceleration of photosynthesis of Chlorella vulgaris was shown. HA of sod-podzolic soils with low aromaticity and low content of free radicals stimulate mainly the processes of reproduction. As a result of the studies, a tendency of a positive effect of aromaticity and concentration of free radicals of HA preparations on the acceleration of photosynthesis of Chlorella vulgaris was noted. On the contrary, the stimulation of the processes of the Chlorella vulgaris culture reproduction can be associated with a low concentration of free radicals and a small fraction of aromatic fragments in the HA molecules. Acknowledgements. This work was supported by the RC SPbGU “Cultivation of microorganisms” project No. 116-7485",
author = "M.A. Toropkina and A.G. Rumin and S.N. Chukov",
year = "2019",
month = "10",
language = "English",
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editor = "Perminova, {Irina }",
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Toropkina, MA, Rumin , AG & Chukov, SN 2019, The effect of HA preparations of different soils on the physiological processes of the Chlorella vulgaris algae. in I Perminova (ed.), Fifth International Conference of CIS IHSS on Humic Innovative Technologies «Humic substances and living systems» (HIT-2019): Book of Abstracts. M., pp. 73, Москва, 19/10/19.

The effect of HA preparations of different soils on the physiological processes of the Chlorella vulgaris algae. / Toropkina, M.A.; Rumin , A.G.; Chukov, S.N. .

Fifth International Conference of CIS IHSS on Humic Innovative Technologies «Humic substances and living systems» (HIT-2019): Book of Abstracts. ed. / Irina Perminova. M., 2019. p. 73.

Research output

TY - CHAP

T1 - The effect of HA preparations of different soils on the physiological processes of the Chlorella vulgaris algae

AU - Toropkina, M.A.

AU - Rumin , A.G.

AU - Chukov, S.N.

PY - 2019/10

Y1 - 2019/10

N2 - Physiological activity is one of the important environmental functions of humic acids (HA). We are studying the physiological effect of HA preparations on the unicellular green alga Chlorella vulgaris. To assess the effect of HA preparations on algae, indicators such as photosynthesis, respiration, cell numbers and sizes were used. The structural and functional properties of HAs isolated from contrasting soils vary greatly. This is due to the specific bio-hydrothermal conditions of humification, which determines the molecular structure of the preparations. The content of aromatic structures in HA molecules was determined by 13C-NMR. The content of free radicals was evaluated by method ESR. The study of the rate of photosynthesis and respiration of Chlorella vulgaris was carried out by the oxygen content in the light and in the dark. The duration of the interaction of algae cells with HA ranged from 1 to 5 days. The size and abundance of the algal cell culture were estimated by direct counting under a microscope using a computer program for analyzing graphic images (in Python), as well as a Shimadzu SALD-2201 laser diffractometer. During the research, it was found that HA preparations favorably affect the physiological processes of the culture of the alga Chlorella vulgaris. In the range of concentrations from 0.001 to 0.007%, HA concentrations of up to 0.003% are optimal. At HA concentrations of more than 0.003%, a negative effect of HA is observed for all preparations: photosynthesis decreases in Chlorella vulgaris cells and destructive processes increase sharply, causing an increase in oxygen consumption. The positive effect of the aromaticity of the preparations and the concentration of free radicals of chernozem HA on the acceleration of photosynthesis of Chlorella vulgaris was shown. HA of sod-podzolic soils with low aromaticity and low content of free radicals stimulate mainly the processes of reproduction. As a result of the studies, a tendency of a positive effect of aromaticity and concentration of free radicals of HA preparations on the acceleration of photosynthesis of Chlorella vulgaris was noted. On the contrary, the stimulation of the processes of the Chlorella vulgaris culture reproduction can be associated with a low concentration of free radicals and a small fraction of aromatic fragments in the HA molecules. Acknowledgements. This work was supported by the RC SPbGU “Cultivation of microorganisms” project No. 116-7485

AB - Physiological activity is one of the important environmental functions of humic acids (HA). We are studying the physiological effect of HA preparations on the unicellular green alga Chlorella vulgaris. To assess the effect of HA preparations on algae, indicators such as photosynthesis, respiration, cell numbers and sizes were used. The structural and functional properties of HAs isolated from contrasting soils vary greatly. This is due to the specific bio-hydrothermal conditions of humification, which determines the molecular structure of the preparations. The content of aromatic structures in HA molecules was determined by 13C-NMR. The content of free radicals was evaluated by method ESR. The study of the rate of photosynthesis and respiration of Chlorella vulgaris was carried out by the oxygen content in the light and in the dark. The duration of the interaction of algae cells with HA ranged from 1 to 5 days. The size and abundance of the algal cell culture were estimated by direct counting under a microscope using a computer program for analyzing graphic images (in Python), as well as a Shimadzu SALD-2201 laser diffractometer. During the research, it was found that HA preparations favorably affect the physiological processes of the culture of the alga Chlorella vulgaris. In the range of concentrations from 0.001 to 0.007%, HA concentrations of up to 0.003% are optimal. At HA concentrations of more than 0.003%, a negative effect of HA is observed for all preparations: photosynthesis decreases in Chlorella vulgaris cells and destructive processes increase sharply, causing an increase in oxygen consumption. The positive effect of the aromaticity of the preparations and the concentration of free radicals of chernozem HA on the acceleration of photosynthesis of Chlorella vulgaris was shown. HA of sod-podzolic soils with low aromaticity and low content of free radicals stimulate mainly the processes of reproduction. As a result of the studies, a tendency of a positive effect of aromaticity and concentration of free radicals of HA preparations on the acceleration of photosynthesis of Chlorella vulgaris was noted. On the contrary, the stimulation of the processes of the Chlorella vulgaris culture reproduction can be associated with a low concentration of free radicals and a small fraction of aromatic fragments in the HA molecules. Acknowledgements. This work was supported by the RC SPbGU “Cultivation of microorganisms” project No. 116-7485

UR - http://www.humus.ru/hit-2019/abstractbook/HIT-2019-abstractbook.pdf

M3 - Other chapter contribution

SN - 9785604354018

SP - 73

BT - Fifth International Conference of CIS IHSS on Humic Innovative Technologies «Humic substances and living systems» (HIT-2019)

A2 - Perminova, Irina

CY - M.

ER -

Toropkina MA, Rumin AG, Chukov SN. The effect of HA preparations of different soils on the physiological processes of the Chlorella vulgaris algae. In Perminova I, editor, Fifth International Conference of CIS IHSS on Humic Innovative Technologies «Humic substances and living systems» (HIT-2019): Book of Abstracts. M. 2019. p. 73