EXOGENOUS LIGNIN ENHANCES THE RESISTANCE OF LEMNA MINOR L. AQUATIC PLANTS TO COPPER STRESS:

Irina Sergeevna Bodnar; Anatoly Petrovich Karmanov; Lyudmila Sergeevna Kocheva; Evgenia Vasilevna Cheban; Oksana Veniaminovna Raskosha

doi:10.14258/jcprm.20260217881

Irina Sergeevna Bodnar Institute of Biology, Federal Research Center of the Komi Science Center, Ural Branch of the Russian Academy of Sciences Email: bodnar-irina@mail.ru
Anatoly Petrovich Karmanov Institute of Biology, Federal Research Center of the Komi Science Center, Ural Branch of the Russian Academy of Sciences http://orcid.org/0000-0001-6871-5684 Email: apk0948@yandex.ru
Lyudmila Sergeevna Kocheva Institute of Geology, Federal Research Center of the Komi Science Center, Ural Branch of the Russian Academy of Sciences Email: karko07@mail.ru
Evgenia Vasilevna Cheban Institute of Biology, Federal Research Center of the Komi Science Center, Ural Branch of the Russian Academy of Sciences Email: cheban.e@ib.komisc.ru
Oksana Veniaminovna Raskosha Institute of Biology, Federal Research Center of the Komi Science Center, Ural Branch of the Russian Academy of Sciences Email: raskosha@ib.komisc.ru

https://doi.org/10.14258/jcprm.20260217881

Ключевые слова: lignin, duckweed, copper stress, antioxidant activity, biological activity

Аннотация

Currently, there is a growing interest in preparations made from lignin, due to their various useful properties. These include biodegradability, biocompatibility, harmlessness, and a wide range of biological activities. For the first time, the fundamental possibility of using exogenous lignin to protect aquatic plant organisms from the negative effects of copper ions has been demonstrated in this work. Lignin from ledum (Ledum palustre L.) was tested as a chemoprotective agent. Presents the results of a study on the biological activity of isolated lignin on a laboratory culture of duckweed (Lemna minor L.) under the influence of a copper stress factor. During the experiments, we established the values of biomarkers for plant well-being (growth rate, level of damage, frond area, content of malondialdehyde and chlorophyll) and found that water-soluble lignin from ledum was not toxic to plant organisms. Preliminary cultivation of plants in aqueous lignin-containing media increased the total frond area, had a positive effect on growth rate, and reduced the level of damage to duckweed in copper-containing aqueous media. It was concluded that pre-treating duckweed with water-soluble lignin would increase the plant's resistance to copper stress. The data obtained confirm the opinion about the adaptive and protective properties of lignin under the influence of stress factors of various nature.

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Биографии авторов

Irina Sergeevna Bodnar, Institute of Biology, Federal Research Center of the Komi Science Center, Ural Branch of the Russian Academy of Sciences

Candidate of Biological Sciences, Researcher

Anatoly Petrovich Karmanov, Institute of Biology, Federal Research Center of the Komi Science Center, Ural Branch of the Russian Academy of Sciences

Doctor of Chemical Sciences, Professor, Leading Researcher

Lyudmila Sergeevna Kocheva, Institute of Geology, Federal Research Center of the Komi Science Center, Ural Branch of the Russian Academy of Sciences

Doctor of Chemical Sciences, Leading Researcher

Evgenia Vasilevna Cheban, Institute of Biology, Federal Research Center of the Komi Science Center, Ural Branch of the Russian Academy of Sciences

Researcher

Oksana Veniaminovna Raskosha, Institute of Biology, Federal Research Center of the Komi Science Center, Ural Branch of the Russian Academy of Sciences

Candidate of Biological Sciences, Head of Department

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