THE EFFECT OF GIBBERELLIC ACID (GA₃) ON GROWTH, PHOTOSYNTHETIC PIGMENTS, AND METAL BIOSORPTION IN THE WATER FERN Salvinia natans (L.) All. UNDER ZINC STRESS
Aim. This study investigates the impact of exogenous gibberellic acid (GA₃) on growth, photosynthetic pigment content, and zinc biosorption by sporophytes of the water fern Salvinia natans at both the initial and final stages of ontogeny. Methods. The ability of S. natans sporophytes to remove zi...
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National Academy of Sciences of Ukraine, Palladin Institute of Biochemistry
2025-06-01
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| Series: | Biotechnologia Acta |
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| Online Access: | https://biotechnology.kiev.ua/images/BTA/2025/3_2025/_Vasyuk3_2025.pdf |
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| author | V.A. Vasyuk M.M. Shcherbatiuk L.V. Voytenko K.O. Romanenko I.V. Kosakivska |
| author_facet | V.A. Vasyuk M.M. Shcherbatiuk L.V. Voytenko K.O. Romanenko I.V. Kosakivska |
| author_sort | V.A. Vasyuk |
| collection | DOAJ |
| description | Aim. This study investigates the impact of exogenous gibberellic acid (GA₃) on growth, photosynthetic pigment content, and zinc biosorption by sporophytes of the water fern Salvinia natans at both the initial and final stages of ontogeny.
Methods. The ability of S. natans sporophytes to remove zinc from the aquatic environment was assessed by analyzing water samples post-cultivation using a portable Macherey-Nagel PF-12 Plus photometer. Photosynthetic pigments were extracted with 100% acetone and quantified using a Jenway UV-6850 spectrophotometer (UK) at wavelengths of 662, 664, and 440.5 nm, with acetone serving as the control.
Results. At both the intensive growth stage and the phase of sorus formation and spore maturation, exogenous GA₃ enhanced fresh and dry biomass accumulation in S. natans sporophytes, increased chlorophyll content, and alleviated the adverse effects of zinc sulfate. These morphological and physiological improvements were more pronounced in mature sporophytes. The study also confirmed the ability of S. natans sporophytes to biosorb zinc ions from the aquatic environment, with zinc uptake in young sporophytes increasing by 10% upon GA₃ application.
Conclusions. During its intensive growth phase, S. natans effectively removes zinc compounds from water, demonstrating its potential for phytoremediation. Exogenous GA₃ (10⁻⁶ M) mitigates the toxic effects of zinc (10 mg L⁻¹), enhancing growth and photosynthetic pigment content. Observable phenotypic changes in response to zinc toxicity further suggest that S. natans could serve as a bioindicator of water pollution. |
| format | Article |
| id | doaj-art-75564cf5162e4ce4bd310f83d6398c5d |
| institution | DOAJ |
| issn | 2410-7751 2410-776X |
| language | English |
| publishDate | 2025-06-01 |
| publisher | National Academy of Sciences of Ukraine, Palladin Institute of Biochemistry |
| record_format | Article |
| series | Biotechnologia Acta |
| spelling | doaj-art-75564cf5162e4ce4bd310f83d6398c5d2025-08-20T02:47:47ZengNational Academy of Sciences of Ukraine, Palladin Institute of BiochemistryBiotechnologia Acta2410-77512410-776X2025-06-01183233310.15407/biotech18.03.023THE EFFECT OF GIBBERELLIC ACID (GA₃) ON GROWTH, PHOTOSYNTHETIC PIGMENTS, AND METAL BIOSORPTION IN THE WATER FERN Salvinia natans (L.) All. UNDER ZINC STRESSV.A. Vasyuk0 M.M. Shcherbatiuk1L.V. Voytenko2 K.O. Romanenko3I.V. Kosakivska4M.G. Kholodny Institute of Botany of the National Academy of Sciences of UkraineM.G. Kholodny Institute of Botany of the National Academy of Sciences of UkraineM.G. Kholodny Institute of Botany of the National Academy of Sciences of UkraineM.G. Kholodny Institute of Botany of the National Academy of Sciences of UkraineM.G. Kholodny Institute of Botany of the National Academy of Sciences of UkraineAim. This study investigates the impact of exogenous gibberellic acid (GA₃) on growth, photosynthetic pigment content, and zinc biosorption by sporophytes of the water fern Salvinia natans at both the initial and final stages of ontogeny. Methods. The ability of S. natans sporophytes to remove zinc from the aquatic environment was assessed by analyzing water samples post-cultivation using a portable Macherey-Nagel PF-12 Plus photometer. Photosynthetic pigments were extracted with 100% acetone and quantified using a Jenway UV-6850 spectrophotometer (UK) at wavelengths of 662, 664, and 440.5 nm, with acetone serving as the control. Results. At both the intensive growth stage and the phase of sorus formation and spore maturation, exogenous GA₃ enhanced fresh and dry biomass accumulation in S. natans sporophytes, increased chlorophyll content, and alleviated the adverse effects of zinc sulfate. These morphological and physiological improvements were more pronounced in mature sporophytes. The study also confirmed the ability of S. natans sporophytes to biosorb zinc ions from the aquatic environment, with zinc uptake in young sporophytes increasing by 10% upon GA₃ application. Conclusions. During its intensive growth phase, S. natans effectively removes zinc compounds from water, demonstrating its potential for phytoremediation. Exogenous GA₃ (10⁻⁶ M) mitigates the toxic effects of zinc (10 mg L⁻¹), enhancing growth and photosynthetic pigment content. Observable phenotypic changes in response to zinc toxicity further suggest that S. natans could serve as a bioindicator of water pollution.https://biotechnology.kiev.ua/images/BTA/2025/3_2025/_Vasyuk3_2025.pdfsalvinia natanszincgibberellinsgrowthphotosynthetic pigmentsbiosorption |
| spellingShingle | V.A. Vasyuk M.M. Shcherbatiuk L.V. Voytenko K.O. Romanenko I.V. Kosakivska THE EFFECT OF GIBBERELLIC ACID (GA₃) ON GROWTH, PHOTOSYNTHETIC PIGMENTS, AND METAL BIOSORPTION IN THE WATER FERN Salvinia natans (L.) All. UNDER ZINC STRESS Biotechnologia Acta salvinia natans zinc gibberellins growth photosynthetic pigments biosorption |
| title | THE EFFECT OF GIBBERELLIC ACID (GA₃) ON GROWTH, PHOTOSYNTHETIC PIGMENTS, AND METAL BIOSORPTION IN THE WATER FERN Salvinia natans (L.) All. UNDER ZINC STRESS |
| title_full | THE EFFECT OF GIBBERELLIC ACID (GA₃) ON GROWTH, PHOTOSYNTHETIC PIGMENTS, AND METAL BIOSORPTION IN THE WATER FERN Salvinia natans (L.) All. UNDER ZINC STRESS |
| title_fullStr | THE EFFECT OF GIBBERELLIC ACID (GA₃) ON GROWTH, PHOTOSYNTHETIC PIGMENTS, AND METAL BIOSORPTION IN THE WATER FERN Salvinia natans (L.) All. UNDER ZINC STRESS |
| title_full_unstemmed | THE EFFECT OF GIBBERELLIC ACID (GA₃) ON GROWTH, PHOTOSYNTHETIC PIGMENTS, AND METAL BIOSORPTION IN THE WATER FERN Salvinia natans (L.) All. UNDER ZINC STRESS |
| title_short | THE EFFECT OF GIBBERELLIC ACID (GA₃) ON GROWTH, PHOTOSYNTHETIC PIGMENTS, AND METAL BIOSORPTION IN THE WATER FERN Salvinia natans (L.) All. UNDER ZINC STRESS |
| title_sort | effect of gibberellic acid ga₃ on growth photosynthetic pigments and metal biosorption in the water fern salvinia natans l all under zinc stress |
| topic | salvinia natans zinc gibberellins growth photosynthetic pigments biosorption |
| url | https://biotechnology.kiev.ua/images/BTA/2025/3_2025/_Vasyuk3_2025.pdf |
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