Complexation and immobilization of arsenic in maize using green synthesized silicon nanoparticles (SiNPs)
Abstract Arsenic (As) is a heavy metal that is toxic to both plants and animals. Silicon nanoparticles (SiNPs) can alleviate the detrimental effects of heavy metals on plants, but the underlying mechanisms remain unclear. The study aims to synthesize SiNPs and reveal how they promote plant health in...
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Nature Portfolio
2024-03-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-56924-3 |
| _version_ | 1827316030758715392 |
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| author | Oyinade A. David Ayomide H. Labulo Ibrahim Hassan Idowu Olawuni Charles O. Oseghale Augustine D. Terna Olamilekan O. Ajayi Samuel A. Ayegbusi Michael O. Owolabi |
| author_facet | Oyinade A. David Ayomide H. Labulo Ibrahim Hassan Idowu Olawuni Charles O. Oseghale Augustine D. Terna Olamilekan O. Ajayi Samuel A. Ayegbusi Michael O. Owolabi |
| author_sort | Oyinade A. David |
| collection | DOAJ |
| description | Abstract Arsenic (As) is a heavy metal that is toxic to both plants and animals. Silicon nanoparticles (SiNPs) can alleviate the detrimental effects of heavy metals on plants, but the underlying mechanisms remain unclear. The study aims to synthesize SiNPs and reveal how they promote plant health in Arsenic-polluted soil. 0 and 100% v/v SiNPs were applied to soil, and Arsenic 0 and 3.2 g/ml were applied twice. Maize growth was monitored until maturity. Small, irregular, spherical, smooth, and non-agglomerated SiNPs with a peak absorbance of 400 nm were synthesized from Pycreus polystachyos. The SiNPs (100%) assisted in the development of a deep, prolific root structure that aided hydraulic conductance and gave mechanical support to the maize plant under As stress. Thus, there was a 40–50% increase in growth, tripled yield weights, and accelerated flowering, fruiting, and senescence. SiNPs caused immobilization (As(III)=SiNPs) of As in the soil and induced root exudates Phytochelatins (PCs) (desGly-PC2 and Oxidized Glutathione) which may lead to formation of SiNPs=As(III)–PCs complexes and sequestration of As in the plant biomass. Moreover, SiNPs may alleviate Arsenic stress by serving as co-enzymes that activate the antioxidant-defensive mechanisms of the shoot and root. Thus, above 70%, most reactive ROS (OH) were scavenged, which was evident in the reduced MDA content that strengthened the plasma membrane to support selective ion absorption of SiNPs in place of Arsenic. We conclude that SiNPs can alleviate As stress through sequestration with PCs, improve root hydraulic conductance, antioxidant activity, and membrane stability in maize plants, and could be a potential tool to promote heavy metal stress resilience in the field. |
| first_indexed | 2024-04-24T23:07:41Z |
| format | Article |
| id | doaj.art-0e047264e3c94015b1c79e38a4f675c0 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-24T23:07:41Z |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-0e047264e3c94015b1c79e38a4f675c02024-03-17T12:22:37ZengNature PortfolioScientific Reports2045-23222024-03-0114111310.1038/s41598-024-56924-3Complexation and immobilization of arsenic in maize using green synthesized silicon nanoparticles (SiNPs)Oyinade A. David0Ayomide H. Labulo1Ibrahim Hassan2Idowu Olawuni3Charles O. Oseghale4Augustine D. Terna5Olamilekan O. Ajayi6Samuel A. Ayegbusi7Michael O. Owolabi8Department of Plant Science and Biotechnology, Federal University Oye-EkitiDepartment of Chemistry, Federal University of LafiaDepartment of Chemistry, Federal University of LafiaDepartment of Biochemistry, Obafemi Awolowo UniversityDepartment of Chemistry, Federal University of LafiaDepartment of Chemistry, Federal University of TechnologyDepartment of Plant Science and Biotechnology, Federal University Oye-EkitiDepartment of Plant Science and Biotechnology, Federal University Oye-EkitiDepartment of Plant Science and Biotechnology, Federal University Oye-EkitiAbstract Arsenic (As) is a heavy metal that is toxic to both plants and animals. Silicon nanoparticles (SiNPs) can alleviate the detrimental effects of heavy metals on plants, but the underlying mechanisms remain unclear. The study aims to synthesize SiNPs and reveal how they promote plant health in Arsenic-polluted soil. 0 and 100% v/v SiNPs were applied to soil, and Arsenic 0 and 3.2 g/ml were applied twice. Maize growth was monitored until maturity. Small, irregular, spherical, smooth, and non-agglomerated SiNPs with a peak absorbance of 400 nm were synthesized from Pycreus polystachyos. The SiNPs (100%) assisted in the development of a deep, prolific root structure that aided hydraulic conductance and gave mechanical support to the maize plant under As stress. Thus, there was a 40–50% increase in growth, tripled yield weights, and accelerated flowering, fruiting, and senescence. SiNPs caused immobilization (As(III)=SiNPs) of As in the soil and induced root exudates Phytochelatins (PCs) (desGly-PC2 and Oxidized Glutathione) which may lead to formation of SiNPs=As(III)–PCs complexes and sequestration of As in the plant biomass. Moreover, SiNPs may alleviate Arsenic stress by serving as co-enzymes that activate the antioxidant-defensive mechanisms of the shoot and root. Thus, above 70%, most reactive ROS (OH) were scavenged, which was evident in the reduced MDA content that strengthened the plasma membrane to support selective ion absorption of SiNPs in place of Arsenic. We conclude that SiNPs can alleviate As stress through sequestration with PCs, improve root hydraulic conductance, antioxidant activity, and membrane stability in maize plants, and could be a potential tool to promote heavy metal stress resilience in the field.https://doi.org/10.1038/s41598-024-56924-3Arsenic toxicityImmobilisationMaize growth and yieldPhytostabilizationSilicon nanoparticles |
| spellingShingle | Oyinade A. David Ayomide H. Labulo Ibrahim Hassan Idowu Olawuni Charles O. Oseghale Augustine D. Terna Olamilekan O. Ajayi Samuel A. Ayegbusi Michael O. Owolabi Complexation and immobilization of arsenic in maize using green synthesized silicon nanoparticles (SiNPs) Scientific Reports Arsenic toxicity Immobilisation Maize growth and yield Phytostabilization Silicon nanoparticles |
| title | Complexation and immobilization of arsenic in maize using green synthesized silicon nanoparticles (SiNPs) |
| title_full | Complexation and immobilization of arsenic in maize using green synthesized silicon nanoparticles (SiNPs) |
| title_fullStr | Complexation and immobilization of arsenic in maize using green synthesized silicon nanoparticles (SiNPs) |
| title_full_unstemmed | Complexation and immobilization of arsenic in maize using green synthesized silicon nanoparticles (SiNPs) |
| title_short | Complexation and immobilization of arsenic in maize using green synthesized silicon nanoparticles (SiNPs) |
| title_sort | complexation and immobilization of arsenic in maize using green synthesized silicon nanoparticles sinps |
| topic | Arsenic toxicity Immobilisation Maize growth and yield Phytostabilization Silicon nanoparticles |
| url | https://doi.org/10.1038/s41598-024-56924-3 |
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