{"title":"Nano Silicon as a Potential Seed Priming Agent for Enhancing Resilience against Moisture Stress in Finger Millet (Eleusine coracana L.)","authors":"Kathiravan Muthuselvan, Vanitha Chinnapaiyan, Umarani Renganathan, Poovarasu Kesavamoorthy, Gayathry Gunavijayan, Sathiya Kumaresan, Yuvaraj Muthuraman, Ayyadurai Pachamuthu","doi":"10.1007/s12633-025-03268-w","DOIUrl":null,"url":null,"abstract":"<div><p>Moisture stress is one of the detrimental abiotic stressors that impacts growth and productivity of finger millet. This study investigated the plant biological responses of finger millet in various intensity of drought (0 bar, -5 bar, -6 bar, -7 bar and -8 bar) induced by PEG 6000 and nano priming treatment with SiO₂ nano particles. The findings indicate that increasing moisture stress significantly reduces all seed and seedling quality parameters. Under non-moisture stress conditions (0 bar), germination reached 82%, whereas severe moisture stress (-8 bar) led to a dramatic decrease to 41%. As moisture stress intensified, there was a corresponding decline in germination rates and seedling quality parameters characterized by seedling length, dry matter production, and vigor. The biochemical attributes such as tissue water content and chlorophyll pigment diminished significantly whereas electrolyte leakage and proline elevated under increasing moisture stress. Among the different ranges of drought, the optimal stress level (-7 bar) was selected based on germination percent (≤ 65% and ≥ 50%) to assess the response of finger millet to SiO₂ nano priming treatment under that stress condition. The results revealed that control seeds exhibited 82% germination in non-stress (0 bar) conditions, which dropped to 62% under -7 bar stress. In contrast, seeds primed with SiO₂ nanoparticles @ 500 mg/L registered 96% germination, 13.4 cm root length under non-stress and 85% germination, 11.3 cm root length under -7 bar stress condition. Primed seeds also exhibited maximum tissue water content in shoot (84.2%), root (88.6%), total chlorophyll content (9.35 µg/g) and also enhanced the proline accumulation and antioxidants such as catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD), under moisture stress. These results highlight the potential of SiO₂ nanoparticle priming to enhance resilience in finger millet against moisture stress by promoting better germination, seedling vigour and antioxidant enzyme activity.</p></div>","PeriodicalId":776,"journal":{"name":"Silicon","volume":"17 5","pages":"1177 - 1194"},"PeriodicalIF":2.8000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Silicon","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12633-025-03268-w","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Moisture stress is one of the detrimental abiotic stressors that impacts growth and productivity of finger millet. This study investigated the plant biological responses of finger millet in various intensity of drought (0 bar, -5 bar, -6 bar, -7 bar and -8 bar) induced by PEG 6000 and nano priming treatment with SiO₂ nano particles. The findings indicate that increasing moisture stress significantly reduces all seed and seedling quality parameters. Under non-moisture stress conditions (0 bar), germination reached 82%, whereas severe moisture stress (-8 bar) led to a dramatic decrease to 41%. As moisture stress intensified, there was a corresponding decline in germination rates and seedling quality parameters characterized by seedling length, dry matter production, and vigor. The biochemical attributes such as tissue water content and chlorophyll pigment diminished significantly whereas electrolyte leakage and proline elevated under increasing moisture stress. Among the different ranges of drought, the optimal stress level (-7 bar) was selected based on germination percent (≤ 65% and ≥ 50%) to assess the response of finger millet to SiO₂ nano priming treatment under that stress condition. The results revealed that control seeds exhibited 82% germination in non-stress (0 bar) conditions, which dropped to 62% under -7 bar stress. In contrast, seeds primed with SiO₂ nanoparticles @ 500 mg/L registered 96% germination, 13.4 cm root length under non-stress and 85% germination, 11.3 cm root length under -7 bar stress condition. Primed seeds also exhibited maximum tissue water content in shoot (84.2%), root (88.6%), total chlorophyll content (9.35 µg/g) and also enhanced the proline accumulation and antioxidants such as catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD), under moisture stress. These results highlight the potential of SiO₂ nanoparticle priming to enhance resilience in finger millet against moisture stress by promoting better germination, seedling vigour and antioxidant enzyme activity.
期刊介绍：
The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.
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