Mitigating arsenic toxicity in bamboo using silica-titania nanohybrids: Enhanced antioxidant defense, phytochelatin synthesis, and chloroplast integrity for improved crop resilience
INDUSTRIAL CROPS AND PRODUCTS, cilt.242, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 242
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.indcrop.2026.122970
- Dergi Adı: INDUSTRIAL CROPS AND PRODUCTS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, Geobase, INSPEC, Directory of Open Access Journals, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Recep Tayyip Erdoğan Üniversitesi Adresli: Evet
Özet
Arsenic contamination threatens agricultural sustainability and food safety. This study evaluated the efficacy of silicon dioxide (SiO2) and titanium dioxide (TiO2) nanoparticles (NPs), applied individually and in combination, to mitigate arsenic toxicity in dwarf white-striped bamboo (Pleioblastus pygmaeus). In vitro experiments exposed bamboo explants to arsenic (0-120 mg L-1) alongside treatments of SiO2 NPs, TiO2NPs, or their combination (100 mg L-1 each). The combined NP treatment was most effective, reducing arsenic accumulation in roots, stems, and leaves by 46%, 48%, and 46%, respectively. This reduction was linked to enhanced phytochelatin synthesis (61%), metal chelation (80%), and proline accumulation (60%). Oxidative stress was alleviated, with decreases in hydrogen peroxide (49%), superoxide radicals (51%), and malondialdehyde (39%), alongside increased activity of antioxidant enzymes and glyoxalase. Photosynthetic pigments (chlorophyll a, b, and carotenoids) increased by 79-105%, and secondary metabolites (phenolics and flavonoids) rose by 41-42%. These improvements translated to a 54% increase in shoot dry weight and a 44% increase in root dry weight. Nano-particle applications also reduced arsenic translocation and bioaccumulation factors to 8.5%. This study demonstrates the synergistic potential of SiO2-TiO2nanohybrids to enhance arsenic tolerance in bamboo, offering a promising nano-enabled strategy for sustainable crop protection and phytoremediation.