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Alleviation ofNanoplastic Stress in Rice: Evidencefrom Biochemical, Cytological, Physiological, and Transcriptome Analysis
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Researchers investigated nanoplastic stress responses and mitigation strategies in two rice cultivars through biochemical, cytological, physiological, and transcriptome analyses, testing whether molybdenum oxide nanoparticles could alleviate toxicity via heteroaggregation with nanoplastics. Results confirmed nMo reduced oxidative damage markers and that the wild-derived cultivar S18 maintained better physiological function under combined nMo and nanoplastic treatment than cultivated rice.
Nanoplastic (NP) pollution in terrestrial ecosystems is an emerging global concern, but little is known about its effects on crops and how to manage it. Here, we used two rice cultivars, S18 (from Oryza rufipogon) and MeiXiangZhan (MXZ) (cultivated rice), to study their tolerance against NP and the alleviation of NP through MoO3 nanoparticles (nMo). nMo was found to be capable of heteroaggregating with NP through SEM observation. Moreover, SEM and TEM showed that S18 exhibited a better-protected cellular structure than MXZ. Furthermore, physiological parameters, including photosynthetic pigments, antioxidant enzyme activities, lignin contents, Mo contents, along with H2O2 and MDA contents (decrease by 9 and 19% under nMo+NP compared to NP treatment), have shown that nMo was capable of alleviating NP stress, and S18 was better in maintaining physiological homeostasis. RNA-seq revealed that nMo and S18 activated signal transduction pathways and resistance-related genes under NP stress. Interestingly, PRX44 has a 4.95 log2FC of higher expression in S18 than in MXZ in NP. Overall, this research has provided insights into the future applications in enhancing stress resistance and mitigating NP in agricultural ecosystems. These two remedies were cost-effective and environmentally favorable, offering significant potential benefits for agricultural sustainability.
More Papers Like This
Alleviation ofNanoplastic Stress in Rice: Evidencefrom Biochemical, Cytological, Physiological, and Transcriptome Analysis
AI summary Read the abstract
Researchers used biochemical, cytological, physiological, and transcriptomic analyses to investigate nanoplastic stress in two rice cultivars and the mitigating effect of molybdenum oxide nanoparticles (nMo), finding that nMo heteroaggregates with nanoplastics and reduces oxidative stress markers including H2O2 and MDA by 9-19%. The wild-derived cultivar S18 showed superior cellular protection compared to cultivated MeiXiangZhan, suggesting genetic variation in nanoplastic tolerance.
Alleviation of Nanoplastic Stress in Rice: Evidence from Biochemical, Cytological, Physiological, and Transcriptome Analysis
AI summary Read the abstract
Researchers studied how MoO3 nanoparticles alleviate nanoplastic stress in two rice cultivars, finding that MoO3 heteroaggregates with nanoplastics, reducing their uptake and mitigating biochemical, cytological, and transcriptomic stress responses in rice seedlings.
Oryza rufipogon and nanoparticles mitigate nanoplastic toxicity by modulating lignin, cell wall thickening, and carbohydrate metabolism
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Researchers compared wild rice (Oryza rufipogon) and cultivated rice under nanoplastic stress, finding that wild rice suffered far less growth and chlorophyll loss due to greater lignin deposition, stronger antioxidant defenses, and activation of cell wall-strengthening genes, while adding nano-selenium partially restored growth in both varieties.
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This study examined how nanoplastics affect rice plant growth, finding that the tiny particles were absorbed by roots and entered plant cells. Nanoplastic exposure reduced important enzyme activity and protein levels in roots, disrupting normal plant metabolism. The presence of iron plaque and humic acid in the soil changed how much nanoplastic the plants took up, suggesting that real-world soil conditions play a key role in how crops are affected.
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