We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Changes in carbohydrate metabolism and soil microorganisms under the stress of polyamide and polyethylene nanoplastics during rice (Oryza sativa L.) growth
AI summary Read the abstract
This study exposed rice seedlings to polyamide and polyethylene nanoplastics in soil and examined effects on carbohydrate metabolism and soil microbial communities during plant growth. Both nanoplastic types disrupted soil microorganisms and altered plant carbohydrate metabolism, with implications for crop productivity and soil health.
Nanoplastics (NPs) presence in agricultural soils can affect plant growth and impact the quality of agricultural products. To investigate the effect of polyamide (PA) NPs and polyethylene (PE) NPs on carbohydrate metabolism and soil microorganisms during rice growth, rice seedlings were exposed to soil containing 2 g/kg of 100 nm PA or 100 nm PE powder for 33 d. The results revealed that 100 nm PE reduced shoot length and dry weight of rice by 4.14 % and 15.68 %, respectively. Analyzing the expression of hexokinase-2 (HXK), phosphofructokinase-1 (PFK), pyruvate kinase (PK) and isocitrate dehydrogenase (IDH), which are four genes related to carbohydrate metabolism, 100 nm PA decreased the expression of PFK and increased the expression of PK and IDH. 100 nm PE increased the expression of HXK, PFK, PK, and IDH. The results of soil microorganisms showed that 100 nm PA significantly effects on 3 bacterial phyla (Bacteroidota, Deinococcota, and Desulfobacterota), whereas 100 nm PE significantly effects on phylum Rozellomycota, class Umbelopsidomycetes, and an unclassified Firmicutes. Our study provides direct evidence of the negative effects of PA and PE on rice, which may be important for assessing the risk of NPs on agroecosystems.
More Papers Like This
Effects of nanoplastics on the growth, transcription, and metabolism of rice (Oryza sativa L.) and synergistic effects in the presence of iron plaque and humic acid
AI summary Read the abstract
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.
Rhizosphere nutrient dynamics and physiological responses of Oryza sativa L. under polyethylene terephthalate microplastic stress
AI summary Read the abstract
Researchers exposed rice (Oryza sativa) to PET microplastics and found that the particles were absorbed by roots and translocated to aerial tissues, significantly inhibiting chlorophyll production, inducing oxidative stress (with malondialdehyde increasing by 175% at higher doses), and disrupting nitrogen, carbon, and phosphorus cycling genes in the rhizosphere.
Response of rice (Oryza sativa L.) roots to nanoplastic treatment at seedling stage
AI summary Read the abstract
Researchers exposed rice seedlings to polystyrene nanoplastics and found that the particles were taken up by the roots, aided by water-transporting proteins in the plant. The nanoplastics triggered oxidative stress, reduced root length, and disrupted carbon metabolism and hormone production in the seedlings. The study raises concerns that nanoplastic contamination in agricultural soils could affect crop growth and potentially enter the human food supply through rice consumption.
Life-long impacts of nanoplastics to rice plant (Oryza sativa L.): Decreased grain yield with perturbed metallome and soil microbiome
AI summary Read the abstract
Researchers studied how nano-sized PET plastic particles affect rice plants throughout their entire life cycle at concentrations found in real-world environments. They found that nanoplastic exposure reduced grain quality and yield, disrupted mineral nutrient balance, and significantly altered the soil microbial community. The study highlights a potential threat to global food security, since rice is a staple food for billions of people.
Integrated physiological, metabolomic, and transcriptomic responses of maize (Zea mays) and soybean (Glycine max) to nanoplastic-induced stress
AI summary Read the abstract
Researchers exposed maize and soybean crops to polyethylene and polypropylene nanoplastics in soil and found that high concentrations suppressed plant growth and caused oxidative stress in both species. The nanoplastics accumulated in plant roots and disrupted normal gene activity and metabolism, with soybeans being more sensitive than maize. These findings raise concerns about food crop quality and safety as nanoplastic contamination of agricultural soil increases.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.