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Single and combined effect of tetracycline and polyethylene microplastics on two drought contrasting cultivars of Oryza sativa L. (Rice) under drought stress

Environmental Toxicology and Pharmacology 2023 25 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Shuang Zhang, Shuang Zhang, Kiran Yasmin Khan, Kiran Yasmin Khan, Kiran Yasmin Khan, Kiran Yasmin Khan, Barkat Ali, Xiaoqiang Cui, Shuang Zhang, Barkat Ali, Barkat Ali, Shuang Zhang, Kiran Yasmin Khan, Shuang Zhang, Barkat Ali, Shuang Zhang, Kiran Yasmin Khan, Kiran Yasmin Khan, Shuang Zhang, Hafiz Usman Ghani, Hafiz Usman Ghani, Barkat Ali, Qian Xia, Lijiang Fu, Kiran Yasmin Khan, Barkat Ali, Xiaoqiang Cui, Lijiang Fu, Mohammad Jahid ul Islam Shohag, Mohammad Jahid ul Islam Shohag, Xiaoqiang Cui, Zeshan Ali Xiaoqiang Cui, Xiaoqiang Cui, Shuang Zhang, Kiran Yasmin Khan, Shuang Zhang, Xiaoqiang Cui, Kiran Yasmin Khan, Qian Xia, Xiaoqiang Cui, Ya Guo, Jinglu Tan, Ya Guo, Lijiang Fu, Zeshan Ali Lijiang Fu, Ya Guo, Ya Guo, Zeshan Ali

Summary

Researchers studied how the combination of the antibiotic tetracycline and polyethylene microplastics affects two rice varieties under drought conditions. They found that drought-resistant and drought-sensitive rice cultivars responded differently — the sensitive variety accumulated more of the antibiotic under drought stress. Metabolic analysis revealed that drought combined with these pollutants caused widespread disruption of plant metabolic processes, suggesting that climate stress and plastic pollution together may pose compounded risks to crop production.

Polymers

Co-exposure of tetracycline (TC) and polyethylene microplastic (MP-PE) pollution might result in more intricate effects on rice growth and grain quality. In present study, two different rice cultivars of contrasting drought tolerance, Hanyou73 (H73, drought-resistant) and Quanyou280 (Q280, drought-sensitive) were grown on MP-PE and TC-contaminated soils under drought. It was found that drought stress had different influence on TC accumulation in the two rice cultivars. H73 accumulated more TC in leaves and grains without drought stress while Q280 accumulated more TC under drought stress. Furthermore, metabolomics results demonstrated that under drought stress, about 80 % of metabolites in H73 and 95 % in Q280 were down-regulated as compared to non-drought treatments. These findings provide insights into the effects of TC and MP-PE with and without drought stress on potential risks to rice growth and grain quality, which has implications on rice production and cultivar election under multiple-stress conditions.

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