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简介：
A knowledge gap concerning the potential effects of extracellular polymeric substances (EPS), a common organic material but highly variable in their composition of microbial origin, on the fate and phytotoxicity of silver nanoparticles (AgNP) still remains. A 48-h root elongation toxicity test showed that AgNP toxicity to wheat Triticum aestivum L. was dramatically alleviated by EPS isolated from Pseudomonas putida, as revealed by 7–59% increase in relative root elongation (RRE), 8–99% increase in root weight, 27–32% decrease in malondialdehyde (MDA) content and 11–43% decrease in H2O2 content compared to the treatment with AgNP in the absence of EPS.
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