Nano-Nd2O3 reduced soil bacterial community function by altering the relative abundance of rare and sensitive taxa

• Published in: Environmental science and pollution research international Vol. 30; no. 32; pp. 78332 - 78338
• Main Authors: Xu, Yongli, Zhu, Liyao, Vukanti, Raja, Wang, Jichen, Shen, Congcong, Ge, Yuan
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.07.2023; Springer Nature B.V
• Subjects: Abundance; Agricultural industry; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Bacteria; Carbon cycle; Composition; Cycles; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Environmental impact; Environmental science; Enzymes; Glucosidase; N-Acetylglucosaminidase; Nanoparticles; Nitrogen cycle; Nutrient cycles; Nutrients; Relative abundance; Research Article; Soil amendment; Soil microorganisms; Soil nutrients; Soils; Waste Water Technology; Water Management; Water Pollution Control; Nanoparticles; Alpha diversity; Nano-Nd; Enzyme activity; Soil; Bacterial community; O
• ISSN: 1614-7499; 0944-1344; 1614-7499
• DOI: 10.1007/s11356-023-27979-y

Nanoparticulate-Nd 2 O 3 (nano-Nd 2 O 3 ) has been excessively utilized in agriculture, industry, and medicine. Hence, nano-Nd 2 O 3 can have environmental implications. However, the impact of nano-Nd 2 O 3 on alpha diversity, composition, and function of soil bacterial communities has not been thoroughly evaluated. We amended soil to achieve different concentrations of nano-Nd 2 O 3 (0, 10, 50, and 100 mg kg −1 soil) and incubated the mesocosms for 60 days. On days 7 and 60 of the experiment, we measured the effect of nano-Nd 2 O 3 on alpha diversity and composition of soil bacterial community. Further, the effect of nano-Nd 2 O 3 on the function of soil bacterial community was assessed based on changes in the activities of the six potential enzymes that mediate the cycling of nutrients in the soil. Nano-Nd 2 O 3 did not alter the alpha diversity and composition of the soil bacterial community; however, it negatively affected community function in a dose-dependent manner. Specifically, the activities of β -1,4-glucosidase and β -1,4-n-acetylglucosaminidase that mediate soil carbon and nitrogen cycling, respectively, were significantly affected on days 7 and 60 of the exposure. The effect of nano-Nd 2 O 3 on the soil enzymes correlated with changes in relative abundances of the rare and sensitive taxa, viz., Isosphaerales , Isosphaeraceae , Ktedonobacteraceae , and Streptomyces . Overall, we provide information for the safe implementation of technological applications that use nano-Nd 2 O 3 .