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- Title
纳米银对蒙古黄芪种子和幼苗的毒性研究与数据挖掘分析.
- Authors
徐蓉蓉; 高静; 魏思敏; 关思静; 葛甜甜; 王楠; 唐志书; 宋忠兴
- Abstract
To explore the influence of silver nanoparticles (AgNPs) on seed germination and seedling growth of A. mongholicus, and to discuss whether the impact of AgNPs on a single species is consistent with the trend of data mining. A. mongholicus seeds were cultured at nine different concentration levels of AgNPs solution. Seed germination was observed and recorded every day, and the parameters of germination and growth were measured after the observation. Based on the experimental results and literature data, the comparative analysis was performed. As the concentration of AgNPs increased, the total germination percentage of A. mongholicus was inhibited, and it decreased significantly at high concentration (P<0.05). The mean of germination time at concentrations of 600 mg·L-1 and 1 000 mg·L-1 was significantly higher than other treatments (P<0.05). When the concentration increased to 400 ~ 1 000 mg·L-1, the radicle length, cotyledon length and cotyledon width were significantly inhibited, which were significantly lower than that of the control group (P<0.05). The hypocotyl length wasn't influenced by the change of AgNPs concentration. The contents of chlorophyll and nitrogen began to decrease significantly when the AgNPs concentration was at 200 mg·L-1(P<0.05). Compared with the control group, the fresh weight and dry weight of each treatment group (except 20 mg·L-1) were significantly reduced (P<0.05). The antioxidant enzymes activity trends of catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) of aboveground and underground portions of seedlings were basically the same. Calculation of the inhibition rate showed that AgNPs of 600 mg·L-1 and 1 000 mg·L-1 had toxic effects on A. mongholicus. In general, the experimental results were partially consistent with the trend of data mining models. Comparing several analysis models, it was found that the results of membership function analysis and principal component analysis were consistent, and meta analysis was more suitable for single species trend prediction than redundancy analysis. AgNPs inhibited the germination of A. mongholicus seeds, low concentration AgNPs had little effect on seedlings, and high concentration seriously inhibited seedling growth.
- Publication
Asian Journals of Ecotoxicology, 2021, Vol 16, Issue 5, p301
- ISSN
1673-5897
- Publication type
Article
- DOI
10.7524/AJE.1673-5897.20200911002