Croucher Institute for Environmental Sciences, Hong Kong Baptist University, Hong Kong, P.R. China.
J Environ Sci Health B. 2009 Jun;44(5):461-71. doi: 10.1080/03601230902935139.
A pot trial was carried out to investigate the adverse effects of tetracycline (TC) on soil microbial communities, microbial activities, and the growth of ryegrass (Lolium perenne L). The results showed that the presence of TC significantly disturbed the structure of microbial communities and inhibited soil microbial activities in terms of urease, acid phosphatase and dehydrogenase (p < 0.05). Plant biomass was adversely influenced by TC, especially the roots with a reduction of 40% when compared with the control. Furthermore, TC decreased the assimilation of phosphorus by the plant although the concentration of phosphorus was increased by 20% due to decreased plant biomass. TC seemed to increase the concentration of dissolved organic carbon (by 20%) in soil. The findings implied that the agricultural use of animal manure or fishpond sediment containing considerable amounts of antibiotics may give rise to ecological risks.
一项盆栽试验研究了四环素（TC）对土壤微生物群落、微生物活性和黑麦草（Lolium perenne L.）生长的不良影响。结果表明，TC 的存在显著干扰了微生物群落的结构，并抑制了土壤微生物活性，如脲酶、酸性磷酸酶和脱氢酶（p < 0.05）。TC 对植物生物量产生了不利影响，特别是根的生物量减少了 40%，与对照相比。此外，尽管由于植物生物量减少，土壤中磷的浓度增加了 20%，但 TC 降低了植物对磷的同化。TC 似乎增加了土壤中溶解有机碳的浓度（增加了 20%）。研究结果表明，农业上使用含有大量抗生素的动物粪便或鱼塘沉积物可能会带来生态风险。
