Effects of minocycline and its degradation products on the growth of Microcystis aeruginosa.
Effects of minocycline and its degradation products on the growth of Microcystis aeruginosa.
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DOI：
10.1016/j.ecoenv.2010.10.015
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发表时间：
2011-03
影响因子：
6.8
通讯作者：
T. Stoichev;M. S. Baptista;M. C. Basto;V. Vasconcelos;M. Vasconcelos
中科院分区：
文献类型：
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作者：
T. Stoichev;M. S. Baptista;M. C. Basto;V. Vasconcelos;M. Vasconcelos
研究了铜绿微囊藻（Microcystis aeruginosa）对米诺环素（MNC）去除速率（非生物降解、物理结合或细胞化学转化）的影响，以及MNC及其降解产物对蓝藻的毒性。大多数工作是在培养基中进行的，在存在或不存在M。铜绿。随着MNC初始浓度的增加，MNC在培养基中的非生物降解速率显著降低。渗出液不影响培养基中MNC的降解速率。对于浓度≥0.48μM，在存在M的情况下，培养基中MNC的去除速率更快。铜绿。生物MNC去除通过细胞的物理结合（10%）和化学转化发生。MNC的EC50和EC20对M.铜绿假单胞菌的浓度分别为0.92和0.13μM。有趣的是，MNC降解产物可能促进M.铜绿菌生长
This work aimed to investigate the influence of Microcystis aeruginosa on the rate of minocycline (MNC) removal (abiotic degradation, physical binding or chemical transformation by cells) and the toxicity of MNC and its degradation products to the cyanobacterium. Most of the work was carried out in culture media in the presence or in the absence of M. aeruginosa. The rate of the MNC abiotic degradation in culture media strongly decreased with the increase of the MNC initial concentration. The exudates did not influence the rate of MNC degradation in the media. For concentrations ≥0.48μM, the rate of the MNC removal from the media was faster in the presence of M. aeruginosa. Biotic MNC removal occurs by both physical binding by the cells (10%) and chemical transformations. EC50and EC20for MNC on the growth of M. aeruginosa were 0.92 and 0.13μM, respectively. Interestingly, MNC degradation products might promote M. aeruginosa growth.