Growth and Cellular Responses of Toxigenic Microcystis to Chloramphenicol-Stress at Various Environmentally-Relevant Nitrogen Levels
Growth and Cellular Responses of Toxigenic Microcystis to Chloramphenicol-Stress at Various Environmentally-Relevant Nitrogen Levels
复制标题
产毒微囊藻在各种环境相关氮水平下对氯霉素胁迫的生长和细胞反应
DOI：
10.1007/s00128-020-02935-5
复制
发表时间：
2020-07
影响因子：
2.7
通讯作者：
Hu Jiaqi
中科院分区：
文献类型：
--
作者：
Li Jieming;Luo Lin;Zhang Zhong;Hu Jiaqi
通过为期沿着20天的试验，研究了微囊藻与氯霉素（CAP）之间的氮（N）依赖性相互作用。结果表明，5 mg/L N显著缓解CAP对微囊藻生长的抑制作用，而50和0.5 mg/L N分别在微囊藻生长的早期（第8天前）和中后期加重CAP对微囊藻生长的抑制作用。在各氮水平下，CAP诱导的抗氧化防御和细胞损伤程度与各阶段的生长状态呈负相关，CAP降解与微囊藻的生长和谷胱甘肽合成动态一致，表明CAP胁迫下抗氧化防御、细胞损伤和CAP去除与氮依赖型微囊藻的生长密切相关。微囊藻毒素（MC）的生产和释放CAP压力下也依赖于N。虽然0.5mg/L N的CAP胁迫对微囊藻的生长有很大的抑制作用，但在微囊藻控制的蓝藻水华（MCB）和CAP共存时，应强调CAP的延迟损失和较高的MC释放。该研究对不同沃茨中MCBs-CAP共现的风险评估具有重要意义。
This study explored nitrogen (N)-dependent interaction between Microcystis and chloramphenicol (CAP) along 20 day-test. Results showed that 5 mg/L N largely alleviated inhibitory effects of CAP on Microcystis growth, while 50 and 0.5 mg/L N exacerbated growth-inhibition by CAP especially in early (before day 8) and mid–late stage, respectively. At each N level, CAP-induced antioxidant defense and cell damage extents were negatively correlated to growth state in each stage, and CAP-biodegradation coincided with Microcystis growth and glutathione synthesis dynamics, implying that antioxidant defense, cell damage and CAP-removal closely linked to N-dependent Microcystis growth under CAP-stress. Microcystin (MC)-production and -release under CAP-stress were also N-dependent. Although Microcystis growth was greatly-inhibited by prolonged CAP-stress at 0.5 mg/L N, delayed CAP-loss and high MC-release at 0.5 mg/L N should be emphasized during Microcystis-dominated cyanobacterial blooms (MCBs) and CAP co-occurrence. This study had great implication in risk assessment for MCBs–CAP co-occurrence in different waters.
登录
查看更多内容
影响因子：
2.9
作者：
M. Watanabe;K. Kaya;N. Takamura
通讯作者：
M. Watanabe;K. Kaya;N. Takamura
铜绿微囊藻和螺旋霉素污染物之间氮调节的相互作用
DOI：
10.1007/s11270-015-2412-8
发表时间：
2015-04
期刊：
Water, Air, and Soil Pollution
影响因子：
--
作者：
Liu, Ying;Chen, Shi;Zhang, Jian;Gao, Baoyu
通讯作者：
Gao, Baoyu
DOI：
10.2166/aqua.2011.069
发表时间：
2011-01-01
影响因子：
4.3
作者：
Li, Jieming;Shimizu, Kazuya;Sugiura, Norio
通讯作者：
Sugiura, Norio
影响因子：
6.8
作者：
T. Stoichev;M. S. Baptista;M. C. Basto;V. Vasconcelos;M. Vasconcelos
通讯作者：
T. Stoichev;M. S. Baptista;M. C. Basto;V. Vasconcelos;M. Vasconcelos
影响因子：
5.1
作者：
Briand, Enora;Yepremian, Claude;Quiblier, Catherine
通讯作者：
Quiblier, Catherine