Uptake, translocation and distribution of three veterinary antibiotics in Zea mays L.
Uptake, translocation and distribution of three veterinary antibiotics in Zea mays L.
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玉米中三种兽用抗生素的摄取、易位和分布。
DOI：
10.1016/j.envpol.2019.03.110
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发表时间：
2019-08
影响因子：
8.9
通讯作者：
Zhaojun Li
中科院分区：
文献类型：
--
作者：
Cheng Zhang;Jianming Xue;Dengmiao Cheng;Yao Feng;Yuanwang Liu;Hesham M. Aly;Zhaojun Li
抗生素在农作物中的残留问题日益受到研究界和公众的关注。在受控环境条件下研究了3种不同的兽用抗生素（VA）在玉米植株中的吸收、转运和分布。（玉米，世界上第三大作物，特别是在中国）和相关机制。混合VA的分布图显示，最高的RCF金霉素（CTC）和磺胺甲恶唑（SMZ）的根浓度因子（Root Concentration Factor）值在0.5-2.0 mm范围内（细胞分裂区），磺胺噻唑（ST）在6.0- 8.0mm范围内的RCF值最高（伸长区）根尖（0.5-10.0 mm）暴露于VA 120 h后。单用抗生素时，CTC的TF大于1.0，SMZ和ST的TF小于1.0。而在添加混合VA时，三种VA的TF在暴露结束时均大于1.0。玉米对抗生素的耗散也通过在封闭系统中收获所有植物部分来证明。通过在培养液中添加多种呼吸抑制剂，研究了玉米吸收和转运VA的可能机制。水杨基异羟肟酸（SHAM）和叠氮化钠（NaN 3）对VA的RCF有明显的抑制作用，表明VA的摄取是一个积极的过程。HgCl 2处理下CTC和SMZ的TF和茎浓缩因子（SCF）结果表明，VA的转运与玉米水通道蛋白的活性有关。这项研究的结果将有显着的影响，管理作物食品污染的VA和抗生素在环境中的植物修复技术的发展。
Frequently detected residuals of antibiotics in crops has drawn increasing attention from research community and the general public. This study was conducted under the controlled environmental conditions to investigate the uptake, translocation and distribution of three different veterinary antibiotics (VAs) in plants ofZea maysL. (maize, the third largest crop in the world, especially in China) and the associated mechanisms. The distribution color-maps of mixed-VAs showed that the highest RCF (root concentration factors) values of chlortetracycline (CTC) and sulfamethoxazole (SMZ) were found in the 0.5–2.0 mm zone (cell division zone), while the highest RCF value of sulfathiazole (ST) was in the 6.0–8.0 mm zone (elongation zone) of root tips (0.5–10.0 mm) after 120 h of exposure to VAs. The translocation factor (TF) of CTC was greater than 1.0, but the TFs of SMZ and ST were less than 1.0 under addition of single antibiotic. However, the TFs of three VAs were all greater than 1.0 at the end of exposure under addition of mixed-VAs. The dissipation of antibiotics by maize was also demonstrated by harvesting all plant parts in an enclosed system. The possible mechanisms for uptake and translocation of VAs in maize were investigated by adding multiple respiration inhibitors into the culture solution. The RCFs of VAs were suppressed heavily by salicylhydroxamic acid (SHAM) and sodium azide (NaN3), which indicates that the uptake of VAs was an active process. The results of TFs and stem concentration factors (SCFs) of CTC and SMZ in HgCl2treatments revealed that the translocation of VAs was associated with the aquaporin activity in maize. The findings from this study will have significant implications for the management of crop food contamination by VAs and for the development of phytoremediation technology for antibiotics in the environment.
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影响因子：
3.3
作者：
Xin Wang;M. Oh;K. Sakata;S. Komatsu
通讯作者：
Xin Wang;M. Oh;K. Sakata;S. Komatsu
影响因子：
12.8
作者：
Gulkowska, A.;Leung, H. W.;Lam, Paul K. S.
通讯作者：
Lam, Paul K. S.
影响因子：
6.1
作者：
Kang, Dong Hee;Gupta, Satish;Rohwer, Charlie
通讯作者：
Rohwer, Charlie
影响因子：
8.9
作者：
X. Zhan;X. Liang;Guohua Xu;Lixiang Zhou
通讯作者：
X. Zhan;X. Liang;Guohua Xu;Lixiang Zhou
DOI：
--
发表时间：
2007
期刊：
--
影响因子：
--
作者：
M. Grote;C. Schwake-Anduschus;R. Michel;H. Stevens;W. Heyser;G. Langenkämper;T. Betsche;M. Freitag
通讯作者：
M. Grote;C. Schwake-Anduschus;R. Michel;H. Stevens;W. Heyser;G. Langenkämper;T. Betsche;M. Freitag