How can fertilization regimes and durations shape earthworm gut microbiota in a long-term field experiment?
文献类型：期刊论文
| 作者 | Bi, Qing-Fang; Jin, Bing-Jie; Zhu, Dong; Jiang, Yu-Gen; Zheng, Bang-Xiao; O'Connor, Patrick; Yang, Xiao-Ru; Richter, Andreas; Lin, Xian-Yong; Zhu, Yong-Guan |
| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2021 |
| 卷号 | 177页码:260-269 |
| ISSN号 | 0891-5849 |
| 关键词 | Polyhalogenated catechols Sodium azide Zwitt-azido cleavage 3(2H)-Furanone Azido-chloro-O-Semiquinone radicals Electron spin resonance |
| 英文摘要 | We have shown previously that exposing bacteria to tetrachlorocatechol (TCC) and sodium azide (NaN3) together causes synergistic cytotoxicity in a biphasic mode. However, the underlying chemical mechanism remains unclear. In this study, an unexpected ring-contraction 3(2H)-furanone and two quinoid-compounds were identified as the major and minor reaction products, respectively; and two unusual azido-substituted chloro-O-semiquinone radicals were detected and characterized as the major radical intermediates by complementary applications of direct ESR, HPLC/ESI-Q-TOF and high-resolution MS studies with nitrogen-15 isotope-labeled NaN3. Taken together, we proposed a novel molecular mechanism for the reaction of TCC/NaN3: N3- may attack on tetrachloro-O-semiquinone radical, forming two transient 4-azido-3,5,6-trichloro- and 4,5-diazido-3,6-dichloro-Osemiquinone radicals, consecutively. The second-radical intermediate may either undergo an unusual zwitt-azido cleavage to form the less-toxic ring-contraction 3(2H)-furanone product, or further oxidize to form the more toxic quinoid-product 4-amino-5-azido-3,6-dichloro-O-benzoquinone. A good correlation was observed between the biphasic formation of this toxic quinone due to the two competing decomposition pathways of the radical intermediate and the biphasic synergism between TCC and NaN3, which are dependent on their molar-ratios. This is the first report of detection and identification of two unique azido-substituted chloro-O-semiquinone radicals, and an unprecedented ring-contraction mechanism via an unusually mild and facile zwitt-azido rearrangement. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/46737]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China 2.Univ Vienna, Ctr Microbiol & Environm Syst Sci, Dept Microbiol & Ecosyst Sci, Div Terr Ecosyst Res, Vienna, Austria 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 4.Fuyang Agr Technol Popularizat Ctr, Hangzhou 311400, Peoples R China 5.[Zheng, Bang-Xiao 6.Univ Helsinki, Fac Biol & Environm Sci, Ecosyst & Environm Res Programme, Lahti 15140, Finland 7.Univ Adelaide, Ctr Global Food & Resources, Adelaide, SA 5005, Australia 8.Zhejiang Univ, Coll Environm & Resource Sci, MOE Key Lab Environm Remediat & Ecol Hlth, Hangzhou 310058, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bi, Qing-Fang,Jin, Bing-Jie,Zhu, Dong,et al. How can fertilization regimes and durations shape earthworm gut microbiota in a long-term field experiment?[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2021,177:260-269. |
| APA | Bi, Qing-Fang.,Jin, Bing-Jie.,Zhu, Dong.,Jiang, Yu-Gen.,Zheng, Bang-Xiao.,...&Zhu, Yong-Guan.(2021).How can fertilization regimes and durations shape earthworm gut microbiota in a long-term field experiment?.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,177,260-269. |
| MLA | Bi, Qing-Fang,et al."How can fertilization regimes and durations shape earthworm gut microbiota in a long-term field experiment?".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 177(2021):260-269. |
入库方式： OAI收割
来源：生态环境研究中心
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