Earthworms (Eisenia foetida, Savigny) mucus as complexing ligand for imidacloprid
文献类型：期刊论文
| 作者 | Pan ; Xiangliang ; Song ; Wenjuan ; Zhang ; Daoyong |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2010 |
| 卷号 | 46期号:8页码:845-850 |
| 关键词 | BOVINE SERUM-ALBUMIN FLUORESCENCE QUENCHING METHOD DISSOLVED ORGANIC-MATTER SPECTROSCOPIC METHODS AMINO-ACIDS SOIL BINDING BIOAVAILABILITY FRACTIONATION COMPLEXATION |
| ISSN号 | 0178-2762 |
| 通讯作者 | Zhang, DY, Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China |
| 中文摘要 | Earthworms can excrete copious amounts of mucus that may affect the fraction, transport fate, and bioavailability of contaminants in soil. However, interaction of mucus with organic contaminants is still not well-known. In the present study, complexation properties of surface mucus (from the earthworm species Eisenia foetida, Savigny) with imidacloprid were investigated using fluorescence excitation emission matrix (EEM) spectroscopy. It was found that carbohydrates and proteins are major components in mucus of this species. Two fluorescent peaks belonging to protein-like substances were identified in the EEM spectrum of mucus. The protein-like fluorescence was clearly quenched by imidacloprid, indicating that the protein-like substances reacted strongly with imidacloprid. The fluorescence quenching processes was governed by a static process. The values of effective quenching constant (logK (a)) for these two peaks were 11.46 and 7.96, respectively, indicating that there is a strong interaction between mucus and imidacloprid and mucus-imidacloprid complexes are formed. Higher binding constants (logK (b) = 25.6 and 14.0) than those for heavy metals binding to dissolved organic matter or organic pollutants binding to proteins confirm the strong complexation between mucus and imidacloprid. Our study implies that earthworm surface mucus may significantly affect the fraction, toxicity, and bioavailability of organic contaminants in the soil due to its high affinity for organic contaminants. |
| 学科主题 | 动物学 ; 生物化学与分子生物学 |
| 收录类别 | SCI |
| 公开日期 | 2011-08-19 |
| 源URL | [http://ir.xjlas.org/handle/365004/9894]  |
| 专题 | 新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据) |
| 推荐引用方式 GB/T 7714 | Pan,Xiangliang,Song,et al. Earthworms (Eisenia foetida, Savigny) mucus as complexing ligand for imidacloprid[J]. BIOLOGY AND FERTILITY OF SOILS,2010,46(8):845-850. |
| APA | Pan,Xiangliang,Song,Wenjuan,Zhang,&Daoyong.(2010).Earthworms (Eisenia foetida, Savigny) mucus as complexing ligand for imidacloprid.BIOLOGY AND FERTILITY OF SOILS,46(8),845-850. |
| MLA | Pan,et al."Earthworms (Eisenia foetida, Savigny) mucus as complexing ligand for imidacloprid".BIOLOGY AND FERTILITY OF SOILS 46.8(2010):845-850. |
入库方式： OAI收割
来源：新疆生态与地理研究所
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