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2017

study is to investigate the molecular mechanisms of tetracycline resistance and biotransformation

by Stenotrophomonas maltophilia strain DT1 under various background nutrient conditions.
Strain DT1 was exposed to tetracycline for 7 days with four background nutrient conditions:

no background (NB), peptone (P), peptone plus citrate (PC), and peptone plus glucose
(PG). The biotransformation rate follows the order of PC > P > PG > NB approximate to

0. Genomic analysis showed that strain DT1 contained tet(X1), a gene encoding an FAD-
binding monooxygenase, and eight peroxidase genes that could be relevant to tetracycline

biotransformation. Quantitative proteomic analyses revealed that nodulation protein transported
tetracycline outside of cells; hypoxanthine-guanine phosphoribosyltransferase facilitate

theactivation of the ribosomal protection proteins to prevent the binding of tetracycline
to the ribosome and superoxide dismutase and peroxiredoxin-modified tetracycline molecules.

Comparing different nutrient conditions showed that thebiotransformation rates of tetracycline
were positively correlated with the expression levels of superoxide dismutase.

论文链接： https://doi.org/10.1021/acs.est.7b02579

16.Compartmentalization of extracellular polymeric substances (EPS) solubilization
and cake microstructure in relation to wastewater sludge electro-dewatering behavior

assisted by horizontal electric field: Effect of operating conditions
作 者 : Cao Bingdi; Zhang Weijun*; Du, Youjing; Wang, Ruilu ; Usher, Shane P;Scales
Peter J ;Wang Dongsheng*

WATER RESEARCH 卷 : 130 页 : 363-375 出版年 : MAR 1 2018

摘 要 ：Sludge treatment and disposal have become important environmental
issues in China. Mechanical dewatering is widely used to reduce the amount of sludge to be

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