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| 1 | Effects of redox potential on soil cadmium solubility:Insight into microbial community显示文摘Understanding the role of microbes in the solubility of cadmium(Cd) is of fundamental importance for remediation of Cd toxicity. The present study aimed to identify the microbes that involved in regulating Cd solubility and to reveal possible mechanisms. Therefore,microbial communities were investigated through high-throughput sequencing approach, the molecular ecological network was constructed and metagenomes were predicted. Our results indicated that redox conditions affected both the solubility of soil Cd and the microbial communities. Anaerobic microbes, such as Anaerolineaceae, did not only play important roles in shaping the microbial community in soils, but might also be involved in regulating the Cd solubility. Two possible mechanisms that how Anaerolineaceae involved in Cd solubility are(1) Anaerolineaceae are important organic matter degraders under anoxic conditions and(2) Anaerolineaceae can co-exist with methane metabolism microbes, while methane metabolism promotes the precipitation of soluble Cd. Thus, application of Anaerolineaceae in bioremediation of soil Cadmium contamination is a potential approach. The study provided a novel insight into the role of microbial community in the regulation of Cd solubility under different redox conditions, and suggested a potential approach for the remediation of soil Cd contamination. | Delong Meng Juan Li Tianbo Liu Yongjun Liu Mingli Yan Jin Hu Xiaoqi Li Xueduan Liu Yili Liang Hongwei Liu Huaqun Yin | 2019 | Journal of Environmental Sciences2019，31，1： | 6 |
| 2 | The diversity of denitrifying bacteria in the alpine meadow soil of Sanjiangyuan natural reserve in Tibet Plateau显示文摘This is the first time to describe the diversity of denitrifying bacteria in Sanjiangyuan natural reserve in Tibet Plateau by investigating the molecular diversity and phylogenetic analysis of nirK and nosZ genes using PCR-RFLP and sequencing. Four soil samples were collected from alpine meadow communities from over an altitude of 4600 m which had different physicochemical properties by principal component analysis (PCA). For the genes fragment of nirK and nosZ, the diverse PCR products were characterized by cloning, restriction fragment length polymorphism (RFLP) analysis and sequenced. A total of 253 nirK clones and 283 nosZ clones were received in four samples, and 78 operational taxonomic units (OTUs) of nirK and 120 OTUs of nosZ by the restriction enzymes MspI and RsaI digested. The analysis of environmental factors showed that altitude and C/N ratio in soil may be the key factors to the denitrifying bacteria community. 36 nirK clones and 17 nosZ clones were sequenced, and their levels of nucleotide identity were from 69% to 98% and 57% to 97%, respectively. The phylogenetic tree was constructed using the Clustal W and Mega softwares, and all the sequenced clones could be subdivided into 4 groups. Some of clone sequences were related to the nirK and nosZ genes belonging to three phylogenetic subdivisions (α-, β- and γ subclasses of the Proteobacteria), while most of the clones were closely related to the genes of the uncultured bacteria. The sequence distributions were not clear relating to the sample sites in the tree. | ZHANG Yuguang LI Diqiang WANG Huimin XIAO Qiming LIU Xueduan | 2006 | Chinese Science Bulletin2006，51，10： | 4 |
| 3 | Inhibition of hematite on acid mine drainage caused by chalcopyrite biodissolution显示文摘Even though biodissolution of chalcopyrite is considered to be one of the key contributors in the formation of acid mine drainage(AMD),there are few studies to control AMD by inhibiting chalcopyrite biodissolution.Therefore,a novel method of using hematite to inhibit chalcopyrite biodissolution was proposed and verified.The results indicated that chalcopyrite biodissolution could be significantly inhibited by hematite,which consequently decreased the formation of AMD.In the presence of hematite,the final biodissolution rate of chalcopyrite decreased from 57.9%to 44.4%at 20 day.This in turn suggested that the formation of AMD was effectively suppressed under such condition.According to the biodissolution results,mineral composition and morphology analyses,and electrochemical analysis,it was shown that hematite promoted the formation and accumulation of passivation substances(jarosite and Cu2-xS)on chalcopyrite surface,thus inhibiting the biodissolution of chalcopyrite and limiting the formation of AMD. | Baojun Yang Wen Luo Maoxin Hong Jun Wang Xueduan Liu Min Gan Guanzhou Qiu | 2022 | Chinese Journal of Chemical Engineering2022，35，4： | 2 |
| 4 | Modified pretreatment method for total microbial DNA extraction from contaminated river sediment显示文摘从污染环境样品的高质量的微生物引起的 DNA 的抽取是在微生物引起的生态的学习的必要的步。为土壤和沉积样品基于以前出版的方法,一个修改预告的处理方法为经由最佳的预告的处理参数的选择从重重地污染的河沉积样品提取微生物引起的 DNA 被开发(即,试剂答案,反应持续时间,和温度) 。预告的处理过程涉及与包含有效技术的 0.1 摩尔在废水消除危险、有毒、高度集中的有机化合物的一个答案在三次洗河沉积样品。在纸,多围的碳 nanotubes ( MWCNT ),由 O 的 functionalized <潜水艇class=“ a-plus-plus ”> 3 ,当任何金属不在时被用作催化剂在酚的催化湿空气氧化( CWAO )调查催化活动,硝基苯( NB )和在温和操作的苯胺调节( 155 | Yun FANG Meiying XU Xingjuan CHEN Guoping SUN Jun GUO Weimin WU Xueduan LIU | 2015 | Frontiers of Environmental Science & Engineering2015，9，3： | 2 |
| 5 | Response of Acidithiobacillus ferrooxidans ATCC 23270 gene expression to acid stress显示文摘 | Jing Chao Wei Wang Shuiming Xiao Xueduan Liu | 2008 | World Journal of Microbiology and Biotechnology2008，，10： | 1 |
| 6 | The bioleaching feasibility for Pb/Zn smelting slag and community characteristics of indigenous moderate-thermophilic bacteria显示文摘 | Yi Cheng Zhaohui Guo Xueduan Liu Huaqun Yin Guanzhou Qiu Fengkai Pan Hongwei Liu | 2008 | Bioresource Technology2008，，10： | 1 |
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