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| 1 | Maize ZmFDR3 localized in chloroplasts is involved in iron transport显示文摘Iron is an essential nutrient for plant metabolism such that Fe-limited plants display chlorosis and suffer from reduced photosynthetic efficiency. Differential display previously identified genes whose expression was elevated in Fe-deficient maize roots. Here,we describe the functional characterization of one of the genes identified in the screen,ZmFDR3 (Zea maize Fe-deficiency-related). Heterologous functional complementation assays using a yeast iron uptake mutant showed that ZmFDR3 functions in iron transport. ZmFDR3 contains a domain found in FliN-proteins of the type III secretion system and is predicted to localize to the thylakoid of plastids. Fluorescence immunocytochemistry showed that ZmFDR3 is localized in the plastids of roots,stems and leaves,with high expression found in guard cell chloroplasts. Transgenic tobacco expressing a 35S-ZmFDR3 construct contains elevated iron content,displays well arranged thylakoid membranes and has photosynthetic indices that are higher than those of the wild type. Together,these results suggest that ZmFDR3 functions in chloroplast iron transport. | HAN JianHui1,SONG XiuFang1,LI Peng1,YANG HuiJun2 & YIN LiPing1 1 College of Life Science,Capital Normal University,Beijing 100048,China 2 Department of Biological Sciences,University of South Carolina,Columbia,SC 29208,USA | 2009 | Science China(Life Sciences)2009，52，9： | 7 |
| 2 | Serum uric acid and coronary heart disease显示文摘 | Joho T Beard Ⅱ Columbia SC | 1998 | Am Heart J1998，106，2： | 1 |
| 3 | FACTORS INFLUENCING THE LOADING OF SUPPORTED MATERIAL IN THE PREPARATION OF Fe/TiO_2 CATALYSTS显示文摘The impregnations of different kinds of titania support with aqueous solution or ferricions at various pH values and with the solution of these ions in a polar aprotic solvent,dimethylformamide(DMF),were invcstigated.The results suggest that the surface ofhydrated titania is amphoteric,and has the function of a cationic exchanger,its ion ex-change properties arc dependent on the pH of the impregnating solutions.The higher theconcentration of metal ions in the impregnating solution and the more polar thc solvent,thehigher the loading on the support material having thc higher degree of crystallinity and alarger surface area without any pretreatments such as dehydration and calcination. | Xie Kechang (Taiyuan University of Technology, Taiyuan, China)A. Nobile, Jr. and M.W. Davis, Jr. (University of South Carolina, Columbia, SC, USA) | 1989 | 分子催化1989，3，S1： | 0 |
| 4 | 双通道电去离子显示文摘本文将综述来自水处理系统设计和试运行经验教训,该水处理系统包括双通道反渗透系统处理,阻垢剂和硫酸钠的投加系统以及筒式过滤器作为该水处理系统的预处理系统;接着是膜脱气系统,精处理电去离子工艺:然后是双通道精处理电去离子系统用于联合循环发电厂的处理。本文将提供设备选择、装置运行、水质问题、系统重置、操作问题以及系统分析和验证协议的背景。由于给水水质自由基的变化和系统运行问题,本文特别关注的是反渗透系统(RoS)和电去离子(EDI)系统性能的分析。 | Steven Gagnon AVANTech, Inc Columbia, SC Troy Gill AVANTech Inc Columbia, SC | 2016 | 水处理信息报导2016，0，3： | 0 |
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