Team:LZU-China/interlab

       In our interlab work we test the three required parts. They are:

• 1. BBa_I20260 (J23101-B0032-E0040-B0015) Plate 4,Well 18A

• 2. BBa_J23101 + BBa_E0240 (B0032-E0040-B0015) Plate 1,Well 20K and Plate 2,Well 24B 

3.BBa_J23115 + BBa_E0240 (B0032-E0040-B0015) Plate 1,Well 22I and Plate 2,Well 24B

                                          Figure-1 The gel picture of each device

                                                                   Table-1 Each lane’s properties

Equipment and chemicals

   20μL eppendorf tubes x9

   ddH2O

   Competent E.Coli

   The devices

   Fluorescence microscope.

Methods:

   Each device was transformed in competent E.Coli and shaken cultured at 37℃ for 18h. Then we detected the number of green light spot by software. The final result is the average light spot , which are more bright than G value 192 for 3 random sites of each site by the algorithm which we used to developed.

       Microorganisms can degrade pollutants and produce electricity, so we aimed to produce microbial fuel cells (MFCs) to deal with the pollutant and generate electricity. This is really a new kind of technology for human because the world best MFCs can only run a tiny toy engine, so this should be have a bright future when it comes into practice.
At first, we construct a normal MFC, using Shewanella oneidensi to generate electricity and reduce sewage with heavy metal ions, during several experiments we found that MFCs running in traditional way have many disadvantages. These two we will mention as following are extremely serious.
       One is that pollutant, for example, p-Nitrophenol(PNP), exists in common sewage, always impede the electricity generation of MFC.

       Another drawback is that all kinds of traditional MFCs are hard to show the contaminants concentrations. In the past, some scientist and engineers had to use costly method for example High Performance Liquid Chromatography (HPLC) measure the substrate concentration. This is also a major drawback for MFCs applications.

      But how can we deal with these two kinds of problems? We noticed that if we could modify the gene of bacteria used in MFCs to fight against the negative effect of pollutant and invented a series of hardware and software to monitor the substrate concentration of MFCs, these two kinds of problems would be overcame successfully. So we registered iGEM 2014 to develop a novel MFCs system that can measure substrates concentrations using genetic engineered bacteria. This is a new concept not only simply for PNP problem, but also it is a standard model for all kinds of pollutant treatment and real-time substrate concentration monitoring.