Construction of Recombinant E. coli JM109 Capable of Producing 3-Hydroxypropionic Acid and Its Fermentation Condition Optimization Enhanced Heavy Metal Tolerance and Accumulation of E.coli by Overexpressed AtGCS from Arabidopsis thaliana Expression of GMCHI gene,isolated from Soybean,Enhances the Survival in Prokaryotes to Low Temperature Stress Cloning and Prokaryotic Expression of MrLEA2 from Medicago ruthenica Preparation and application of antiserum against antigenic membrane protein of Paulownia witches′ broom phytoplasma The Construction of E.coli Engineering Strain for Sialyllactose Production The Protein Change During the Inactivation of Escherivhia coli by Supercritical CO2 Cloning L-lactate Dehydrogenase Gene from Pediococcus acidilactici and Overexpression of It in Recombination Strain E.coli JH12