Construction of Co-expressed MntH and Mn-catalase Gene in Escherichia coli and Optimization of Fermentation Conditions Progress in Inorganic Nitrogen Transport Proteins and Their Phosphorylation Regulatory Mechanism in Arabidopsis A putative 6-transmembrane nitrate transporter OsNRT1.1b plays a key role in rice under low nitrogen Molecular Cloning and Function Analyses of Two Ammonium Transporter Protein Genes from Pyrus calleryana Advances on screening of Cd-hyperaccumulators and transgenic improvement of plant in Cd-accumulation Molecular Cloning and Function Analyses of Two Ammonium Transporter Protein Genes from Pyrus calleryana Heavy metal-transport proteins in plants: A review. Screening and research on hypoglycemic effects of novel glycoside derivatives