Ecological studies on genetically engineered microorganism in environment Advances in studies on genetically engineered microorganism ecology The Ecological Risks of Genetically Engineered Plants Research progress in chemical communication among insect-resistant genetically modified plants, insect pests and natural enemies. Analysis of Fitness Effect and Its Application in Assessing Environmental Risk Caused by Transgene Flow Advances in Research on Genetically Engineered Plants for Metal Resistance