Evaluation the control effects of the transgenic Bacillus thuringiensis corn expressing Cry1Ab protein on the larvae of Mythimna separata Effects of leaf residue decomposition of cry1Ac-transgenic insect-resistant maize on community structure of soil animals Change of photosynthesis and growth of Bt corn Change in concentration of secondary metabolites- DIMBOA and phenolic acids in leaves of Bt corn Effects of planting Bt corn on soil microbial activity and soil fertility Change in abuscular mycorrhizal fungi colonization rate and nutrient content in Bt corn Effects of Bt corn straw decomposition on soil enzyme activities and soil fertility GM Crop Breeding : Current Status and Prospects Systemic induced effects of mechanical wounding on the chemical defense of Bt corn (Zea mays)