Decomposition of Bacillus thuringiensis (Bt) transgenic rice residues (straw and roots) in paddy fields |
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| Authors: | Weixiang Wu Haohao Lu Wei Liu Medha Devare Janice E Thies Yingxu Chen |
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| Institution: | (1) College of Life Sciences, Zhejiang University, Hangzhou, 310029, China;(2) Institute of Environmental Science and Technology, Zhejiang University, Hangzhou, 310029, China;(3) Department of Crop and Soil Science, Cornell University, Ithaca, NY, USA |
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| Abstract: | Background, aim, and scope Genetic modification of commercial crops may affect their decomposition and nutrient cycling processes in agricultural ecosystems.
Intensive rice cultivation under partially submerged conditions (paddy rice) is an important and widespread cropping system,
particularly in the tropics, yet there is little data on the decomposition of Bt rice residue under field conditions. We investigated straw and root decomposition of rice modified to express the Cry1Ab
protein of Bacillus thuringiensis (Bt) to kill lepidopteran pests, compared with a parental non-Bt isoline. The objective of this study was to assess the possible impacts of cry gene transformation of rice on residue decomposition under intensive rice cultivation with long period of submergence. |
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