title: [Effects of high temperature and humidity on leaf Bt protein expression of transgenic Bt cotton].
abstract: Different origins Bt cotton cultivars, including DP410B (conventional cultivar) and Daiza No. 1 (hybridized cultivar) from US and Sikang No. 1 (conventional cultivar) and Sikang No. 3 (hybridized cultivar) from China, were taken as the test materials to investigate the effects of high temperature (37 degrees C) and different humidity (50%, 70%, and 90%) on the leaf Bt protein expression of Bt cotton. At high temperature, temperature and humidity had no significant effects on the leaf Bt protein expression of the cultivars at peak squaring stage. At peak flowering stage, as compared with the control (25-30 degrees C and 60%-70% humidity), 37 degrees C and 50% humidity decreased the leaf Bt protein content of conventional cultivars significantly by 2.6%-3.0%. At peak bolling stage, compared with the control, 37 degrees C and 50% humidity decreased the leaf Bt protein content of DP410B, Sikang No. 1, and Sikang No. 3 significantly by 3.3%-5.8%. Among the four cultivars, DP410B and Daiza No. 1 had the highest leaf Bt protein content, while Sikang No. 1 had the lowest one.
authors: Jiangsu Province Key Laboratory of Crop Gentics and Physiology/Ministry of Agriculture Key Laboratory of Crop Physiology, Ecology and Cultivation in Middle and Lower Reaches of Yangtze River, Yangzhou University, Yangzhou 225009, Jiangsu, China. yzzhangxiang@163.com
authors: Xiang
authors: X
authors: Zhang
authors: Gui-Xia
authors: GX
authors: Wang
authors: Chao
authors: C
authors: Gu
authors: Yong
authors: Y
authors: Han
authors: Ying-Fei
authors: YF
authors: Xu
authors: Yuan
authors: Y
authors: Chen
authors: De-Hua
authors: DH
authors: Chen
mesh_terms: D000818:Animals; D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins / Q000378:metabolism*; D004731:Endotoxins / Q000378:metabolism*; D003368:Gossypium / Q000235:genetics / Q000378:metabolism*; D006460:Hemolysin Proteins / Q000378:metabolism*; D006358:Hot Temperature; D006813:Humidity; D010572:Pest Control, Biological / Q000379:methods*; D018515:Plant Leaves / Q000378:metabolism*; D030821:Plants, Genetically Modified
chemical_list: D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins; D004731:Endotoxins; D006460:Hemolysin Proteins; C030956:insecticidal crystal protein, Bacillus Thuringiensis