نتایج جستجو برای: genetically modified bacillus thuringiensis rice bt gm rice

تعداد نتایج: 446496  

2012
Xiaoyun Chen Xiaofu Wang Nuo Jin Yu Zhou Sainan Huang Qingmei Miao Qing Zhu Junfeng Xu

Genetically modified (GM) rice KMD1, TT51-1, and KF6 are three of the most well known transgenic Bt rice lines in China. A rapid and sensitive molecular assay for risk assessment of GM rice is needed. Polymerase chain reaction (PCR), currently the most common method for detecting genetically modified organisms, requires temperature cycling and relatively complex procedures. Here we developed a ...

2012
M. Wei F. Tan H. Zhu K. Cheng X. Wu J. Wang K. Zhao X. Tang

In contrast to other transgenic Bacillus thuringiensis (Bt) crops (e.g. Bt maize and cotton), risk assessments of Bt rice on soil ecosystem are few. To assess the influence of Bt rice on rhizosphere soil ecosystems, soil samples from Bt, non-Bt and controls were taken at seedling, tillering, booting, heading and maturing stages. The activities of dehydrogenases, invertase, phenol oxidases, acid...

2017
Fang Wang Cong Dang Xuefei Chang Junce Tian Zengbin Lu Yang Chen Gongyin Ye

The current difficulty facing risk evaluations of Bacillus thuringiensis (Bt) crops on nontarget arthropods (NTAs) is the lack of criteria for determining what represents unacceptable risk. In this study, we investigated the biological parameters in the laboratory and field population abundance of Nilaparvata lugens (Hemiptera: Delphacidae) on two Bt rice lines and the non-Bt parent, together w...

2004
Jikun Huang Ruifa Hu Carl Pray Scott Rozelle

This article provides an overview of China’ plant biotechnology development and its impacts on farmers. Our study shows that while Chinese policymakers have considered agricultural biotechnology as a strategically significant tool for improving national food security and raising agricultural productivity, they have been hesitant to approve the commercialisation of new genetically modified (GM) ...

Journal: :International journal of occupational and environmental health 2004
Ferdaus Hossain Carl E Pray Yanmei Lu Jikun Huang Cunhui Fan Ruifa Hu

This study provides the first evidence of a direct link between the adoption of a genetically modified (GM) crop and improvements in human health. Estimation of the impact of Bacillus thuringiensis (Bt) cotton adoption on pesticide use from data from a survey of cotton farmers in northern China, 1999-2001, showed that Bt cotton adoption reduced pesticide use. Assessment of a health-production f...

H. Fallahzadeh, M.S. Hosseini, S.S. Hosseini,

Background: Genetically Modified (GM) foods are produced using genetic engineering. This survey attempted to identify the presence of GM rice varieties among some imported rice samples in Iran. Methods: From May to July 2016, a total of 50 samples of the imported rice to Iran were obtained, including 20 bulk rice samples from Bandar Abbas custom, Southern Iran and 30 retail rice samples from s...

2014
Yan Yang Yue Liu Fengqin Cao Xiuping Chen Lisheng Cheng Jörg Romeis Yunhe Li Yufa Peng

By consuming mulberry leaves covered with pollen from nearby genetically engineered, insect-resistant rice lines producing Cry proteins derived from Bacillus thuringiensis (Bt), larvae of the domestic silkworm, Bombyx mori (Linnaeus) (Lepidoptera: Bombyxidae), could be exposed to insecticidal proteins. Laboratory experiments were conducted to assess the potential effects of Cry1C- or Cry2A-prod...

Journal: :Ecotoxicology 2009
Mao Chen Gong-yin Ye Zhi-cheng Liu Qi Fang Cui Hu Yu-fa Peng Anthony M Shelton

Lessons from organophosphorus pesticides, which could be bioaccumulated in non-target organisms at different trophic levels and caused unexpected negative impacts, necessitate a study of the possibility of biotransfer and bioaccumulation of Bacillus thuringiensis (Bt) insecticidal toxin(s) expressed in Bt plants. Using ELISA, we evaluated the transfer of Cry1Ab toxin in a food chain of Bt rice ...

Journal: :The New phytologist 2007
Jun Rong Bao-Rong Lu Zhiping Song Jun Su Allison A Snow Xinsheng Zhang Shuguang Sun Rui Chen Feng Wang

Genetically modified (GM) rice with enhanced agronomic traits and pharmaceutical uses are ready for widespread adoption. Little is known about isolation requirements for achieving stringent transgene confinement in rice. To investigate the extent of pollen-mediated crop-to-crop transgene flow, we conducted a field experiment with four plot-size treatments of adjacent GM and nonGM rice (Oryza sa...

2016
Ensi Shao Li Lin Chen Chen Hanze Chen Haohan Zhuang Songqing Wu Li Sha Xiong Guan Zhipeng Huang

Bacillus thuringiensis (Bt) Cry toxins have been used widely in pest managements. However, Cry toxins are not effective against sap-sucking insects (Hemiptera), which limits the application of Bt for pest management. In order to extend the insecticidal spectrum of Bt toxins to the rice brown planthopper (BPH), Nilaparvata lugens, we modified Cry1Ab putative receptor binding domains with selecte...

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