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| 1 | Distinguishing transgenic from non-transgenic Arabidopsis plants by ~1H NMR-based metabolic fingerprinting显示文摘We have recently reported the construction of an nuclear magnetic resonance (NMR)-based metabonomics study platform, Automics. To examine the application of Automics in transgenic plants, we performed metabolic fingerprinting analysis, i.e., 1H NMR spectroscopy and multivariate analysis, on wild-type and transgenic Arabidopsis. We found that it was possible to distinguish wild-type from four transgenic plants by PLS-DA following application of orthogonal signal correction (OSC). Scores plot following OSC clearly demon-strates significant variation between the transgenic and non-transgenic groups, suggesting that the metabolic changes among wild-type and transgenic lines are possibly associated with transgenic event. We also found that the major contributing metabolites were some specific amino acids (i.e., threonine and alanine), which could correspond to the insertion of the selective marker BAR gene in the transgenic plants. Our data suggests that NMR-based metabonomics is an efficient method to distinguish fingerprinting difference between wild-type and transgenic plants, and can potentially be applied in the bio-safety assessment of transgenic plants. | Yanfei Ren Tao Wang Yufa Peng Bin Xia Li-Jia Qu | 2009 | Journal of Genetics and Genomics2009，36，10： | 7 |
| 2 | Expression of rabbit defensin NP-1 gene in transgenic tobacco plants and its activity against bacterial wilt显示文摘A cDNAderived 200 bp fragment encoding a rabbit defensin NP1 mature peptide was ligated into the GUSless pBI121 to yield pBIC35NP1. Tobacco leaf discs were genetically transformed with an Agrobacterium tumefaciens strain harbouring pBIC35NP1. Northern blot analysis showed that the defensin NP1 expression cassette was normally transcribed in transgenic plants. Resistance tests demonstrated that expression of native defensin NP1 can confer partial resistance to the bacterial wilt pathogen, Ralstonia solanacearum. | Rongzhao Fu Yufa Peng Guangcheng Cao Jiangsheng Ma Caixia Chen Liming Zhang Wenbin Li Yongru Sun | 1998 | Chinese Science Bulletin1998，43，18： | 3 |
| 3 | A comparative proteomics approach to detect unintended effects in transgenic Arabidopsis显示文摘Recently, as part of biosafety assessments, unintended effects have been given much attention. In this study, we applied a proteomics approach to elucidate the unintended effects of random T-DNA insertion in transgenic plants. Separated proteins extracted from 12 transgenic Arabidopsis thaliana with different T-DNA insertion sites and from wild-type (ecotype Col-o) were analyzed. In the transgenic plants, 102 significantly altered protein spots were detected, in which 59 were up-regulated and 43 down-regulated. MALDI-TOF MS analysis showed that most of these expression level-altered proteins were involved in energy transfer, oxidative respiration and photosynthesis. However, none of these proteins was a toxic protein or allergen. Using plants with or without cold treatment, a natural environmental stress, as controls, we found that the number of the altered proteins was even less in those transgenic plants than those triggered by the cold treatment, suggesting that the transgenic events had a weaker impact on the plants than the environmental stresses. Interestingly, the phosphinothricin acetyl transferase (PAT), the BAR-encoded protein, was detected in nine out of twelve different T-DNA insertion lines at five different insertion sites. These data suggest that the most significant impact of transgenic events on the host plants is from the transgene itself, i.e., from the predictable intended effects, rather than unintended effects. This study also suggests that the proteomics approach has the potential to detect the unintended effects in transgenic plants. | Yanfei Ren Jun Lv Hua Wang Linchuan Li Yufa Peng Li-Jia Qu | 2009 | Journal of Genetics and Genomics2009，36，10： | 2 |
| 4 | Screen of Bacillus thuringiensis toxins for transgenic rice to control Sesamia inferens and Chilo suppressalis显示文摘 | Yulin Gao Yang Hu Qiang Fu Jie Zhang Brenda Oppert Fengxiang Lai Yufa Peng Zhitao Zhang | 2010 | Journal of Invertebrate Pathology2010，，1： | 1 |
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