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Zhu L, Lin Y, Yang W, Pan Z, Chen W, Yao J, Sheng O, Zhou L, Jiang D. The Identification of the Banana Endogenous Reference Gene MaSPS1 and the Construction of Qualitative and Quantitative PCR Detection Methods. Genes (Basel) 2023; 14:2116. [PMID: 38136937 PMCID: PMC10742897 DOI: 10.3390/genes14122116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/18/2023] [Accepted: 11/22/2023] [Indexed: 12/24/2023] Open
Abstract
Endogenous reference genes play a crucial role in the qualitative and quantitative PCR detection of genetically modified crops. Currently, there are no systematic studies on the banana endogenous reference gene. In this study, the MaSPS1 gene was identified as a candidate gene through bioinformatics analysis. The conservation of this gene in different genotypes of banana was tested using PCR, and its specificity in various crops and fruits was also examined. Southern blot analysis showed that there is only one copy of MaSPS1 in banana. The limit of detection (LOD) test showed that the LOD of the conventional PCR method is approximately 20 copies. The real-time fluorescence quantitative PCR (qPCR) method also exhibited high specificity, with a LOD of approximately 10 copies. The standard curve of the qPCR method met the quantitative requirements, with a limit of quantification (LOQ) of 1.14 × 10-2 ng-about 20 copies. Also, the qPCR method demonstrated good repeatability and stability. Hence, the above results indicate that the detection method established in this study has strong specificity, a low detection limit, and good stability. It provides a reliable qualitative and quantitative detection system for banana.
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Affiliation(s)
- Lili Zhu
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (L.Z.); (Y.L.); (W.Y.); (Z.P.); (W.C.); (J.Y.)
| | - Ying Lin
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (L.Z.); (Y.L.); (W.Y.); (Z.P.); (W.C.); (J.Y.)
- College of Agriculture & Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Wenli Yang
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (L.Z.); (Y.L.); (W.Y.); (Z.P.); (W.C.); (J.Y.)
| | - Zhiwen Pan
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (L.Z.); (Y.L.); (W.Y.); (Z.P.); (W.C.); (J.Y.)
| | - Weiting Chen
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (L.Z.); (Y.L.); (W.Y.); (Z.P.); (W.C.); (J.Y.)
| | - Juan Yao
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (L.Z.); (Y.L.); (W.Y.); (Z.P.); (W.C.); (J.Y.)
| | - Ou Sheng
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
| | - Lingyan Zhou
- College of Agriculture & Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Dagang Jiang
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (L.Z.); (Y.L.); (W.Y.); (Z.P.); (W.C.); (J.Y.)
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2
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Marien A, Sedefoglu H, Dubois B, Maljean J, Francis F, Berben G, Guillet S, Morin JF, Fumière O, Debode F. Detection of Alphitobius diaperinus by Real-Time Polymerase Chain Reaction With a Single-Copy Gene Target. Front Vet Sci 2022; 9:718806. [PMID: 35356786 PMCID: PMC8959938 DOI: 10.3389/fvets.2022.718806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 01/10/2022] [Indexed: 01/06/2023] Open
Abstract
Use of edible insects as an alternative source of proteins in food and feed is increasing. These last years, numerous companies in Europe have started producing insects for food and feed purposes. In the European Union, the use of edible insects for human consumption falls within Regulation (EU) No. 2015/2283 on novel foods. For feed, Commission Regulation (EU) 2017/893 authorizes seven insect species as processed animal proteins for aquaculture. Methods of authentication are required to check the conformity of the products. In this study, we propose a real-time polymerase chain reaction (PCR) method for the specific detection of the lesser mealworm (Alphitobius diaperinus), one of the species included in the shortlist of authorized insects. The selected target is the cadherin gene with a single-copy (per haploid genome) illustrated by our experimental evidence. The PCR test amplified a 134-bp fragment of the cadherin gene. The qualitative method was assessed toward several performance criteria. Specificity was checked against 54 insect species next to other animal and plant species. The sensitivity, efficiency, robustness, and transferability of the PCR assay were also successfully tested. Finally, the applicability of the test was assessed on real-life processed samples (industrial meals) of A. diaperinus. The study also showed that there seems to be a huge confusion on the correct labeling of the marketed mealworms. We did not succeed to get Alphitobius laevigatus samples. They all appeared to belong to the A. diaperinus taxon.
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Affiliation(s)
- Aline Marien
- Quality and Authentication of Agricultural Products Unit, Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre, Gembloux, Belgium
- *Correspondence: Aline Marien
| | - Hamza Sedefoglu
- Haute Ecole Louvain-en-Hainaut, Montignies-sur-Sambre, Belgium
| | - Benjamin Dubois
- Quality and Authentication of Agricultural Products Unit, Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre, Gembloux, Belgium
| | - Julien Maljean
- Quality and Authentication of Agricultural Products Unit, Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre, Gembloux, Belgium
| | - Frédéric Francis
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, ULiège, Gembloux, Belgium
| | - Gilbert Berben
- Quality and Authentication of Agricultural Products Unit, Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre, Gembloux, Belgium
| | | | | | - Olivier Fumière
- Quality and Authentication of Agricultural Products Unit, Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre, Gembloux, Belgium
| | - Frédéric Debode
- Biological Engineering Unit, Life Sciences Department, Walloon Agricultural Research Centre, Gembloux, Belgium
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3
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Xu J, Wan C, Luan S, Li X, Xu Y, Zhao YU, Cao J. Applicability of plasmid calibrant pMON87712 for quantitative detection of the transgenic soybean MON87712. Acta Biochim Biophys Sin (Shanghai) 2021; 53:933-942. [PMID: 34223883 DOI: 10.1093/abbs/gmab063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Indexed: 11/13/2022] Open
Abstract
The transgenic glyphosate-tolerant soybean MON87712 event was developed by the agrochemical and agricultural biotechnology company Monsanto (USA) and commercialized in 2013. Due to the absence of matrix-based and genomic DNA-positive reference material for MON87712, it is very difficult to detect and monitor this event. In this study, we developed a recombinant 760-bp linearized plasmid, including 150 bp of the soybean endogenous lectin gene and 610 bp of the exogenous BBX32 gene plus its 3' flanking sequence of MON87712 by In-Fusion cloning technology. In addition, a duplex real-time polymerase chain reaction for the detection of MON87712 and the soybean endogenous lectin gene was established. By using this method, we achieved specific and quantitative detection of MON87712 in 45 other kinds of crops, with a detection limit of 10 copies/μl. This method provides a new technical means for the accurate detection of transgenic soybean MON87712, as well as technical support for the supervision of agricultural transgenic organisms.
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Affiliation(s)
- Junyi Xu
- Food Biology Laboratory, Technology Center of Dalian Customs District, Dalian 116001, China
| | - Chao Wan
- Food Biology Laboratory, Technology Center of Dalian Customs District, Dalian 116001, China
| | - Shenshun Luan
- Food Biology Laboratory, Technology Center of Dalian Customs District, Dalian 116001, China
| | - Xin Li
- Food Biology Laboratory, Technology Center of Dalian Customs District, Dalian 116001, China
| | - Yang Xu
- Food Biology Laboratory, Technology Center of Dalian Customs District, Dalian 116001, China
| | - Y U Zhao
- Food Biology Laboratory, Technology Center of Dalian Customs District, Dalian 116001, China
| | - Jijuan Cao
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, College of Life Science, Dalian Minzu University, Dalian 116600, China
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Du Y, Chen F, Bu G, Zhang L. Distribution and degradation of DNA from non-genetically and genetically modified soybean (Roundup Ready): Impact of soybean protein concentrate and soybean protein isolate preparation. Food Chem 2021; 335:127582. [PMID: 32739806 DOI: 10.1016/j.foodchem.2020.127582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 07/08/2020] [Accepted: 07/12/2020] [Indexed: 01/04/2023]
Abstract
To improve genetically modified product labelling legislation and promote the development of genetically modified foods, the mass variations of genomic DNA and length distributions of DNA fragments in non-genetically and genetically modified soybean (Roundup Ready) and the variations in transgenic contents during soybean protein concentrate (SPC) and soybean protein isolate (SPI) preparation were monitored. The material masses throughout the process conformed to the law of mass conservation, and amounts of DNA recovered decreased with SPC and SPI preparation. The successive steps of ethanol extraction led to a decrease in the size distribution of the recovered DNA. For the LECTIN and CP4 EPSPS targets investigated, longer fragments (>800 bp) were more affected than smaller fragments (<200 bp), and both targets degraded slowly upon degradation into small fragments. DNA distribution and degradation thereby affected GMO quantification. After preparation procedures, the transgenic contents of SPC and SPI products were higher than that of raw soybean.
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Affiliation(s)
- Yan Du
- College of Food Science and Technology, Henan University of Technology, Zhengzhou, 450001 Henan, China.
| | - Fusheng Chen
- College of Food Science and Technology, Henan University of Technology, Zhengzhou, 450001 Henan, China.
| | - Guanhao Bu
- College of Food Science and Technology, Henan University of Technology, Zhengzhou, 450001 Henan, China
| | - Lifen Zhang
- College of Food Science and Technology, Henan University of Technology, Zhengzhou, 450001 Henan, China
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5
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Wang X, Tang T, Miao Q, Xie S, Chen X, Tang J, Peng C, Xu X, Wei W, You Z, Xu J. Detection of transgenic rice line TT51-1 in processed foods using conventional PCR, real-time PCR, and droplet digital PCR. Food Control 2019. [DOI: 10.1016/j.foodcont.2018.11.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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6
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Development of Real-time PCR Assays for the Detection of the pin II Terminator (tpinII) Used in GM Constructs and Its Donor Organism, Potato (Solanum tuberosum). FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1203-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Li Z, Li X, Wang C, Song G, Pi L, Zheng L, Zhang D, Yang L. One Novel Multiple-Target Plasmid Reference Molecule Targeting Eight Genetically Modified Canola Events for Genetically Modified Canola Detection. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:8489-8500. [PMID: 28844131 DOI: 10.1021/acs.jafc.7b02453] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Multiple-target plasmid DNA reference materials have been generated and utilized as good substitutes of matrix-based reference materials in the analysis of genetically modified organisms (GMOs). Herein, we report the construction of one multiple-target plasmid reference molecule, pCAN, which harbors eight GM canola event-specific sequences (RF1, RF2, MS1, MS8, Topas 19/2, Oxy235, RT73, and T45) and a partial sequence of the canola endogenous reference gene PEP. The applicability of this plasmid reference material in qualitative and quantitative PCR assays of the eight GM canola events was evaluated, including the analysis of specificity, limit of detection (LOD), limit of quantification (LOQ), and performance of pCAN in the analysis of various canola samples, etc. The LODs are 15 copies for RF2, MS1, and RT73 assays using pCAN as the calibrator and 10 genome copies for the other events. The LOQ in each event-specific real-time PCR assay is 20 copies. In quantitative real-time PCR analysis, the PCR efficiencies of all event-specific and PEP assays are between 91% and 97%, and the squared regression coefficients (R2) are all higher than 0.99. The quantification bias values varied from 0.47% to 20.68% with relative standard deviation (RSD) from 1.06% to 24.61% in the quantification of simulated samples. Furthermore, 10 practical canola samples sampled from imported shipments in the port of Shanghai, China, were analyzed employing pCAN as the calibrator, and the results were comparable with those assays using commercial certified materials as the calibrator. Concluding from these results, we believe that this newly developed pCAN plasmid is one good candidate for being a plasmid DNA reference material in the detection and quantification of the eight GM canola events in routine analysis.
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Affiliation(s)
- Zhuqing Li
- National Center for the Molecular Characterization of Genetically Modified Organisms, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University , Shanghai 200240, China
| | - Xiang Li
- Shanghai Entry-Exit Inspection and Quarantine Bureau, GMO Detection Laboratory , 1208 Minheng Road, Shanghai 200135, P. R. China
| | - Canhua Wang
- National Center for the Molecular Characterization of Genetically Modified Organisms, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University , Shanghai 200240, China
| | - Guiwen Song
- Development Center of Science and Technology, Ministry of Agriculture of People's Republic of China , Beijing 100025, China
| | - Liqun Pi
- National Center for the Molecular Characterization of Genetically Modified Organisms, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University , Shanghai 200240, China
| | - Lan Zheng
- National Center for the Molecular Characterization of Genetically Modified Organisms, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University , Shanghai 200240, China
| | - Dabing Zhang
- National Center for the Molecular Characterization of Genetically Modified Organisms, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University , Shanghai 200240, China
- Key Laboratory of Crop Marker-Assisted Breeding of Huaian Municipality, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection , Huaian 223300, China
| | - Litao Yang
- National Center for the Molecular Characterization of Genetically Modified Organisms, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University , Shanghai 200240, China
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8
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Caldwell JM. Food Analysis Using Organelle DNA and the Effects of Processing on Assays. Annu Rev Food Sci Technol 2017; 8:57-74. [DOI: 10.1146/annurev-food-030216-030216] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Kim JH, Park SB, Roh HJ, Shin MK, Moon GI, Hong JH, Kim HY. Event-specific qualitative and quantitative detection of five genetically modified rice events using a single standard reference molecule. Food Chem 2017; 226:187-192. [PMID: 28254011 DOI: 10.1016/j.foodchem.2017.01.065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 01/03/2017] [Accepted: 01/13/2017] [Indexed: 11/17/2022]
Abstract
One novel standard reference plasmid, namely pUC-RICE5, was constructed as a positive control and calibrator for event-specific qualitative and quantitative detection of genetically modified (GM) rice (Bt63, Kemingdao1, Kefeng6, Kefeng8, and LLRice62). pUC-RICE5 contained fragments of a rice-specific endogenous reference gene (sucrose phosphate synthase) as well as the five GM rice events. An existing qualitative PCR assay approach was modified using pUC-RICE5 to create a quantitative method with limits of detection correlating to approximately 1-10 copies of rice haploid genomes. In this quantitative PCR assay, the square regression coefficients ranged from 0.993 to 1.000. The standard deviation and relative standard deviation values for repeatability ranged from 0.02 to 0.22 and 0.10% to 0.67%, respectively. The Ministry of Food and Drug Safety (Korea) validated the method and the results suggest it could be used routinely to identify five GM rice events.
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Affiliation(s)
- Jae-Hwan Kim
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Saet-Byul Park
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Hyo-Jeong Roh
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Min-Ki Shin
- Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation, Cheongju 28159, Republic of Korea
| | - Gui-Im Moon
- Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation, Cheongju 28159, Republic of Korea
| | - Jin-Hwan Hong
- Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation, Cheongju 28159, Republic of Korea
| | - Hae-Yeong Kim
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea.
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10
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Kim JH, Park SB, Roh HJ, Park S, Shin MK, Moon GI, Hong JH, Kim HY. A simplified and accurate detection of the genetically modified wheat MON71800 with one calibrator plasmid. Food Chem 2015; 176:1-6. [DOI: 10.1016/j.foodchem.2014.12.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 12/13/2014] [Accepted: 12/13/2014] [Indexed: 10/24/2022]
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11
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Al-Salameen F, Kumar V, Al-Aqeel H, Al-Hashash H, Hejji AB. Detection of genetically modified DNA in fresh and processed foods sold in Kuwait. GM CROPS & FOOD 2014; 3:283-8. [DOI: 10.4161/gmcr.21364] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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Batista RITP, Luciano MCS, Teixeira DIA, Freitas VJF, Melo LM, Andreeva LE, Serova IA, Serov OL. Methodological strategies for transgene copy number quantification in goats (Capra hircus) using real-time PCR. Biotechnol Prog 2014; 30:1390-400. [PMID: 25044808 DOI: 10.1002/btpr.1946] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Revised: 06/26/2014] [Indexed: 12/24/2022]
Abstract
Taking into account the importance of goats as transgenic models, as well as the rarity of copy number (CN) studies in farm animals, the present work aimed to evaluate methodological strategies for accurate and precise transgene CN quantification in goats using quantitative polymerase chain reaction (qPCR). Mouse and goat lines transgenic for human granulocyte-colony stimulating factor were used. After selecting the best genomic DNA extraction method to be applied in mouse and goat samples, intra-assay variations, accuracy and precision of CN quantifications were assessed. The optimized conditions were submitted to mathematical strategies and used to quantify CN in goat lines. The findings were as follows: validation of qPCR conditions is required, and amplification efficiency is the most important. Absolute and relative quantifications are able to produce similar results. For normalized absolute quantification, the same plasmid fragment used to generate goat lines must be mixed with wild-type goat genomic DNA, allowing the choice of an endogenous reference gene for data normalization. For relative quantifications, a resin-based genomic DNA extraction method is strongly recommended when using mouse tail tips as calibrators to avoid tissue-specific inhibitors. Efficient qPCR amplifications (≥95%) allow reliable CN measurements with SYBR technology. TaqMan must be used with caution in goats if the nucleotide sequence of the endogenous reference gene is not yet well understood. Adhering to these general guidelines can result in more exact CN determination in goats. Even when working under nonoptimal circumstances, if assays are performed that respect the minimum qPCR requirements, good estimations of transgene CN can be achieved.
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Affiliation(s)
- Ribrio I T P Batista
- Laboratory of Physiology and Control of Reproduction, Faculty of Veterinary, State University of Ceará, Fortaleza, Brazil
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13
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Wang X, Chen X, Xu J, Wang P, Shen W. Multiplex event-specific qualitative polymerase chain reaction for detecting three transgenic rice lines and application of a standard plasmid as a quantitative reference molecule. Anal Biochem 2014; 464:1-8. [PMID: 25026190 DOI: 10.1016/j.ab.2014.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 07/05/2014] [Accepted: 07/07/2014] [Indexed: 11/18/2022]
Abstract
The three most well-known genetically modified (GM) rice lines in China are TT51-1, KMD1, and KF6. The purposes of this study were to establish a multiplex event-specific qualitative polymerase chain reaction (meqPCR) system for simultaneous detection of the three transgenic rice events and to construct a plasmid as the reference molecule for quantitative analysis. Event-specific primers for each event were selected or designed by focusing on the transgene borders between the inserted DNA and the flanking rice DNA. The developed meqPCR was anticipated to detect distinct amplicons as 454, 398, 301, and 250bp from KF6, KMD1, TT51-1, and the rice endogenous reference gene, respectively. The robustness of the meqPCR was tested with different levels of the three transgenic rice genomic DNAs, and the sensitivity threshold of the meqPCR was at least 50ng of 0.1% rice DNA for each event when the three transgenic rice events present and with other GM materials together. The constructed plasmid was evaluated using mixed samples with known GM contents in real-time quantitative PCR. The results indicated that the constructed plasmid was acceptable and suitable for GM rice quantitative analysis.
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Affiliation(s)
- Xiaofu Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; Institute of Quality and Standard for Agricultural Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Xiaoyun Chen
- Institute of Quality and Standard for Agricultural Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Junfeng Xu
- Institute of Quality and Standard for Agricultural Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Pengfei Wang
- College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China
| | - Wenbiao Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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14
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Wang X, Tang Q, Dong L, Dong Y, Su Y, Jia S, Wang Z. Construction of a standard reference plasmid containing seven target genes for the detection of transgenic cotton. Plasmid 2014; 74:39-44. [DOI: 10.1016/j.plasmid.2014.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 05/31/2014] [Indexed: 11/26/2022]
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15
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A calibrator plasmid for quantitative analysis of insect resistant maize (Yieldgard MON 810). Food Chem 2013; 140:382-9. [DOI: 10.1016/j.foodchem.2013.02.067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 01/02/2013] [Accepted: 02/18/2013] [Indexed: 11/19/2022]
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16
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Evaluation of plasmid and genomic DNA calibrants used for the quantification of genetically modified organisms. Anal Bioanal Chem 2012; 404:29-42. [DOI: 10.1007/s00216-012-6104-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 05/02/2012] [Accepted: 05/04/2012] [Indexed: 10/28/2022]
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17
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Guan Q, Wang X, Teng D, Yang Y, Tian F, Yin Q, Wang J. Construction of a Standard Reference Plasmid for Detecting GM Cottonseed Meal. Appl Biochem Biotechnol 2011; 165:24-34. [DOI: 10.1007/s12010-011-9230-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Accepted: 03/18/2011] [Indexed: 11/24/2022]
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