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Registros recuperados: 5
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Multiple pulses improve electroporation efficiency in Agrobacterium tumefaciens Electron. J. Biotechnol.
Mahmood,Tariq; Zar,Tamkina; Saqlan Naqvi,S.M.
Electroporation entails brief, high intensity pulse to create transient pores in the cell membrane to facilitate the entry of exogenous macromolecules, which may otherwise be excluded. Removal of the external field leads to the resealing of the membrane electropores permitting the survival of the electrically stimulated recipient cells. Using this technique foreign deoxyribonucleic acid (DNA) has been successfully introduced into many cell types both from prokaryotes and eukaryotes. Increase in pulse voltage and length beyond a critical limit has been reported to decrease transformation efficiency, hence in this study we have investigated another strategy i.e. increase in the number of pulses at constant high voltage and pulse duration. Commonly used...
Tipo: Journal article Palavras-chave: Agrobacterium; Electroporation; Pulse number; Transformation efficiency.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000100015
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Enhancing DNA electrotransformation efficiency in Escherichia coli DH10B electrocompetent cells Electron. J. Biotechnol.
Wu,Ning; Matand,Kanyand; Kebede,Bizuayehu; Acquaah,George; Williams,Sonya.
Electrotransformation also known as electroporation is the most reliable and efficient tool for plasmid DNA uptake. Electrotransformation efficiency is function of many factors which include (1) number of cell washes prior to electroporation, (2) electroporation cell number, (3) electroporation DNA amount, and (4) cell growth phase. Those factors have limitedly been concomitantly investigated in E. coli DH10B strain. This study is aimed to explore above key factors to define the optimal conditions for high electrotransformation efficiency. The results showed that electrotransformation efficiency of E. coli DH10B was enhanced to 1.5 x 10(9) cfu/µg by washing cells three times with 15 ml of 10% glycerol. This washed off extra salts from cell suspension and...
Tipo: Journal article Palavras-chave: Cell competency; DNA; E. coli DH10B; Electroporation.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000500021
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PLANT TRANSFORMATION: ADVANCES AND PERSPECTIVES Scientia Agricola
Alves,Adriana Cristina; Quecini,Vera Maria; Vieira,Maria Lucia Carneiro.
Genetic transformation is a powerful tool for plant breeding and genetical, physiological or biochemical research, consequently it is an extremely dynamic field. Transgenic plants are commonly used to complete or substitute mutants in basic research, helping the studies of complex biological situations such as pathogenesis process, genome organization, light reception and signal transduction. In this review, recent approaches for foreign gene introduction (e.g. Agrobiolistics, whole tissue electroporation, in planta Agrobacterium transformation), screening (reporter gene possibilities and performance) and transformant selection (ipt selective marker) are discussed. Transgene expression and mechanisms underlying (trans)gene inactivation are presented....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant transformation; Agrobiolistics; Electroporation; Reporter genes; Transgenic crops.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161999000100001
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A detailed description of an economical setup for electroporation of chick embryos in ovo BJMBR
Borges,R.M.; Horne,J.H.; Melo,A.; Vidal,J.T.; Vieceli,F.M.; Melo,M.O.; Kanno,T.Y.N.; Fraser,S.E.; Yan,C.Y.I..
One of the challenges of the postgenomic era is characterizing the function and regulation of specific genes. For various reasons, the early chick embryo can easily be adopted as an in vivo assay of gene function and regulation. The embryos are robust, accessible, easily manipulated, and maintained in the laboratory. Genomic resources centered on vertebrate organisms increase daily. As a consequence of optimization of gene transfer protocols by electroporation, the chick embryo will probably become increasingly popular for reverse genetic analysis. The challenge of establishing chick embryonic electroporation might seem insurmountable to those who are unfamiliar with experimental embryological methods. To minimize the cost, time, and effort required to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Electroporation; In vivo gene expression; Electroporator; Vertebrate embryo.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900752
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Effects of the electrolytic treatment on Bacillus subtilis BJM
Tolentino-Bisneto,Rodolfo; Bidoia,Ederio D..
Conventional processes of water disinfection can generate toxic composites. It is the case of the trihalomethanes (carcinogenic) formed in the contact of chlorine with organic substances present in the water. The electrolytic treatment can be a substitute for the chlorination process without the need for addition of chemical substances to the process. The effect of the electrolytic treatment using carbon cathode on the viability of the microorganism Bacillus subtilis was tested to determine the death process. By means of electronic microscopy, it was observed that the main cause of the microorganism's death was the cellular lysis due to the electroporation in the cell membrane.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Disinfection; Electrolytic treatment; Electroporation; Electronic microscopy.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500016
Registros recuperados: 5
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