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Kania K, Levytska A, Drożak A, Andrzej B, Paweł D, Zienkiewicz M. The effect of temperature conditions during growth on the transformation frequency of Coccomyxa subellipsoidea C-169 obtained by electroporation. Biochem Biophys Rep 2022; 30:101220. [PMID: 35198739 PMCID: PMC8844808 DOI: 10.1016/j.bbrep.2022.101220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/27/2021] [Accepted: 01/22/2022] [Indexed: 10/26/2022] Open
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2
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Batista Napotnik T, Miklavčič D. In vitro electroporation detection methods – An overview. Bioelectrochemistry 2018; 120:166-182. [DOI: 10.1016/j.bioelechem.2017.12.005] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 12/11/2017] [Accepted: 12/11/2017] [Indexed: 12/22/2022]
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3
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Plant cell electrophysiology: Applications in growth enhancement, somatic hybridisation and gene transfer. Biotechnol Adv 2013; 31:1237-46. [DOI: 10.1016/j.biotechadv.2013.03.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 03/24/2013] [Indexed: 02/01/2023]
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4
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Physical methods for genetic plant transformation. Phys Life Rev 2012; 9:308-45. [DOI: 10.1016/j.plrev.2012.06.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2012] [Accepted: 06/04/2012] [Indexed: 01/27/2023]
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Frequency and voltage effects on enhanced diffusion during moderate electric field (MEF) treatment. INNOV FOOD SCI EMERG 2003. [DOI: 10.1016/s1466-8564(03)00003-1] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Jemai AB, Vorobiev E. Effect of moderate electric field pulses on the diffusion coefficient of soluble substances from apple slices. Int J Food Sci Technol 2002. [DOI: 10.1046/j.1365-2621.2002.00516.x] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Chen GY, Conner AJ, Wang J, Fautrier AG, Field RJ. Energy dissipation as a key factor for electroporation of protoplasts. Mol Biotechnol 1998; 10:209-16. [PMID: 9951699 DOI: 10.1007/bf02740840] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Energy dissipation (epsilon) during electroporation was theoretically determined to be epsilon = 0.5CV02 for the various combinations of capacitance (C) and initial voltage (V0). Experiments on asparagus protoplasts established that electroporation efficiency (EE) and survival rate were directly proportional to energy dissipation during electroporation. A positive linear relationship exists between energy dissipation per unit volume and EE, whereas energy dissipation per unit volume and survival rate of protoplasts are related in a negative linear manner. At the same energy level, longer time constants were more effective at increasing EE. This suggests that energy dissipation approximating rectangular waveforms is more important than that dissipated as sharply decaying exponential waveforms. With energy as the key parameter, the optimization of electrical parameters for efficient electroporation is greatly simplified, is not machine-dependent, and generally applies to all species.
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Affiliation(s)
- G Y Chen
- Department of Plant Sciences, Lincoln University, Canterburry, New Zealand
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8
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Chowrira GM, Akella V, Fuerst PE, Lurquin PF. Transgenic grain legumes obtained by in planta electroporation-mediated gene transfer. Mol Biotechnol 1996; 5:85-96. [PMID: 8734422 DOI: 10.1007/bf02789058] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Electroporation-mediated gene transfer into intact plant tissues was demonstrated in pea, cowpea, lentil, and soybean plants. Transient expression of a chimeric gus reporter gene was used to monitor the uptake and expression of the introduced DNA in electroporated nodal axillary buds in vivo. The branches that grew out of the nodal meristems were chimeric and expressed the introduced gene up to 20 d after electroporation. Transgenic R1 pea, lentil, and cowpea plants were recovered from seeds originating on these chimeric branches as shown by Southern blot hybridization and GUS expression. Transgenic R2 soybean and lentil plants were also obtained. Segregation ratios in these populations showed a strong bias against transgene presence or expression.
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Affiliation(s)
- G M Chowrira
- Department of Genetics and Cell Biology, Washington State University, Pullman 99164-4234, USA
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Saunders JA, Lin CH, Hou BH, Cheng J, Tsengwa N, Lin JJ, Smith CR, McIntosh MS, Van Wert S. Rapid optimization of electroporation conditions for plant cells, protoplasts, and pollen. Mol Biotechnol 1995; 3:181-90. [PMID: 7552687 DOI: 10.1007/bf02789328] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The optimization of electroporation conditions for maximal uptake of DNA during direct gene transfer experiments is critical to achieve high levels of gene expression in transformed plant cells. Two stains, trypan blue and fluorescein diacetate, have been applied to optimize electroporation conditions for three plant cell types, using different square wave and exponential wave electroporation devices. The different cell types included protoplasts from tobacco, a stable mixotrophic suspension cell culture from soybean with intact cell walls, and germinating pollen from alfalfa and tobacco. Successful electroporation of each of these cell types was obtained, even in the presence of an intact cell wall when conditions were optimized for the electroporation pulse. The optimal field strength for each of these cells differs, protoplasts having the lowest optimal pulse field strength, followed by suspension cells and finally germinating pollen requiring the strongest electroporation pulse. A rapid procedure is described for optimizing electroporation parameters using different types of cells from different plant sources.
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Dieryck W, Gruber V, Baudino S, Lenee P, Pagnier J, Merot B, Poyart C. [Expression of recombinant human hemoglobin in plants]. Transfus Clin Biol 1995; 2:441-7. [PMID: 8646339 DOI: 10.1016/s1246-7820(05)80069-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Human utilization of recombinant proteins of therapeutical interest, as hemoglobin, implies that the transgenic host allows a low cost production of the active proteins with minimal risks of pathogen contamination. In this regard, the use of transgenic plants could be of great interest. In particular, the systems based on plants could be one of the most economical transgenic system, compared with the others, because biomass obtention in fields is not expensive.
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Affiliation(s)
- W Dieryck
- INSERM U299, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
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11
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Affiliation(s)
- G A Neil
- Department of Internal Medicine, University of Iowa, Iowa City 52242
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12
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Krens FA, Jamar D, Rouwendal GJ, Hall RD. Transfer of cytoplasm from newBeta CMS sources to sugar beet by asymmetric fusion : 1. Shoot regeneration from mesophyll protoplasts and characterization of regenerated plants. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 1990; 79:390-396. [PMID: 24226359 DOI: 10.1007/bf01186084] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/1989] [Accepted: 11/30/1989] [Indexed: 06/02/2023]
Abstract
For our program on the transfer of cytoplasmic male sterility (CMS) by cybridization inBeta vulgaris L. (sugar beet), we have developed a procedure for the isolation and culture of mesophyll protoplasts of sugar beet followed by shoot regeneration. A prerequisite proved to be the presence in the media of n-propylgallate (nPG), a lipoxygenase inhibitor. Sustained divisions were found in all accessions that were tested. Plating efficiencies and regeneration ability varied greatly from one experiment to the other and appeared to be accession-dependent. Shoots could be easily transferred to soil. A majority of the regenerants (72%) retained the diploid chromosome number. Somaclonar variation in phenotype was low (4.9%). Mitochondrial DNA probes, capable of discriminating different cytoplasms ofBeta spp. showed no rearrangements due to the protoplast and in vitro culture phase, indicating that these probes can be used to identify cybrids after asymmetric fusions. The data presented here open up possibilities for genetic engineering using protoplasts in one of the world's most important arable crops.
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Affiliation(s)
- F A Krens
- Centre for Plant Breeding Research, P.O. Box 16, NL-6700, AA Wageningen, The Netherlands
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Lindsey K, Jones MG. Stable transformation of sugarbeet protoplasts by electroporation. PLANT CELL REPORTS 1989; 8:71-74. [PMID: 24232987 DOI: 10.1007/bf00716841] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/1989] [Revised: 01/20/1989] [Indexed: 06/02/2023]
Abstract
Conditions were optimized for the culture, antibiotic selection and stable transformation by electroporation of suspension culture protoplasts of sugarbeet,Beta vulgaris L.. Highest plating efficiencies (up to 65% at day 21) were obtained if protoplasts were cultured in PGO salts (de Greef and Jacobs, 1979) supplemented with 0.1 mg/1 2,4-D, 0.01 mg/l BAP and 9% mannitol, and in 0.6% agarose rather than in liquid medium. Sensitivity to kanamycin also depended on whether protoplasts were cultured in liquid or agarose medium. Stable transformation of protoplast-derived colonies, as determined by resistance to kanamycin and Southern blot analysis, was achieved by electroporation using both rectangular and exponentially-decaying pulses.
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Affiliation(s)
- K Lindsey
- Department of Biochemistry, AFRC Institute of Arable Crops Research, Rothamsted Experimental Station, AL5 2JQ, Harpenden, Herts, UK
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Mehrle W, Hampp R, Zimmermann U. Electric pulse induced membrane permeabilization. Spatial orientation and kinetics of solute efflux in freely suspended and dielectrophoretically aligned plant mesophyll protoplasts. BIOCHIMICA ET BIOPHYSICA ACTA 1989; 978:267-75. [PMID: 2914141 DOI: 10.1016/0005-2736(89)90124-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Asymmetric breakdown (occurring in only one hemisphere of the cell) was induced in freely suspended and dielectrophoretically aligned vacuole-containing or evacuolated plant protoplasts as well as in isolated vacuoles. In suspended cells breakdown was restricted to the hemisphere facing the anode and in isolated vacuoles to the opposite hemisphere. This difference in the orientation of the asymmetric breakdown can be explained by the opposite direction of the intrinsic membrane potentials of isolated vacuoles and of cells on which the generated potential difference is superimposed. The ensuing permeabilization of the membrane was microscopically monitored by dye uptake and by release of chloroplasts and of cytoplasmic and/or vacuolar solutes. The asymmetric release of intracellular substances (organic acids and/or amino acids) was detected by accumulation of chemotactic bacteria (Pseudomonas aeruginosa) close to the permeabilised membrane area of the cells or vacuoles. Maximum bacteria accumulation required about 5 min and subsequently disappeared after a further 20 min presumably because of the restoration of the original membrane impermeability. With vacuoles retention of the accumulated bacteria was shorter indicating that the resealing process of the tonoplast membrane was faster than that of the plasmalemma. From the kinetics of bacteria accumulation and retention it is therefore possible to deduce information about the life-span and the resealing properties of electropermeabilized membrane areas on the single-cell level. Symmetric breakdown in both hemispheres of the cells could be achieved by electric field-mediated cell rotation of about 180 degrees between two pulses of the same polarity or by application of two pulses of alternating polarity. In dielectrophoretically aligned protoplasts of comparable diameter, breakdown occurred in both hemispheres, even though the breakdown was still asymmetric. It could be demonstrated by the uptake of the vital dye neutral red that the size of the membrane area which was permeabilized was much larger in that hemisphere oriented to the anode than in the other one. The relevance of these observations for further improvement of electroinjection of macromolecules and of electrofusion is discussed. In particular, it is pointed out that positioning of differently sized cells in electric field-mediated hybridisation and the polarity of the breakdown pulse is of great importance with respect to hybrid yield.
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Affiliation(s)
- W Mehrle
- Institut für Biologie I, Universität Tübingen, F.R.G
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Lindsey K, Jones MG. Transient gene expression in electroporated protoplasts and intact cells of sugar beet. PLANT MOLECULAR BIOLOGY 1987; 10:43-52. [PMID: 24277462 DOI: 10.1007/bf00014185] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/1987] [Accepted: 09/14/1987] [Indexed: 06/02/2023]
Abstract
Factors influencing the transient expression of introduced foreign DNA in electroporated protoplasts and intact cells of sugar beet were determined by assaying for the activity of chloramphenicol acetyltransferase (CAT), using a rectangular pulse generating system. Extractable CAT activity depended upon 1) applied plasmid DNA concentration, 2) protoplast density, 3) the interaction between pulse field strength, duration, number, time interval between pulses and the resultant effect on culture viability, and 4) the physiological state of the protoplasts. Mesophyll protoplasts were more susceptible to damage by electroporation, and were more specific in their requirement for electroporations which allowed CAT expression, than were protoplasts derived from suspension culture cells. CAT activity was also demonstrated, at low levels, after electroporation of intact suspension culture cells, and could be increased by pectinase treatment of the cells before electroporation.
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Affiliation(s)
- K Lindsey
- Rothamsted Experimental Station, Biochemistry Department, AFRC Institute of Arable Crops Research, AL5 2JQ, Harpenden, Herts, UK
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