dna extraction by ctab method ppt

DNA was diluted to 1 ng l 1 with sterile distilled water. After grinding, the tissue is transferred to a tube and CTAB buffer is added. If someone says it, its wrong. The DNA extraction protocol can be completed in as little as 15 minutes and will give you a straightforward path to high-quality DNA. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. Separation step (Extraction of Protein) Organic DNA Extraction: PCI. iKjA3)])"ZcaR*.&p)n5x.9,Vjt_* K;lZe0# ;Iv1WUbg>s{x,4L4(@[xidmy)dK4^Cv$[1` 8[O16Gok9$pZBQM'!(H0RK9ra)"}Vjo7`/J1j#3g3]( eo; M(]+d[` mAQ8 rk-%wURl0]vcRBqR^W(1+.Ho)T-^gbrGvVp-{x%`1wE;b,uD^Y{_o In general, plant DNA extraction and purification can be divided into six steps: 1) tissue disruption/homogenization, 2) cell lysis in DNA extraction buffer, 3) separation of DNA from other cellular components, 4) DNA precipitation, 5) DNA washing, and 6) DNA collection/resuspension for downstream processing. CTAB serves as an important surfactant in the DNA extraction buffer system to remove membrane lipids and promote cell lysis. Elution buffer (EB) is just Tris-HCl, which gives the DNA some protection due to its pH buffering. Procedure 1. But plant tissues pose several challenges for even the most tried-and-true DNA extraction protocols. dissolved in the aqueous solution are separated from the lysis homogenate. Add 0.3% 2--mercaptoethanol to the 3 CTAB extraction buffer immediately before use. In this sense, several studies have reported the efficiency of using cocoa leaf material for DNA extraction, however, has not been considered leaf developmental stage as an important variable for obtaining high quantity and quality of DNA. Do not autoclave alcohol and phenol. Various chemical constituents of DNA extraction buffer allow effective isolation. Bromide (CTAB) protocol (developed by Murray and Thompson in 1980) is appropriate for the Genomics Era for Plants and Crop Species Advances Made and Needed Tasks Ahead. The basic principle of DNA isolation is disruption of the cell wall, cell membrane, and nuclear membrane to release the highly intact DNA into solution followed by precipitation of DNA and removal of the contaminating biomolecules such as the proteins, polysaccharides, lipids, phenols, and other secondary metabolites by enzymatic or chemical 4UYG$(. It actually challenges our knowledge to optimize things in our lab. However, other homogenization such as rotor-stator homogenizer or bead mills can be suitable. Why is DNA extraction from plants difficult? [,' u8p;le n0%j7giL (0xS6mnf6tW v;K6n8>0xx~fzNFLscB=)lo-s7iW:QxzA+ o45bW`=bN htt& Cell wall and nuclear membrane lysis- by chemical treatment, tissue homogenization using liquid nitrogen and physical grinding. iqy8D!fWJ64. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'geneticeducation_co_in-box-4','ezslot_21',149,'0','0'])};__ez_fad_position('div-gpt-ad-geneticeducation_co_in-box-4-0'); Go through this article: Why is DNA extraction from plants difficult? Now add chilled isopropanol (70%), and a pinch of NaCl to the supernatant and precipitate the DNA by inverting the tube several times. Washing and elution- By alcohol and TE (Tris-EDTA) buffer. Stabilizing and precipitating DNA- by chemical treatment using NaCl and alcohol. ), and the procedures can be done in microfuge rather than big centrifuge (faster!). (C++) the answers of assignment ( c++, 2nd edition), Cmo activar Office 2019 gratis y sin programas, Assignment 1. The more finely your tissue is ground, the more efficient you DNA extraction will be, making this a critical step for successful DNA extraction. 2023 Zymo Research Corporation. Proteinase K DNA extraction: 6. x$)FcD2k@ c@5#3Q`e^KDzqjpcm|;lm+ou>oyu?mei{:.||vtz~mG18zh]w \v?o.?;]wWv:auaw:t@-Og8ArNg(quz|JFv\'nC~w^P2uwpvRwghEPC"w;x@wb:^Q$~P9&*RlJAWfb:wT]8PJ\*u;Tut7.TJOD$F:ZTi/=l6QMoT 7j!Fq6bIXuO07:Ro2St~Ovt4',b6bJQ\v:"E While removing the aqueous phase and repeating the extraction is time consuming and laborious, it can also be challenging to remove all the aqueous phase, without disturbing the interphase. DNA extraction by CsCl density gradient centrifugation: 3. PROJECT ON WASTE WATER TREATMENT AND ENERGY PRODUCTION FROM SLUDGE AND SOLID FERMENTATION: TECHNIQUE USED FOR THE PRODUCTION OF FOOD BY MICROBES, Human glucose-6-phosphate isomerase(GPI) or phosphoglucose isomerase(PGI), PHOSPHOLIPIDS, GLYCEROPHOSPHOLIPIDS, SPHINGOMYELIN AND GLYCOLIPIDS, Simulations of Test Reduction Using Pooled Heavy Metals Analysis inCannabis, Quantized space time and Einstein's special theory of relativity.pdf. choosing a selection results in a full page refresh. DNA isolation methods are often modified and optimized for different cell types or sample sources. Modern genomics techniques have promised to revolutionize plant biology, generating data to accelerate crop improvement, optimize plant selection, and advance our basic understanding of plant biology.1 Such techniques and applications rely on the extraction of high-quality DNA from a variety of distinct plant species and sample types. Under these Precipitation Part I: phenol/chloroform extraction to get rid of proteins. DNA precipitates, resembling a thread of translucent white snot, at the interface between the juice and alcohol. INSTRUCTION: If you will be using it a lot, consider making multiple smaller aliquots, since repeated freeze/thawing will deteriorate the quality. Tris-HCl gives the solution a pH This is because the base pairs in DNA absorb UV light, therefore amount of bp is directly proportional to DNA concentration. Be careful, take the only supernatant, and dont mix the supernatant with the debris. *n1cFPw What is the Role of Alcohol in DNA extraction? Conclusively, PVP and beta-mercaptoethanol must be there in the plant DNA extraction buffer with the CTAB. 1.05K subscribers The CTAB method yields high quality plant genomic DNA that can be used for virtually any application including genotyping and Illumina sequencing. It is made up of a long phenolic ring and secreted during tissue damage, thus during the lysis process. recovery of dna from agarose gel, rajendra prasad central agricultural university. Ch13 - Chapter 13 solution for Intermediate Accounting by Donald E. Kieso, Jerry J. Plant cell walls are very difficult to break down and the cells contain many compounds that impede extraction and inhibit downstream molecular biology applications. From grinding with a mortar and pestle to resuspending sticky DNA pellets, the full CTAB protocol can take approximately two hours to process a small number of samples. Performed Steam Distillation, Gas Chromatography-Mass Spectrophotometry and Fractional Distillation to extract rose oil and its essential components. In addition, plant DNA extraction is even a difficult task to execute because of their specialized cell structure and composition. Lets see how it works and how to optimize the CTAB buffer for plant DNA extraction.. However, care must be taken while handling liquid nitrogen. Na-acetate: 3M sodium acetate in RO water, sterilise by autoclaving (dont need to adjust pH). DNA EXTRACTION: These two solvents are generally considered hazardous. Conclusion: Heat may be used to extract DNA from K . The DNA extraction methods used were Cetyltrimethylammonium bromide (CTAB) and Commercial Kit (Geneaid; Genomic DNA Mini Kit Tissue), with variations in the number of nematodes: 1, 5, 10, 15 and . Screening of enrichment cultures of Thermococcales has revealed an unexpected diversity among VLPs (virus-like particles) in deep-sea hyperthermophilic environments. Lysis: Tissue grinder and use detergent. Ch05 - Chapter 05 solution for Intermediate Accounting by Donald E. Kieso, Jerry J. Honey is a natural product widely consumed all over the world due to its relationship with healthy benefits. But differences in the cell structure and chemical composition of a cell require a different DNA extraction setup. It is imperative that sufficient cells are collected. CTAB - DNA precipitation DNA is hydrophilic and dissolves in water but not in alcohol To separate the DNA from the cell debris, alcohols and salts are used Organic solvents are used to separate the DNA to an aqueous phase, leaving lipids and proteins in the organic phase. We use cookies to track visits to our website, and we don't store any of your personal details. Tissue grinding can vary between samples, leading to significant variation in extraction efficiencies and quality of DNA. Other methods of DNA extraction include salting out , cesium chloride density gradients , and chelex 100 resin [16, 17]. So these three things (cell wall composition, secondary metabolites and turgor pressure) need advanced treatments. Add 500 l 70% ethanol, resuspend pellet by flicking, allow to sit for ~5 min at room temp, then spin and drain again. On with Nicks notes! Same volume of isopropanol is added into supernatant to make DNA pellet. Sterile pestle and mortar Edwards et al. Let me know if it works should you try it though! A total of 30 samples of five algal genus were used in this study. RNase A can be added to remove RNA either add this at the start of the prep, or to the dissolution buffer used at the end of the prep. How To Extract DNA From Whole (Fresh), Frozen, Dried and Clotted Blood? The following stock solutions and reagents were prepared by mixing the standard amount of chemicals. 0 Reagents 1. See how we can help you extract high-quality plant DNA, in less time. By accepting, you agree to the updated privacy policy. Discard pellet and take supernatant in another tube, Wash the sample with the alcohol (minimum 2 wash). c*f(M=;"]txGyFUHIEW8[WE%:8ioGSTzPF*G@ ioE Gw.:S /vR.fP" pbgQ$C e;=AE-0I's>rEwd z.Ar1-tAMF.~V\2;MC#:- 54o)IR pZ|h!0"# It instantly froze tissue below its freezing temperature and eventually ruptures the cell wall. Previous studies demonstrated that Tannin is a proven PCR inhibitor that suppresses PCR amplification and remains bound with the DNA. H|W~qbqh%oa7_$? H Use of phenol/chloroform also generates organic waste which requires special storage containers and disposal procedures. 37 0 obj <> endobj %%Jb4jgAgluFd&Hw4[hply_.FnZL1ywbIWuB}^zl|pq. We've updated our privacy policy. You can read the details below. 4. In contrast to the original method, the . 0000002471 00000 n K to 0.5 mg/ml, incubate 60C 1-16 h). Dellaporta (1983) and Maroof et al., (1984) have optimized the existing protocols and developed excellent methods for plant DNA extraction. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. Add liquid nitrogen and grind vigorously and add a lysis buffer, simultaneously. extraction method is a simple and non-toxic technique that isolates a high-quality DNA from the whole blood. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. UYZsOhq9_&`YWJ+lZ^m]QfPZ^&UTj`F,M^Mmh!.8MLAnJ^gM>LXI=uC2s Ck@1o(T|! Wash with around 700 L of 70% ethanol. However, TE can interfere with subsequent enzyme reactions (EB wont). Chloroform is toxic by inhalation and will also damage eyes. 3. Rl%= In addition, working with phenol and chloroform is also a biosafety hazard: Phenol can cause chemical burns and chloroform is a potential carcinogen.6,7 For many food testing labs, the use of these toxic chemicals is a major concern. apart, the purification of DNA is performed. It will surely make things easy. This method will help the researchers to efficiently isolate DNA from . 2- Digestion . Breaking cells open to release the DNA. Since DNA is insoluble in these alcohols, it will aggregate together, giving a pellet upon centrifugation. Manufacturers recommend homogenization of samples with mortar and pestle in presence of liquid nitrogen. 0000001112 00000 n Molecular genetic techniques are an effective monitoring tool, but high-quality DNA samples are usually required. You choose the most appropriate method ! (CTAB) contained in the extraction buffer. stream w;owwllND\| In this study, we demonstrate a modified CTAB method for the isolation of DNA to maximize the quality and yield from small aphids. The method needs to be modified for use on Gram-positives or yeast etc, by adding on extra lysis treatments at the 'front end' of the protocol. % Mix vigorously and incubate in water bath at 65C for 1 hr. Leaf samples of two diseased and two asymptomatic plants were collected, and DNA was extracted using a modified CTAB DNA extraction method (Murray & Thomson, 1980). CTAB extraction buffer, the detergent captures the lipids and the proteins allowing the Muhammad I, Zhang T, Wang Y, et al. suitable for the elimination of polysaccharides and polyphenolic compounds otherwise affecting The first, and now the most numerous, organisms isolated from deep-sea hydrothermal vents belong to the order Thermococcales, within the Euryarchaeota in the domain Archaea. If youre working with a challenging plant species, such as cacao and cannabis, try out our state-of-the-art BashingBeads for more complete lysis and more consistent yields (Figure 2).11-14. Alex: Gee, thats a lot of chloroform, might be a while before I risk trying this protocol. There are two reasons for that. ucdavis. Tap here to review the details. Tap here to review the details. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . The structure is explained in the figure below. Modification of CTAB protocol for maize. Step 1. This plasmid, pGT5, is a stable multicopy plasmid (2530 copies per chromosome) and can be isolated from cultures at different growth phase and in the temperature range from 75 up to 105oC. membranes (such as those around the mitochondria and chloroplasts) have been broken Fast ID contains powerful denaturants and DNA-selective Learn faster and smarter from top experts, Download to take your learnings offline and on the go. Extraction of genomic DNA from the lipid-, polysaccharide-, and polyphenol-rich coconut (Cocos nucifera L.). Saturated NaCl was needed for the proteins to precipitate out of the solution. They are in general neutrophilic, strictly anaerobic hyperthermophilic peptide and sugar fermenters, that can reduce elemental sulfur to hydrogen sulfide (Palaeococcus may use ferric iron as electron acceptor), and they are rather easy to handle and to grow in the laboratory, probably because they are oxygen-resistant, if exposure occurs at room temperature or below. For this >,xPD/-}V62h (s['HXGF=_fCUVY~ .ET_Xwk6A.xYkNMaR^+C?x'"LhaxDU|&O'Z Former website http://biogeek. The DNA from leaf samples of agarwood-producing plants was isolated using the CTAB method (Gholibeigian 2021) The matK, ITS, and trnL-trnF gene fragments were sequenced and used to confirm the . A micro-level optimization is required to use it for our use. polysaccharides in a high-salt environment. Results from six grams of leaf tissue finely ground using a mortar and pestle, then aliquoted (1 g) for each extraction. DNA extraction Method for plant sample using CTAB method. First, they dont know which buffer to use and second, they even dont know how to use it. 0000002963 00000 n The Beauty of Science is to Make Things Simple, How to Choose a DNA and RNA Purification Kit, Picka DNA or RNA Purification Kit That Meets Your Needs, DNA Methylation Profiling and evolutionary history of modern man, How to get quality DNA for ChIP Sequencing. (1991) used 0.5% SDS with the CTAB buffer and developed a simple plant DNA extraction protocol. Liquid nitrogen (if available) Add the beta-mercaptoethanol just before the use. Removing proteins by adding a protease (optional but almost always done). Take 5gms of fresh plant tissue and cut it into small pieces. If DNA precipitates are not observed after the addition of the chilled alcohol, then place the tube at -20C for 15 to 20 minutes and re-precipitate it. The Graduate's Guide to Synthetic Biology. Add 1/10 volume Na-acetate (50 l) and 2 vol. Note: If the DNA does not clump together, students can draw up the solution with a pasteur pipette or an eye dropper. Various chemical constituents of DNA extraction buffer allow effective isolation. Nucleospin Plant II designed for efficient extraction of genomic DNA from plant tissue using CTAB or SDS lysis buffer. DNA was extracted directly from freshly harvested leaves ground in pre-heated CTAB buffer. Techniques covered include genomic DNA extraction using cetyl trimethylammonium bromide (CTAB) and chloroform extraction, chromatographic techniques, ELISA, hybridization, gel electrophoresis, dot blot analysis and methods for studying polymerase chain reactions. How to Prepare Lysis Buffer for Different Types of DNA Extraction Methods? The DNA is purified by incubating the nucleic acid solution with RNase A (10mg/ml) at 37C and reprecipitation following phenol: chloroform extraction to remove the RNase. CTAB Method Abbreviated: Cetyl trimethylammonium bromide Function: CTAB buffer is used to lyse plant cells in the same way SDS is used to lyse bacterial cells. CTAB buffer (preheated at 65C for 15 min.) High molecular weight DNA yield in the range of 328 to 4776 ng/L with an average . Download our ebook: From DNA Extraction to PCR, Plant DNA extraction needs a CTAB DNA extraction buffer that contains ingredients that can effectively remove polysaccharides and polyphenols. Along with CTAB, chemicals like SDS and PVP gave an excellent yield for Corn and Soybeans. Afterward, the homogenized sample would be incubated with lysis buffer and protease enzyme for effective lysis of the cell wall. Water bath set at 65C This research evaluated five genome extraction methods including Protocol A (main CTAB), Protocol B (CTAB without -mercaptoethanol), Protocol C (CTAB without ammonium acetate), Protocol D (modified method of Murray and Thompson), and Protocol E (Gene All-Kit), to determine their ability to extract DNA from fresh and herbarium leaves of A. fridae. In 1980, Murray and Thompson proposed an inexpensive and simple protocol for plant DNA extraction by CTAB. 4. Precipitation Part II: addition of salts to interrupt hydrogen bonding between water and phosphates on the DNA. DNA extraction is a process of isolating DNA. For example, cetyltrimethylammonium bromide (CTAB) and guanidium thiocyanate (GITC) are often included in protocols for DNA . CTAB DNA extraction: 5. Techniques of DNA Extraction, Purification and Quantification, Nucleic Acid Quantification Methods - DNA / RNA Quantification, Isolation and purification of microbial c, DNA- Basics on isolation, quantification, storage, Application of molecular technology in biotechnology, Sarhad University of Science and Technology, Biotechnology experiments 2nd semester (LNMU Darbhanga), International Medicine School - Management and Science University, Dna extraction strawberry lab spring 2015, Extraction buffer, Protease inhibitors methods of cell distrubtion, KYBELLA AND OTHER FILLERS USED FOR BEAUTY ENHANCEMENT. CTAB protocol for the isolation of DNA from difficult tissues (high levels of secondary metabolites or polysaccharides), herbarium and soil. However, the use of a CTAB buffer will surely help in the majority of cases. Salting-out method. A solution of phenol/chloroform/isoamyl alcohol is used to extract plant DNA from cellular debris and once added and vortexed, the mixture separates into three distinct phases: aqueous, interphase, and organic phase. The extraction is repeated on the aqueous phase until it becomes completely clear, and all DNA is collected. method, providing an overview before delving deeper into the procedure in a step-by-step approach. The precipitate is pelleted by centrifugation and washed with 70% ethanol to remove salts introduced during extraction. Avoid using 2 or more days-old CTAB solutions. The evaluated items included DNA . Isolation of good quality DNA is a fundamental first step in insect DNA barcoding which is obtained by standardizing the DNA isolation method. Modified DNA extraction protocol i. Preheat the 3 extraction buffer in water bath at 65 C. Extraction of DNA, RNA, and protein is the basic method used in molecular biology. Extraction: In this step, polysaccharides, phenolic compounds, proteins and other cell lysates A General DNA extraction scheme includes cell lysis, removal of contaminant and DNA stabilizing, precipitation and elution steps. EB (Elution buffer): 5 mM Tris-HCl. A complete view. Use PCI (phenol: chloroform: isoamyl alcohol) in combination with the CTAB buffer. edu/Mstats/. 10 Secret Tips for DNA Extraction to Get Good Results. Spin for 5-10 min at 13,000 rpm. A qPCR Assay for the Fast Detection and Quantification of Colletotrichum lupini. Application of Genome Wide Association and Genomic Prediction for Improvement of Cacao Productivity and Resistance to Black and Frosty Pod Diseases. Genomic DNA extraction and amplicon generation. Free access to premium services like Tuneln, Mubi and more. 13,000 rpm at 4C for 10 min, collect the supernatant to a new eppendorf tube, add 600 L of The positively charged CTAB can readily bind with the negatively charged glycoproteins during protein electrophoresis. Ethanol and NaCl are used to remove plants polysaccharides. To make things even more effective use RNase as well in combination with proteinase K. Proteinase K and RNase are commercially available. Extraction(CTAB) Buffer 1.4 M Na Cl In this case, it is recommended to add an isopropanol precipitation step after the first chloroform extraction, then do a 70% ethanol rinse, dry pellet, redissolve in 1-2 ml TE. endstream endobj 38 0 obj <> endobj 39 0 obj <>/Font<>/ProcSet[/PDF/Text]>>/Rotate 0/Type/Page>> endobj 40 0 obj <> endobj 41 0 obj <> endobj 42 0 obj <> endobj 43 0 obj <> endobj 44 0 obj <> endobj 45 0 obj <> endobj 46 0 obj <> endobj 47 0 obj <>stream Let me explain to you in brief, turgor pressure is water pressure that occurs from inside the cell to the cell wall. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Government Pharmacy College Sajong, Government of Sikkim, University of Horticultural Sciences, Bagalkot, Endosperm culture and somatic embryogenesis, Biotechnology experiments 2nd semester (LNMU Darbhanga), Genomic Dna Isolation From Blood, Bacteria and Plasmid DNA Isolation, Lectut btn-202-ppt-l16. %PDF-1.4 % 2. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. Rapid isolation of high molecular weight plant DNA. A proteinase K step could be added at the same point as the lysozyme step, or immediately after the lysozyme step (add prot. Spin at top speed in microfuge (cold if possible) 10 min, drain off ethanol, retain pellet. Remember that genomic DNA means all the DNA, so this method extracts both chromosomes and plasmids. A comparison of DNA extraction methods used in research labs as opposed to classroom labs. Despite the existence of a huge collection of Thermococcales strains, very few plasmidic elements are reported so far in the hyperthermophilic euryarchaeotes. Autoclave all the utilities prior to use including solutions. This protocol can be used on most gram-negative bacteria to obtain high-quality genomic DNA, which is both pure and very high molecular weight. and transfer the powder or 600 L of However, too much ethanol is also BADDNA will float out of wells on gel. CTAB Protocol for Isolating DNA From Plant Tissues, the cetyltrimethylammonium bromide (CTAB) method, various modifications for different plant species, development and optimization of a one size fits all CTAB protocol difficult. addition of glycine and/or ampicillin to weaken cells. Start with sample preparation, clean the tissue and prepare it for homogenization. Wash cell pellet in TE (resuspend then pellet again) before lysis if nuclease activity is a problem. Removal of contaminants and other cell debris- by chemical treatment using SDS, CTAB, PVP, beta-mercaptoethanol and Triton X 100, etc. Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. The CTAB Method: DNA Extraction from Plant Leaves and Seeds To overcome the challenges presented by plant tissues, the cetyltrimethylammonium bromide (CTAB) method has become the "go-to" protocol for DNA extraction and purification from leaves and seeds. Cell lysis is aided with a CTAB buffer, which also stops secondary metabolites from obstructing DNA extraction. A modified CTAB method was applied to carry out molecular marker analysis to isolate good-quality DNA from . The method needs to be modified for use on Gram-positives or yeast etc, by adding on extra lysis treatments at the front end of the protocol. 6- Dilute . Method of DNA extraction: Many different methods and technologies are available for the isolation of genomic DNA. Care must be taken while handling CTAB as it has corrosive and toxic properties. The first is a small (3.5 kb) cryptic plasmid found in a high copy number in the marine species P. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'geneticeducation_co_in-leader-1','ezslot_23',145,'0','0'])};__ez_fad_position('div-gpt-ad-geneticeducation_co_in-leader-1-0'); Homogenization is a process to prepare a homogeneous mixture of plant tissue using tissue homogenization techniques like physical grinding using a Mortar and pestle. additional purification, or wash, of the nucleic acid from the remaining salt. Sterile Eppendorf tubes and desired reagents. Corpus ID: 102206113; Comparison of Four Methods of DNA Extraction from Needles of Pinus tabulaeformis @article{Ming2012ComparisonOF, title={Comparison of Four Methods of DNA Extraction from Needles of Pinus tabulaeformis}, author={Li Ming}, journal={Hubei Agricultural Sciences}, year={2012} } mix gently by inverting and spin at 13,000 rpm at 4C for 10 min. step (Lysis of White blood cells, WBC) 3- Phase . For the extraction and purification of DNA from leaves and seeds, cetyltrimethylammonium bromide (CTAB) is the "go-to" procedure. 0000002720 00000 n 2 0 obj Techniques covered include genomic DNA extraction using cetyl trimethylammonium bromide (CTAB) and chloroform extraction, chromatographic techniques, ELISA, hybridization, gel electrophoresis, dot blot analysis and methods for studying polymerase .

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dna extraction by ctab method ppt