Separation and Preparation of Different Size Genomic DNA Fragments of Conus Vexillum
doi: 10.15886/j.cnki.rdswxb.2017.03.004
- Received Date: 2017-03-13
- Rev Recd Date: 2017-04-17
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Key words:
- Conus vexillum native to Hainan /
- Genomic DNA extraction method /
- Different size fragments of genomic DNA /
- Isolation and preparation /
- Pulsed field electrophoresis
Abstract: In order to provide basis for construction of the genomic library of Conus vexillum(C.vexillum),different methods were used for isolation and extraction of different size fragments of genomic DNA from C.vexillum native to Hainan.Genomic DNA was isolated from venom glands,hepatopancreas and muscle of C.vexillum using three methods of CTAB,spin column and magnetic bead respectively.The genomic DNA fragments were separated by agarose gel electrophoresis and pulsed-field gel electrophoresis,of which the size and distribution range of extracted DNA was detected.The results showed that the genomic DNA could be extracted by all the three methods.The purity and yield of DNAs isolated by CTAB and centrifugal column methods using venom gland of C.vexillum were good and high,which could meet the following experimental requirements.While the yield of the magnetic bead method is less and the purity is not good.The length of most DNA fragments isolated by the centrifugal column method was less than 9 kb,while most fragments’ sizes isolated by CTAB method were more than 20 kb.Among the three kinds of organs,hepatopancreas had highest yield of DNA,but its fragment was dispersed with degradation happened,the DNA yield of venom glands was high but less than hepatopancreas slightly,its integrity was the best;however the DNA yield of muscle was lowest and its fragments was smaller.The high quality genomic DNA fragments with different sizes were separated and prepared successfully by optimized pulsed-field gel electrophoresis.In conclusion,using CTAB method to isolate C.vexillum DNA is better than the other methods for big fragment genomic DNA library construction.Different size genomic DNA fragments recovered by pulsed-field gel electrophoresis would lay a foundation for further genomic library construction of C.vexillum using different gene library vector systems.
Citation: | DING Qing, LIU Yuepeng, ZHU Xiaopeng, WU Kebang, LUO Sulan, ZHANGSUN Dongting. Separation and Preparation of Different Size Genomic DNA Fragments of Conus Vexillum[J]. Journal of Tropical Biology, 2017, 8(3): 267-276. doi: 10.15886/j.cnki.rdswxb.2017.03.004 |