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A modified protocol for rapid DNA isolation from cotton (Gossypium spp.)
Qasim Ali1, Ibrahim Bala Salisu1,2, Ali Raza3
1Centre of Excellence in Molecular Biology, University of the Punjab, Lahore-54000, Pakistan.
Methodsx
|February 23, 2019
Summary
This study presents a fast, inexpensive DNA extraction method for cotton (Gossypium) species. The protocol yields high-quality DNA suitable for genetic mapping and marker-assisted breeding, overcoming common extraction challenges.
Area of Science:
- Plant genetics
- Molecular biology
- Biotechnology
Background:
- High-quality DNA extraction from Gossypium species is challenging due to secondary metabolites.
- Existing methods are often time-consuming, hazardous, or require specialized equipment.
Purpose of the Study:
- To develop a simple, rapid, and cost-effective DNA extraction protocol for cotton.
- To ensure the extracted DNA is suitable for downstream genetic analyses.
Main Methods:
- Modified CTAB method utilizing high NaCl concentration and PVP-10.
- Incorporation of Ribonuclease A before chloroform extraction.
- Redesigned buffers A and B.
Main Results:
- Achieved average DNA yield of 10-15 μg per 100 mg of tissue.
- Protocol completed in as little as 3 hours.
- DNA quality is suitable for genetic mapping and marker-assisted breeding.
Conclusions:
- The developed method provides a rapid and efficient way to isolate high-quality DNA from cotton.
- This protocol is adaptable for high-throughput DNA isolation and reduces reliance on hazardous reagents.
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