Evaluation and application of an efficient plant DNA extraction protocol for laboratory and field testing

Area of Science:

• Molecular Biology
• Biotechnology
• Plant Science

Background:

• Nucleic acid purification from plant tissues is crucial for molecular analyses.
• Existing methods like cetyl trimethylammonium bromide (CTAB) can be time-consuming and costly.
• Filter paper-based methods offer potential for rapid nucleic acid capture.

Purpose of the Study:

• To develop and evaluate a modified filter paper-based DNA extraction method for plants.
• To assess the efficiency and suitability of the EZ-D method for downstream molecular applications.
• To compare the EZ-D method with the conventional CTAB method.

Main Methods:

• Modification of a published filter paper strip method by adhering it to a polyvinyl chloride (PVC) resin sheet, termed EZ-D.
• Comparison of DNA extraction efficiency and polymerase chain reaction (PCR) amplification performance between EZ-D and CTAB methods.
• Evaluation of EZ-D extracted DNA for PCR amplification of fragments up to 3000 bp and GC content up to 80%.
• Combination of EZ-D with loop-mediated isothermal amplification (LAMP) for DNA identification.

Main Results:

• The EZ-D method provides DNA suitable for efficient PCR amplification, outperforming the CTAB method.
• EZ-D is faster, easier, and more cost-effective than the CTAB method.
• DNA extracted using EZ-D can be detected at concentrations as low as 0.1 ng/μL by PCR.
• Successful amplification of DNA fragments up to 3000 bp and 80% GC content was achieved.
• EZ-D combined with LAMP enabled DNA identification without specialized equipment.

Conclusions:

• The EZ-D method is an optimized and efficient DNA purification technique for various plant species and tissues.
• EZ-D offers significant advantages for laboratories with limited equipment and a need for rapid results.
• This method facilitates broad applications in plant molecular biology and diagnostics.