Modified Promega Wizard Extraction for Barcoding Macrofungi
Stephen Douglas Russell
Abstract
This protocol is best used when preparing macrofungal specimens for Sanger sequencing or as a secondary extraction protocol for ONT nanopore barcoding.
Steps
Add 600uL of
Place tissue from your specimens into each tube using tweezers. Utilize a piece about the size of a grain of rice. The tissue can be either fresh or dried. Label the tube with the appropriate number. Wipe the tweezers off with a Kimwipe or paper towel in between each specimen. These tubes can be stored at room temperature until they are ready to be used.
Grind the tissue in each tube using a sterile pestle.
Heat the tubes at 65°C
for 0h 15m 0s
.
Centrifuge the tubes for 0h 3m 0s
.
Transfer the supernatant (liquid on top) to a new 1.5mL eppi tube.
Add 200µL
of
Vortex the tube for 0h 0m 20s
.
Centrifuge the tube for 0h 6m 0s
.
Transfer the supernatant (liquid on top) to a new 1.5mL eppi tube.
Add 600µL
of 100%
Centrifuge the tube for 0h 1m 0s
. The DNA will now be in a pellet stuck to the bottom of the tube.
Discard the supernatant. It can just be poured out of the tube into a waste container.
Add 600µL
of 70% ethanol to the tube.
Centrifuge the tube for 0h 1m 0s
.
Discard the supernatant. It can just be poured directly out of the tube into a waste container.
Place the tube upside down on a Kimwipe for at least 0h 15m 0s
, or until all of the ethanol has evaporated from the tube. I usually leave the tube to dry overnight.
Add 30uL of molecular water to the tube.
Your DNA template is now ready for amplification.