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Home | Background | Support the Project | Tissue Culture & Transformation | Blight Resistance Gene | Demo of Blight Resistance

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  • 1. Gather your supplies including an actively growing culture of Cryphonectria parasitica (the blight fungus). In these videos we used strain EP155.

  • 2. Make two marks with a felt pen 5 mm apart.

  • 3. Carefully cut a consistent, vertical wound between the marks.

  • 4. Using a #2 cork borer, cut mycelial plug from the leading edge of the fungal colony.

  • 5. Place mycelial side up on pre stretched parafilm.

  • 6. Press the mycelial plug against the wound making sure it stays in place.

  • 7. Wrap the parafilm tight to prevent drying of the plug and wait 7 to 21 days for results.

Small Stem Assay Method
Enhanced Blight Resistance in Transgenic American Chestnut
The American Chestnut Research and Restoration Project

The slides and captions to the right provide a step-by-step overview of the small stem assay method. Mouseover the left or right arrow to pause a slide.