Root Inoculation Assay

Grow C. graminicola in Potato Dextrose Agar media for 2-3 weeks.

  1. Sterilize the surface of the seeds by following the Corn Seed Sterilization protocol.
  2. Wash vermiculite by placing it in a container for 2½ hours then pour out the water and autoclave for two hours. Allow the soil to cool.
  3. Fill 50ml tubes with 40ml of vermiculite.
  4. Cut plaques out of the 2-3 week culture of C. graminicola and place a layer of these over the soil.
  5. Add 5ml of soil to the tubes then place the seed in the tubes.
  6. Cover the seed with 5ml of vermiculite.
  7. Seal the top of the tubes using parafilm paper.
  8. Grow the plants under direct light at 28° C.
  9. After 3-4 days, as soon as the plants start to hit the parafilm, make a hole in the parafilm seal.
  10. Plants should be ready for observation 19-21 days after planting.

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