🔬general biology i review

Haustoria

Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025

Definition

Haustoria are specialized structures formed by parasitic fungi to penetrate host tissue and absorb nutrients. They play a crucial role in the parasitic relationship between fungi and their plant hosts.

5 Must Know Facts For Your Next Test

  1. Haustoria are essential for nutrient exchange between parasitic fungi and their host plants.
  2. They can penetrate the cell walls of plant cells without breaching the plasma membrane.
  3. Haustoria facilitate the transfer of water, sugars, and other nutrients from the host to the fungus.
  4. They are commonly found in obligate biotrophic fungi such as rusts and mildews.
  5. Haustoria represent a key adaptation that enables some fungi to successfully colonize living plant tissue.
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