🦠microbiology review

Golden algae

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

Definition

Golden algae are a group of photosynthetic protists belonging to the class Chrysophyceae. They are predominantly found in freshwater environments and are known for their golden-brown color due to the presence of pigments such as fucoxanthin.

5 Must Know Facts For Your Next Test

  1. Golden algae contain chlorophylls a and c, as well as accessory pigments like fucoxanthin, which give them their distinctive color.
  2. These algae can reproduce both sexually and asexually, with asexual reproduction typically occurring through binary fission or formation of spores.
  3. Some species of golden algae can form cysts to survive unfavorable environmental conditions.
  4. Golden algae play a significant role in aquatic ecosystems by contributing to primary production and serving as food for other organisms.
  5. They can cause harmful algal blooms (HABs) under certain conditions, leading to fish kills and other ecological disturbances.
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