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PROTISTS & FUNGI

This lecture explores the fascinating world of stramenophiles and red algae, emphasizing their photosynthetic capabilities and unique pigment compositions. Red algae are distinguished by their phycobilins and other accessory pigments that mask chlorophyll a, contributing to their coloration. While most thrive in marine environments, some adapt to freshwater habitats and survive at remarkable depths, utilizing phycobilins to absorb blue-green light. Variations in pigment concentration lead to a spectrum of colors in red algae, from deep black to greenish hues in shallow waters.

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PROTISTS & FUNGI

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  1. PROTISTS & FUNGI Lecture 2

  2. Single-Celled Stramenophiles

  3. Red Algae • Photosynthetic but with phycobilins & other accessory pigments that mask their chlorophyll a. • Nearly all live in marine, some in fresh water • Some survive at the greatest depths due to phycobilins; absorb blue-green light that penetrates the deep water • The more phycobilins, the redder it appears • Shallow-water ones appear green; have lesser phycobilins. • Deep dwellers are almost black • Not all red algae are red, some are green, purple/black

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