Mutualism09

Mutualism09 - Very important in water uptake, drought...

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BSCI 106 Outline 9 Fall 2009 p. 1 Dr. Sara Via Lecture 9 Species interactions IV - Mutualism A. In a mutualism (same as symbiosis) both participating species benefit (+/+) 1. Nitrogen fixation by Rhizobium (bacteria) Bacteria take N2 from air ammonium 2. Mycorrhizae (fungi) on plant roots Mycorrhizae are fungi that infect plant roots Aid in water, nutrient uptake Inside (endomycorrhizae) Aid in P uptake by extending way past root hairs Outside (Ectomycorrhizae)
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Unformatted text preview: Very important in water uptake, drought resistance 3. Pollination required by many plants flowers evolved to attract pollinators! BSCI 106 Outline 9 Fall 2009 p. 2 Dr. Sara Via 4. Corals and Zooxanthellae Q: Why do coral need the zooxanthellae? Other marine invertebrates dont use them Zooxanthellae (algae) - Fix carbon Coral - Acquire nitrogen Corals are victims of global warming: In warming water, zoothanthellae leave Coral Bleaching- corals die...
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This note was uploaded on 10/05/2009 for the course BSCI 106 taught by Professor Porter during the Fall '08 term at Maryland.

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Mutualism09 - Very important in water uptake, drought...

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