Bis2C.Lecture.Dec1

Bis2C.Lecture.Dec1 - Host-Microbe Interactions Bis2C...

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Unformatted text preview: Host-Microbe Interactions Bis2C December 1, 2008 Outline Reintroduction to symbioses Sap Feeding Insects I: Phloem Sap Feeding Insects II: Xylem Symbioses Definition of symbiosis Intimate association between at least two different organisms in which at least one of them benefits Classes of symbiosis Organism + Commensalism- + Parasitism + + Mutualism B A Examples of mutualisms discussed in class Eukaryotic organelles (plastids and mitochondria) Secondary symbioses (eukaryote with another eukaryote) Lichens (fungi and photosynthetic microbe) Coral & dinoflagellates (zooxanthellae) Ant - fungus farming Pogonophoran worms and chemosynthetic bacteria Legumes and N 2 fixing bacteria Herbivores and cellulolytic gut microbes What do these mutualisms have in common? Examples of mutualisms discussed in class Eukaryotic organelles (plastids and mitochondria) Secondary symbioses (eukaryote with another eukaryote) Lichens (fungi and photosynthetic microbe) Coral & dinoflagellates (zooxanthellae) Ant - fungus farming Pogonophoran worms and chemosynthetic bacteria Legumes and N 2 fixing bacteria Herbivores and cellulolytic gut microbes Nutrition in Plants Plant nutrition Nutrient requirements for most plants? Plant nutrition Nutrient requirements for most plants CO 2 Macronutrients: (e.g., N, P, K) Micronutrients: (e.g., Fe, Cl, Mn) This type of nutrition is called? Nutrition in Animals Animal nutrition Nutrient requirements for most animals? Animal nutrition...
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Bis2C.Lecture.Dec1 - Host-Microbe Interactions Bis2C...

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