lecture25F06

lecture25F06 - Photosynthetic pathways and the environment...

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Unformatted text preview: Photosynthetic pathways and the environment By the end of this lecture you should be able to Describe the initial steps of carbon fixation, including the contrasting carboxlase and oxygenase function of RUBISCO. Concepts and terms : Calvin cycle, photorespiration Describe the three different photosynthetic pathways. Concepts and terms : C 3 , C 4 , CAM, bundles sheath cell, malate, Kranz anatomy. Describe how these different photosynthetic pathways respond to key environmental variables. Discuss the relationship between the different photosynthetic pathways and geographic distribution. Assigned reading: Concept 10.4 in the text. Reference: Chapter 15: Photosynthesis, In: Terrestrial Plant Ecology, 3 rd ed. , Barbour et al. The inhibition of photosynthesis by O 2 was first noticed by the German physiologist, Otto Warburg, in 1920. Thus, it was coined the "Warburg effect". Pho to resp ira tion resu lts from the oxygena t ion reac t ion ca ta lyzed by r ibu lose-b isphospha...
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lecture25F06 - Photosynthetic pathways and the environment...

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