CBP PP3 Photosynth

CBP PP3 Photosynth - CBP PP3 Photosynth

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LR/CC/CBP Compensation Point CO 2 uptake = CO 2 release CO 2 release is light dependent Increased [CO 2 ] increases CO 2 uptake L Compensation point lower Increased [O 2 ] inhibits CO 2 uptake L Compensation point higher
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LR/CC/CBP Compensation Points [CO 2 ] in ppm Maple tree 145 Tomato 75 Tobacco 60 Wheat 52 Maize 9 Sugar Cane 7
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LR/CC/CBP Compensation point Compensation point [CO 2 ] L product of two competing processes
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LR/CC/CBP Photorespiration CO 2 fixation inhibited by O 2 At high oxygen levels L Accumulation of 2C compounds L Release of CO 2 RUBISCO can bind Oxygen
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LR/CC/CBP Photorespiration RUBISCO binds O 2 Incorporation of 18 O into glycollate Glycollate removed by glyoxylate cycle in glyoxisomes Uses energy & destroys carbohydrate OH O O H H
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LR/CC/CBP
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LR/CC/CBP Photorespiration CO 2 fixation optimal at 1 – 2% O 2 Air has 21% O 2 , 0.036% CO 2 CO 2 enrichment increases yield of
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This note was uploaded on 07/04/2011 for the course BIO microbiolo taught by Professor Point during the Spring '09 term at HKU.

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CBP PP3 Photosynth - CBP PP3 Photosynth

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