Crassulacean Acid Metabolism - Photosynthesis - 7

-glycolysis, in which glucose is broken up into two subunits, called pyruvate, which creates two units of ATP per molecule of glucose. This happens in the cytoplasm, in both animal and plant cells.

Crassulacean acid metabolism - Wikipedia

Prove that Crassulacean acid metabolism plants give off more humidity at night then at day.

Crassulacean acid metabolism photosynthesis: …

-respiration, in which pyruvate is combined with oxygen to form carbon dioxide and water, which creates a lot of ATP per unit of pyruvate (16 I think). Obviously, glycolysis has to happen first, in order to make the pyruvate. This happens in the mitochondrion, which likewise exists in both animals and plants.

Crassulacean Acid Metabolism | ASU - Ask A Biologist

The acidity was found to arise from the opening of their stomata at night to take in CO2 and fix it into malic acid for storage in the large vacuoles of their photosynthetic cells. It could drop the pH to 4 with a malic acid concentration up to 0.3M . Then in the heat of the day, the stomata close tightly to conserve water and the malic acid is decarboxylated to release the CO2 for fixing by the Calvin cycle. PEP is used for the initial short-term carbon fixation as in the , but the entire chain of reactions occurs in the same cell rather than handing off to a separate cell as with the C4 plants. In the CAM strategy, the processes are separated temporally, the initial CO2 fixation at night, and the malic acid to Calvin cycle part taking place during the day.

T1 - Alterations in growth and crassulacean acid metabolism (CAM) activity of in vitro cultured cactus

Crassulacean acid metabolism - Biology-Online Dictionary

Our research aims to elucidate the molecular basis for the circadian regulation of a metabolic adaptation of photosynthesis called Crassulacean acid metabolism (CAM), which is found in plants that inhabit arid and semi-arid regions of the world. We are leading a large DNA sequencing project to decode the transcriptome and genome of a new model CAM species, Kalanchoe fedtschenkoi. We are combining the powers of the Roche 454 GS-FLX Titanium, Applied Biosystems SOLiD4 and Illumina GAii sequencing systems for this sequencing work. K. fedtschenkoi was selected for sequencing because it has the attributes required for an amenable model plant system. In particular, we have developed a simple stable transformation system that allows us to test gene function in planta. Our goal is to identify and characterise the CAMome, the genes required for efficient operation of CAM, including gaining a detailed understanding of which genes mediate the strict circadian control of CAM. To transition this work from model to crop, we are collaborating with Dr. Anne Borland (University of Newcastle), Prof. Andrew Smith (University of Oxford), Prof. Howard Griffiths (University of Cambridge), and Dr. Joe Holtum (James Cook University, Australia) to explore the potential of high-productivity CAM Agaves as new non-food biofuel feedstock crops that can grow on seasonally dry land. We are performing transcriptome sequencing on Agaves in order to identify molecular markers that are linked to high productivity and high sugar content. In a separate collaborative project with Dr. Colin Osborne, University of Sheffield, we are sequencing the C3 and C4 subspecies of the grass, Alloteropsis semialata in order to identify the genes required for C4 photosynthesis. This is the only grass known to possess C3 and C4 species with such a close relationship.

KW - CAM photosynthesis

Crassulacean acid metabolism - Newcastle University

The process of photosynthesis is two-part. First, there are the light reactions, where light is converted into chemical energy (a reduced electron carrier and ATP). This occurs in the thylakoids (stacked membranes) of the chloroplasts. The ATP and electron carriers are then used in a second set of reactions, called the light-independent reactions. This also occurs in the chloroplasts, but in an area called the stroma. In this case, carbon dioxide gets used to produce sugars in a series of reactions called the Calvin Cycle, C4 photosynthesis, and crassulacean acid metabolism. You can look in any basic bio textbook to see how much "energy" or "sugar" is produced in each step of the process.

Juan Beltran, P2, ‘Evolutionary origins and ecophysiology of CAM photosynthesis in the montane genus Puya (Bromeliaceae)’

Crassulacean acid metabolism: plastic, fantastic | …

The drawback to C4 photosynthesis is the extra energy in the form of that is used to pump the 4-carbon acids to the bundle sheath cell and the pumping of the 3-carbon compound back to the mesophyll cell for conversion to PEP. This loss to the system is why C3 plants will outperform C4 plants if there is a lot of water and sun. The C4 plants make some of that energy back in the fact that the rubisco is optimally used and the plant has to spend less energy synthesizing rubisco.

01/04/2002 · Crassulacean acid metabolism: plastic, fantastic ..

Crassulacean acid metabolism photosynthesis: ‘Working …

Sugarcane is a champion at photosynthesis under the right conditions and is a prime example of a C4 plant, one which uses C4 photosynthesis. Sugarcane has been recorded at 7% .