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Plant Photosynthesis Abstract Image - cg6p7224148c

Photosynthesis is the biological process that converts solar energy into chemical energy, providing the raw materials for growth, development, and reproduction of plants, algae, and photosynthetic bacteria. These diverse photoautotrophs are the major primary producers of organic matter and the ultimate source of food for nearly all life on Earth. My long-term research goals are to understand how photosynthetic energy conversion works, how it is regulated, and how it might be improved to help meet the world's needs for food and fuel.

AB - Photosynthesis is the primary source of energy for life on Earth. However, only three percent of the light energy that strikes a plant is actually stored as chemical fuel, due to the functional constraints on a plant. At present, scientists are investigating several approaches to developing artificial photosynthesis systems. In this article, some of the recent attempts at the development of photoelectrochemical cells that satisfy the natural constraints of the physical world, as well as the economic constraints of human society are reviewed.

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27th Western Photosynthesis Conference

Watch video · Artificial Photosynthesis Alan F. Heyduk, University of California, Irvine Abstract: Artificial photosynthesis is the buzz word used by scientists aiming…

My lab uses a wide array of experimental organisms and interdisciplinary approaches to investigate fundamental questions about assembly, regulation, and dynamics of photosynthesis. In particular, we have focused on a pair of model organisms that diverged from each other around the time that fungi diverged from animals: the unicellular green alga, Chlamydomonas reinhardtii, and the laboratory weed, Arabidopsis thaliana. By comparing how photosynthesis works in diverse organisms, we hope to uncover general design principles of natural photosynthesis as well as unique adaptations to different environments.

We have made major contributions to understanding the regulation of photosynthesis by identifying and characterizing mutants of both Chlamydomonas and Arabidopsis that are defective in nonphotochemical quenching (NPQ), which regulates light harvesting in nearly all photosynthetic eukaryotes (Figure 2). The mutant analysis helped to define the carotenoid pigments (zeaxanthin and lutein) that are involved in NPQ and showed that a photosystem II protein of previously unknown function, PsbS, is necessary for the main component of NPQ in Arabidopsis. We discovered that the stress-related antenna protein called LHCSR is essential for NPQ in the green alga Chlamydomonas, instead of PsbS. In collaboration with Graham Fleming (University of California, Berkeley [UC Berkeley] and Lawrence Berkeley National Laboratory [Berkeley Lab]) and Roberto Bassi (University of Verona), we are using reconstitution and ultrafast spectroscopy to elucidate the pigment architecture and underlying biophysical mechanism of NPQ in different organisms. We are also investigating the possibility of improving photosynthesis by altering NPQ.

First European Congress on Photosynthesis …

Dynamics of Photosynthetic Membranes and Protein Complexes
The light-dependent reactions of oxygenic photosynthesis in algae and plants are catalyzed by a series of membrane protein complexes in chloroplasts. Although high-resolution structures are now available for the major complexes, a thorough understanding of the dynamic processes of photosynthetic membrane biogenesis, regulation, and repair is lacking. To gain insight into how specific pigments, proteins, lipids, and cofactors are assembled into a functional photosynthetic membrane, my lab has isolated hundreds of new Chlamydomonas mutants that affect photosynthesis. We have found mutants affecting key reactions in chlorophyll biosynthesis and nearly every step of carotenoid biosynthesis, in addition to mutants that affect specific photosynthetic complexes. For example, mutants that are defective in photosystem II activity were identified by imaging of chlorophyll fluorescence based on their lack of variable fluorescence (Figure 3). Through genetic and biochemical analysis of these mutants, we are uncovering novel factors that are necessary for photosystem II assembly.

Plant Photosynthesis Abstract picture - part of our huge selection of professional quality pictures at very affordable prices - cg6p7224148c

However, once these leaves are put in a vacuum and all the oxygen and CO2 is gone, they still need CO2 to perform photosynthesis so they are put in a solution of bicarbonate so they can get CO2 from the environment.

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ICARP2014 - Artificial Photosynthesis


Effects of inoculation with plant growth …

N2 - Photosynthesis is the primary source of energy for life on Earth. However, only three percent of the light energy that strikes a plant is actually stored as chemical fuel, due to the functional constraints on a plant. At present, scientists are investigating several approaches to developing artificial photosynthesis systems. In this article, some of the recent attempts at the development of photoelectrochemical cells that satisfy the natural constraints of the physical world, as well as the economic constraints of human society are reviewed.

LabBench Activity Plant Pigments and Photosynthesis

Photosynthesis is the primary source of energy for life on Earth. However, only three percent of the light energy that strikes a plant is actually stored as chemical fuel, due to the functional constraints on a plant. At present, scientists are investigating several approaches to developing artificial photosynthesis systems. In this article, some of the recent attempts at the development of photoelectrochemical cells that satisfy the natural constraints of the physical world, as well as the economic constraints of human society are reviewed.

One Of Gen Con's Biggest Hits Was A Board Game …

The rate of photosynthesis actually seemed to be picking up around the 9th and 10th leaf, this could mean another experiment with more than 10 leaves should follow to see how much higher the rate will increase and when it will finally start declining.

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