In the present paper, we review the toxicity of sugar- and lipid-derived RCs (reactive carbonyls) and the RC-scavenging systems observed in photosynthetic organisms. Similar to heterotrophs, photosynthetic organisms are exposed to the danger of RCs produced in sugar metabolism during both respiration and photosynthesis. RCs such as methylglyoxal and acrolein have toxic effects on the photosynthetic activity of higher plants and cyanobacteria. These toxic effects are assumed to occur uniquely in photosynthetic organisms, suggesting that RC-scavenging systems are essential for their survival. The aldo–keto reductase and the glyoxalase systems mainly scavenge sugar-derived RCs in higher plants and cyanobacteria. 2-Alkenal reductase and alkenal/alkenone reductase catalyse the reduction of lipid-derived RCs in higher plants. In cyanobacteria, medium-chain dehydrogenases/reductases are the main scavengers of lipid-derived RCs.
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April 2014
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Conference Article|
March 20 2014
Why don't plants have diabetes? Systems for scavenging reactive carbonyls in photosynthetic organisms
Ginga Shimakawa;
Ginga Shimakawa
*Department of Biological and Environmental Sciences, Faculty of Agriculture, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
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Mayumi Suzuki;
Mayumi Suzuki
*Department of Biological and Environmental Sciences, Faculty of Agriculture, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
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Eriko Yamamoto;
Eriko Yamamoto
*Department of Biological and Environmental Sciences, Faculty of Agriculture, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
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Ryota Saito;
Ryota Saito
*Department of Biological and Environmental Sciences, Faculty of Agriculture, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
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Tatsuya Iwamoto;
Tatsuya Iwamoto
*Department of Biological and Environmental Sciences, Faculty of Agriculture, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
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Akiko Nishi;
Akiko Nishi
*Department of Biological and Environmental Sciences, Faculty of Agriculture, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
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Chikahiro Miyake
Chikahiro Miyake
1
*Department of Biological and Environmental Sciences, Faculty of Agriculture, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
†Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, 7 Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
1To whom correspondence should be addressed (emailcmiyake@hawk.kobe-u.ac.jp).
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Publisher: Portland Press Ltd
Received:
December 20 2013
Online ISSN: 1470-8752
Print ISSN: 0300-5127
© The Authors Journal compilation © 2014 Biochemical Society
2014
Biochem Soc Trans (2014) 42 (2): 543–547.
Article history
Received:
December 20 2013
Citation
Ginga Shimakawa, Mayumi Suzuki, Eriko Yamamoto, Ryota Saito, Tatsuya Iwamoto, Akiko Nishi, Chikahiro Miyake; Why don't plants have diabetes? Systems for scavenging reactive carbonyls in photosynthetic organisms. Biochem Soc Trans 1 April 2014; 42 (2): 543–547. doi: https://doi.org/10.1042/BST20130273
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