Peroxisomes are eukaryotic organelles with crucial functions in development. Plant peroxisomes participate in various metabolic processes, some of which are co-operated by peroxisomes and other organelles, such as mitochondria and chloroplasts. Defining the complete picture of how these essential organelles divide and proliferate will be instrumental in understanding how the dynamics of peroxisome abundance contribute to changes in plant physiology and development. Research in Arabidopsis thaliana has identified several evolutionarily conserved major components of the peroxisome division machinery, including five isoforms of PEROXIN11 proteins (PEX11), two dynamin-related proteins (DRP3A and DRP3B) and two FISSION1 proteins (FIS1A/BIGYIN and FIS1B). Recent studies in our laboratory have also begun to uncover plant-specific factors. DRP5B is a dual-localized protein that is involved in the division of both chloroplasts and peroxisomes, representing an invention of the plant/algal lineage in organelle division. In addition, PMD1 (peroxisomal and mitochondrial division 1) is a plant-specific protein tail anchored to the outer surface of peroxisomes and mitochondria, mediating the division and/or positioning of these organelles. Lastly, light induces peroxisome proliferation in dark-grown Arabidopsis seedlings, at least in part, through activating the PEX11b gene. The far-red light receptor phyA (phytochrome A) and the transcription factor HYH (HY5 homologue) are key components in this signalling pathway. In summary, pathways for the division and proliferation of plant peroxisomes are composed of conserved and plant-specific factors. The sharing of division proteins by peroxisomes, mitochondria and chloroplasts is also suggesting possible co-ordination in the division of these metabolically associated plant organelles.
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Conference Article|
May 24 2010
Peroxisome division and proliferation in plants
Kyaw Aung;
Kyaw Aung
*MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI 48824, U.S.A.
†Plant Biology Department, Michigan State University, East Lansing, MI 48824, U.S.A.
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Xinchun Zhang;
Xinchun Zhang
*MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI 48824, U.S.A.
‡Genetics Graduate Program, Michigan State University, East Lansing, MI 48824, U.S.A.
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Jianping Hu
Jianping Hu
1
*MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI 48824, U.S.A.
†Plant Biology Department, Michigan State University, East Lansing, MI 48824, U.S.A.
‡Genetics Graduate Program, Michigan State University, East Lansing, MI 48824, U.S.A.
1To whom correspondence should be addressed (email huji@msu.edu).
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Publisher: Portland Press Ltd
Received:
December 15 2009
Online ISSN: 1470-8752
Print ISSN: 0300-5127
© The Authors Journal compilation © 2010 Biochemical Society
2010
Biochem Soc Trans (2010) 38 (3): 817–822.
Article history
Received:
December 15 2009
Citation
Kyaw Aung, Xinchun Zhang, Jianping Hu; Peroxisome division and proliferation in plants. Biochem Soc Trans 1 June 2010; 38 (3): 817–822. doi: https://doi.org/10.1042/BST0380817
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