Send to

Choose Destination
Trends Plant Sci. 2008 Oct;13(10):522-5. doi: 10.1016/j.tplants.2008.07.003. Epub 2008 Sep 1.

When is a peroxisome not a peroxisome?

Author information

Australian Research Council Centre of Excellence in Plant Energy Biology and Centre of Excellence for Plant Metabolomics, University of Western Australia, Crawley, Western Australia 6009, Australia.


It is time to drop the glyoxysome name. Recent functional genomics analysis together with cell biology studies emphasize the unifying features of peroxisomes rather than their differences. Plant peroxisomes contain 300 or more proteins, the functions of which are dominated by activities related to fatty acid oxidation (>70 enzymes). By comparison, relatively few proteins are committed to metabolism of reactive oxygen species ( approximately 20) and to photorespiration ( approximately 10). Analysis of triglyceride metabolism in Arabidopsis seedlings now indicates that only two enzymes (isocitrate lyase and malate synthase) potentially distinguish glyoxysomes from other peroxisomes. Future research is best served by focusing on the common features of peroxisomes to establish how these dynamic organelles contribute to energy metabolism, development and responses to environmental challenges.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center