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Plant Cell Physiol. 2011 Jan;52(1):205-9. doi: 10.1093/pcp/pcq181. Epub 2010 Nov 19.

12-oxo-phytodienoic acid-glutathione conjugate is transported into the vacuole in Arabidopsis.

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1
Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan.

Abstract

While exogenous toxic compounds such as herbicides are thought to be sequestered into vacuoles in the form of glutathione (GSH) conjugates, little is understood about natural plant products conjugated with GSH. To identify natural products conjugated with GSH in plants, metabolites in the Arabidopsis γ-glutamyl transpeptidase (ggt) 4 knockout mutants that are blocked in the degradation of GSH conjugates in the vacuole were compared with those in wild-type plants. Among the metabolites identified, one was confirmed to be the 12-oxo-phytodienoic acid (OPDA)-GSH conjugate, indicating that OPDA, a precursor of jasmonic acid (JA), is transported into the vacuole as a GSH conjugate.

PMID:
21097476
DOI:
10.1093/pcp/pcq181
[Indexed for MEDLINE]
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