Oxford University Press, Plant Physiology, 3(137), p. 835-840, 2005
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We provide evidence that the peroxisomal ATP- binding cassette (ABC) transporter COMATOSE (CTS) is involved in the biosynthesis of jasmonic acid (JA) in Arabidopsis (Arabidopsis thaliana) leaves. Basal JA levels were greatly reduced but not completely abol- ished in two cts mutant alleles, and JA production in response to wounding showed slower kinetics and reached a lower level than wild type. We propose the operation of two parallel pathways for peroxisomal import of jasmonate precursors, a route that requires CTS function and a parallel leak pathway involving anion trapping. It is well established that the bioactive, lipid-derived