Jasmonic Acid Levels Are Reduced in COMATOSE ATP-Binding Cassette Transporter Mutants. Implications for Transport of Jasmonate Precursors into Peroxisomes | Zendy

Frederica L. Theodoulou | Zendy; Kathleen Job | Zendy; Stephen P. Slocombe | Zendy; Steven Footitt | Zendy; Michael J. Holdsworth | Zendy; Alison Baker | Zendy; Tony R. Larson | Zendy; Ian A. Graham | Zendy

Open Access

Jasmonic Acid Levels Are Reduced in COMATOSE ATP-Binding Cassette Transporter Mutants. Implications for Transport of Jasmonate Precursors into Peroxisomes

Author(s) -

Frederica L. Theodoulou,

Kathleen Job,

Stephen P. Slocombe,

Steven Footitt,

Michael J. Holdsworth,

Alison Baker,

Tony R. Larson,

Ian A. Graham

Publication year - 2005

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.105.059352

Subject(s) - jasmonic acid , arabidopsis , peroxisome , arabidopsis thaliana , atp binding cassette transporter , jasmonate , mutant , transporter , biochemistry , biology , chemistry , microbiology and biotechnology , gene

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

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