Abstract:
:SUMMARY The phytotoxin coronatine is a jasmonate mimic produced by Pseudomonas syringae pv. tomato (Pst). Coronatine acts as a virulence factor in Arabidopsis and mutants insensitive to coronatine are resistant to Pst and have higher levels of salicylic acid (SA). In this work we used the SA-deficient lines NahG and sid2-2 to determine if coronatine acts directly as a virulence factor or indirectly by SA suppression. Using coronatine-deficient Pst mutants we demonstrated that the lack of coronatine compromises Pst virulence in both wild-type and SA-deficient Arabidopsis. Thus, the action of coronatine is not due to SA suppression. Rather, SA-independent jasmonate-responses are the most likely mechanism for its action.
journal_name
Mol Plant Patholjournal_title
Molecular plant pathologyauthors
Block A,Schmelz E,Jones JB,Klee HJdoi
10.1111/j.1364-3703.2004.00265.xsubject
Has Abstractpub_date
2005-01-01 00:00:00pages
79-83issue
1eissn
1464-6722issn
1364-3703pii
MPP265journal_volume
6pub_type
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