Coronatine and salicylic acid:: the battle between Arabidopsis and Pseudomonas for phytohormone control

被引：65

作者：

Block, A

Schmelz, E

Jones, JB

Klee, HJ

机构：

[1] Univ Florida, Dept Hort Sci, Plant Mol & Cellular Biol Program, Gainesville, FL 32611 USA

[2] Ctr Med Agr & Vet Entomol, USDA ARS, Gainesville, FL 32608 USA

[3] Univ Florida, Dept Plant Pathol, Gainesville, FL 32611 USA

来源：

MOLECULAR PLANT PATHOLOGY | 2005年 / 6卷 / 01期

关键词：

D O I：

10.1111/j.1364-3703.2004.00265.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

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 sid22 to determine if coronatine acts directly as a virulence factor or indirectly by SA suppression. Using coronatine-deficient Pstmutants 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.

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收藏

页码：79 / 83

页数：5

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