Journal Article

Function of Jasmonate in Response and Tolerance of <i>Arabidopsis</i> to Thrip Feeding

Hiroshi Abe, Jun Ohnishi, Mari Narusaka, Shigemi Seo, Yoshihiro Narusaka, Shinya Tsuda and Masatomo Kobayashi

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 49, issue 1, pages 68-80
Published in print January 2008 | ISSN: 0032-0781
Published online January 2008 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcm168
Function of Jasmonate in Response and Tolerance of Arabidopsis to Thrip Feeding

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  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

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We analyzed the interaction between Arabidopsis and western flower thrips (Frankliniella occidentalis), which are one of the most serious insect pests of cultivated plants. We focused on the function of the immunity-related plant hormones jasmonate (JA), ethylene (ET) and salicylic acid (SA) in the plant's response to thrip feeding. Expression of the marker genes for each hormone response was induced by thrip feeding in wild-type (WT) plants. Further analyses in the hormone-related mutants coi1-1 (JA insensitive), ein2-1 and ein3-1 (ET insensitive) and eds16-1 (SA deficient) suggested the importance of these hormones in the plant response to feeding. Comparative transcriptome analyses suggested a strong relationship between thrip feeding and JA treatment, but not ET or SA treatment. The JA content of WT plants was significantly increased after thrip feeding. Moreover, coi1-1, but not ein2-1, showed lower feeding tolerance against thrips than the WT. Application of JA to WT plants before thrip feeding enhanced the plants’ feeding tolerance. JA modulates several defense responses in cooperation with ET, but application of the ET precursor 1-aminocyclopropane-carboxylic acid had a marked negative effect on feeding tolerance. Our results indicate that JA plays an important role in Arabidopsis in terms of response to, and tolerance against, thrip feeding.

Keywords: Arabidopsis thaliana — Ethylene — Frankliniella occidentalis — Insect feeding — Jasmonate — Western flower thrips

Journal Article.  7072 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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