Different expression profiles of jasmonic acid and salicylic acid inducible genes in the tomato plant against herbivores with various feeding modes

• Published in: Arthropod-plant interactions Vol. 6; no. 2; pp. 221 - 230
• Main Authors: Kawazu, Kei, Mochizuki, Atsushi, Sato, Yukie, Sugeno, Wataru, Murata, Mika, Seo, Shigemi, Mitsuhara, Ichiro
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.06.2012; Springer Nature B.V
• Subjects: Accumulation; Acids; Arabidopsis; Behavioral Sciences; Biomedical and Life Sciences; Ecology; Entomology; Feeders; Feeding; Feeding behavior; Frankliniella occidentalis; Gene expression; Genes; Herbivores; ingestion; Insects; Invertebrates; Jasmonic acid; Larvae; Leaves; Life Sciences; Liriomyza sativae; Mites; Original Paper; Oviposition; Pin2 gene; Plant Pathology; Plant Sciences; Plant tissues; Salicylic acid; Signal transduction; Solanum lycopersicum; Spodoptera exigua; Spodoptera litura; Tetranychus urticae; tissues; Tomatoes; Transcription activation; Thrips; Leaf miner fly; Spider mite; cv. Micro-Tom; Lepidopteran insect
• ISSN: 1872-8855; 1872-8847
• DOI: 10.1007/s11829-011-9174-z

We compared the expression profiles of jasmonic acid (JA)-inducible genes (Pin2 and LapA1) and salicylic acid (SA)-inducible genes (PRb-1b and GluB) in the tomato (Solanum lycopersicum cv. Micro-Tom) against herbivores using differing feeding modes: the leaf-chewing larvae of the insects Spodoptera litura and S. exigua; the western flower thrips (Frankliniella occidentalis) and the two-spotted spider mite (Tetranychus urticae) as cell-content feeders; and the leaf miner fly (Liriomyza sativae). Feeding by larvae of both S. litura and S. exigua chiefly activated JA-inducible genes, similar to the response to wound stimuli. Feeding by the thrips F. occidentalis also activated JA-inducible genes, as previously reported in Arabidopsis. Feeding by the spider mite T. urticae activated a JA-inducible LapA1 gene but did not activate a JA-inducible Pin2 gene and additionally activated SA-inducible genes, which were accompanied by the accumulation of SA. This may be a strain that represses induction of the JA signaling pathway. One day after oviposition by the leaf miner fly, L. sativae, JA-inducible genes were activated. However, after the L. sativae larvae hatched and began eating within the leaf tissues, JA-inducible gene expression decreased and SA-inducible gene expression increased. Activation of SA-inducible genes (PRb-1b and GluB) by L. sativae larval feeding seems to suppress JA-mediated plant defense but appears to be unrelated to SA accumulation.