Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Aaron L. IversonLouis R. IversonSteve Eshita
    Date: 2001
    Source: Ohio Journal of Science. 5: 90-94.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: View PDF  (173.23 KB)

    Description

    We tested the role of salicylic acid (SA) and jasmonic acid (JA) in altering the tomato plant's defense against herbivory by tobacco hornworm. Treatments of SA or JA were topically applied to tomato plants, hornworm consumption was allowed to proceed for 12 days, and harvest analyses were performed Measurements taken included a subjective plant rating (1-10 score), plant dry mass, caterpillar mass, and the number of times the caterpillars fell off the plant. Results showed significant effects of exogenously applied SA and JA on the defense of tomato plants against insect herbivory. Plants treated with SA had little resistance to the feeding caterpillars and the plant lost more biomass to them. JA, in contrast, apparently increased the defensive mechanisms of the plant, resulting in lower caterpillar growth and increased caterpillar detachment from plants. The data are consistent with a model where JA, endogenous or exogenously applied, is necessary for defense against insect herbivory and SA disrupts JA biosynthesis and/or pool accumulation.

    Publication Notes

    • Check the Northern Research Station web site to request a printed copy of this publication.
    • Our on-line publications are scanned and captured using Adobe Acrobat.
    • During the capture process some typographical errors may occur.
    • Please contact Sharon Hobrla, shobrla@fs.fed.us if you notice any errors which make this publication unusable.
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Iverson, Aaron L.; Iverson, Louis R.; Eshita, Steve. 2001. The effects of surface-applied jasmonic and salicylic acids on caterpillar growth and damage to tomato plants. Ohio Journal of Science. 5: 90-94.

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/11554