Wound-induced green leaf volatiles cause the release of acetylated derivatives and a terpenoid in maize

Phytochemistry. 2006 Jan;67(1):34-42. doi: 10.1016/j.phytochem.2005.10.005. Epub 2005 Nov 28.

Abstract

Green leaf volatiles (GLVs), generally occurring C6 alcohols, aldehydes and acetates from plants, play an important role in plant-plant communication. These compounds induce intact plants to produce jasmonic acid, and induce defense-related gene expression and the release of volatile compounds. Here, we address wound-induced GLVs cause the release of acetylated derivatives and a terpenoid, (E)-4,8-dimethylnona-1,3,7-triene (DMNT) in intact maize, which may be a type of plant-plant interaction mediated by airborne GLVs. Upon exposure of intact maize seedlings to wound-induced GLVs, (Z)-3-hexenyl acetate was consistently the most abundant compound released. Exogenous application of individual alcohols and aldehydes mostly resulted in the release of corresponding acetate esters. C6-alcohols with a double bond between the second and third, or the third and fourth carbon atoms, C5- or C6-aldehydes, and (Z)-3-hexenyl acetate triggered the release of DMNT. When (Z)-3-hexenyl acetate and hexyl acetate were used to treat maize seedlings, they were recovered from the plants. These data demonstrated that: (1) apart from direct adsorption and re-release of acetate esters, absorption and conversion of exogenous alcohols and aldehydes into acetate esters occurred, and (2) DMNT was induced by a range of aldehydes and unsaturated alcohols.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetates / chemistry*
  • Acetates / metabolism
  • Alcohols / chemistry
  • Alcohols / metabolism
  • Aldehydes / chemistry
  • Aldehydes / metabolism
  • Alkenes / chemistry
  • Alkenes / metabolism
  • Plant Leaves / chemistry*
  • Plant Leaves / physiology
  • Terpenes / chemistry*
  • Terpenes / metabolism
  • Time Factors
  • Volatilization
  • Zea mays / chemistry*
  • Zea mays / metabolism*

Substances

  • 4,8-dimethyl-1,3,7-nonatriene
  • Acetates
  • Alcohols
  • Aldehydes
  • Alkenes
  • Terpenes