Ecological and evolutionary aspects of isoprene emission from plants

Peter C. Harley, Russell Monson, Manuel T. Lerdau

Research output: Contribution to journalArticle

156 Citations (Scopus)

Abstract

Isoprene (2-methyl-1,3,-butadiene), produced by many woody and a few herbaceous plant species, is the dominant volatile organic compound released from vegetation. It represents a non-trivial carbon loss to the plant (typically 0.5-2%, but much higher as temperatures exceed 30°C), and plays a major role in tropospheric chemistry of forested regions, contributing to ozone formation. This review summarizes current knowledge concerning the occurrence of isoprene production within the plant kingdom, and discusses other aspects of isoprene biology which may be of interest to the ecological community. The ability to produce significant amounts of isoprene may or may not be shared by members of the same plant family or genus, but emitting species have been found among bryophytes, ferns, conifers and Ephedra and in approximately one-third of the 122 angiosperm families examined. No phylogenetic pattern is obvious among the angiosperms, with the trait widely scattered and present (and absent) in both primitive and derived taxa, although confined largely to woody species. Isoprene is not stored within the leaf, and plays no known ecological role as, for example, an anti-herbivore or allelopathic agent. The primary short-term controls over isoprene production are light and temperature. Growth in high light stimulates isoprene production, and growth in cool conditions apparently inhibits isoprene, production of which may be induced upon transfer to warmer temperatures. The stimulation of isoprene production by high irradiance and warm temperatures suggests a possible role in ameliorating stresses associated with warm, high-light environments, a role consistent with physiological evidence indicating a role in thermal protection.

Original languageEnglish (US)
Pages (from-to)109-123
Number of pages15
JournalOecologia
Volume118
Issue number2
DOIs
StatePublished - Feb 1999
Externally publishedYes

Fingerprint

isoprene
angiosperm
Angiospermae
temperature
Ephedra
volatile organic compounds
herbaceous plants
bryophyte
fern
ferns and fern allies
ozone
herb
conifers
coniferous tree
volatile organic compound
irradiance
herbivore
chemistry
herbivores
phylogenetics

Keywords

  • Hydrocarbons
  • Isoprene
  • Volatile organic carbon

ASJC Scopus subject areas

  • Ecology

Cite this

Ecological and evolutionary aspects of isoprene emission from plants. / Harley, Peter C.; Monson, Russell; Lerdau, Manuel T.

In: Oecologia, Vol. 118, No. 2, 02.1999, p. 109-123.

Research output: Contribution to journalArticle

Harley, Peter C. ; Monson, Russell ; Lerdau, Manuel T. / Ecological and evolutionary aspects of isoprene emission from plants. In: Oecologia. 1999 ; Vol. 118, No. 2. pp. 109-123.
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