Skip to Main Content
Monoterpene persistence in the sapwood and heartwood of longleaf pine stumps: assessment of differences in composition and stability under field conditionsAuthor(s): Thomas L. Eberhardt; Philip M. Sheridan; Jolie M. Mahfouz
Source: Canadian Journal of Forest Research. 39:1357-1365.
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
View PDF (105.99 KB)
DescriptionMonoterpenes in exudates, phloem and sapwood have received considerable attention relative to the active defenses of pine trees. However, little is known about the composition and function of the heartwood monoterpenes. To address this deficiency, monoterpene contents and relative compositions were determined for sapwood and heartwood samples from longleaf pine (Pinus palustris Mill.) stumps monitored in the field for a one-year period post-harvest. Gas chromatography – mass spectrometry analysis of sapwood and heartwood sample extracts showed the total monoterpene contents for both declined at essentially the same rate. For sapwood, a-pinene continued to comprise about 75% of all compounds detected, while the proportion of b-pinene declined with time (15% to 7%). For the heartwood, lower proportions of both a- and b-pinenes (64 and 10%, respectively) were offset by higher proportions of other monoterpenes (e.g., limonene, a-terpineol, borneol). The low proportion of b-pinene in very old turpentine and lightwood stump samples further suggested the lower stability of this particular monoterpene. While it has not been specifically demonstrated that the monoterpenes have an active role in the decay resistance of longleaf pine stump heartwood, these compounds do persist for a very long time and thus are available should they serve this function.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- 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.
CitationEberhardt, Thomas L.; Sheridan, Philip M.; Mahfouz, Jolie M. 2009. Monoterpene persistence in the sapwood and heartwood of longleaf pine stumps: assessment of differences in composition and stability under field conditions. Canadian Journal of Forest Research. 39:1357-1365.
- Old resinous turpentine stumps as an indicator of the range of longleaf pine in Southeastern Virginia
- Longleaf pine inner bark and outer bark thicknesses: Measurement and relevance
- Measuring moisture dynamics to predict fire severity in longleaf pine forests.
XML: View XML