Implications of foliar terpene content and hydration on leaf flammability of Quercus ilex and Pinus halepensis

Plant Biology
G A AlessioJ Llusià

Abstract

We investigated the implications of foliar hydration and terpene content on leaf flammability in two widely distributed forest species of the Mediterranean basin, Quercus ilex, which does not store terpenes, and Pinus halepensis, a terpene-storing species. The experiments were carried out in plants grown under different water regimes that generated a wide range of foliar hydration and terpene contents. We monitored the temperatures and time elapsed to reach the smoke, pyrolysis and flame phases. Smoke appeared much earlier (37 versus 101 s) and at lower temperatures (96 versus 139 degrees C) in Quercus ilex than in Pinus halepensis. Quercus ilex reached pyrolysis earlier than Pinus halepensis (278 versus 338 s) but at the same temperature (365-371 degrees C). There were no significant differences in time elapsed nor in temperature for flammability (386-422 s; 505-487 degrees C in both species). Quercus ilex had lower water hydration than Pinus halepensis (41 versus 100%) and the leaf content of terpenes in Quercus was three orders of magnitude lower. The results of this study show no differences in the flame phase between the two species and the absence of a significant relationship between temperature and elapsed time of the d...Continue Reading

References

Mar 29, 2003·Trends in Plant Science·Josep Peñuelas, Joan Llusià
Jun 15, 2006·Plant Biology·H RennenbergA Gessler
May 8, 2007·Ecological Applications : a Publication of the Ecological Society of America·Pere RieraMarc Estiarte
Jun 1, 1994·Journal of Chemical Ecology·C S White

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Citations

Jan 24, 2008·Plant Biology·Francesco LoretoJörg-Peter Schnitzler
Apr 3, 2014·Plant, Cell & Environment·Paolo CiccioliFrancesco Loreto
Dec 30, 2014·Environmental Management·Zorica KaufŽeljko Španjol
Nov 22, 2014·Frontiers in Plant Science·David M J S BowmanLynda D Prior
Jul 18, 2018·Frontiers in Plant Science·Gianni Della RoccaJavier Madrigal
Sep 19, 2015·Ecology and Evolution·Luke G BlauwJ Hans C Cornelissen
Aug 17, 2021·The Science of the Total Environment·Zorica PopovićArtemi Cerdà

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