Acta Physiologiae Plantarum

, 31:207

Drought, warming and soil fertilization effects on leaf volatile terpene concentrations in Pinus halepensis and Quercus ilex

  • Josep-Salvador Blanch
  • Josep Peñuelas
  • Jordi Sardans
  • Joan Llusià
Original Paper

DOI: 10.1007/s11738-008-0221-z

Cite this article as:
Blanch, J., Peñuelas, J., Sardans, J. et al. Acta Physiol Plant (2009) 31: 207. doi:10.1007/s11738-008-0221-z

Abstract

The changes in foliar concentrations of volatile terpenes in response to water stress, fertilization and temperature were analyzed in Pinus halepensis and Quercus ilex. The most abundant terpenes found in both species were α-pinene and Δ3-carene. β-Pinene and myrcene were also abundant in both species. P. halepensis concentrations were much greater than those of Q. ilex in agreement with the lack of storage in the latter species (15205.60 ± 1140.04 vs. 0.54 ± 0.08 μg g−1 [d.m.]). The drought treatment (reduction to 1/3 of full watering) significantly increased the total terpene concentrations in both species (54% in P. halepensis and 119% in Q. ilex). The fertilization treatment (addition of either 250 kg N ha−1 or 250 kg P ha−1 or both) had no significant effects on terpene foliar concentrations. The terpene concentrations increased from 0.25 μg g−1 [d.m.] at 30°C to 0.70 μg g−1 [d.m.] at 40°C in Q. ilex (the non-storing species) and from 2,240 μg g−1 [d.m.] at 30°C to 15,621 μg g−1 [d.m.] at 40°C in P. halepensis (the storing species). Both species presented negative relationship between terpene concentrations and relative water contents (RWC). The results of this study show that higher terpene concentrations can be expected in the warmer and drier conditions predicted for the next decades in the Mediterranean region.

Keywords

FertilizationPinus halepensisQuercus ilexTemperatureTerpene concentrationWater stress

Copyright information

© Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Kraków 2008

Authors and Affiliations

  • Josep-Salvador Blanch
    • 1
  • Josep Peñuelas
    • 1
  • Jordi Sardans
    • 1
  • Joan Llusià
    • 1
  1. 1.Ecophysiology and Global Change Unit CREAF-CEAB-CSIC, CREAF (Center for Ecological Research and Forestry Applications), Edifici CUniversitat Autònoma de BarcelonaBellaterra, CataloniaSpain