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

Blanch J.-S., Peñuelas J., Sardans J., Llusià J. (2009) Drought, warming and soil fertilization effects on leaf volatile terpene concentrations in Pinus halepensis and Quercus ilex. Acta Physiologiae Plantarum. 31: 207-218.
Enlace
Doi: 10.1007/s11738-008-0221-z

Resumen:

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

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Climate change and drought: a threat for Mediterranean ecosystem.

Sardans J, Peñuelas J, Ogaya R (2009) Climate change and drought: a threat for Mediterranean ecosystem. UAB DIVULGA 2009/02.

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Peñuelas J, Sardans J (2009) Elemental factors and ecology. UAB DIVULGA 2009/9

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Peñuelas J, Sardans J, Llusià J, Owen SM, Carnicer J, Giambelluca TW, Rezende EL, Mashuri Waite, Niinemets Ü (2009) Faster returns on ‘leaf economics’ and different biogeochemical niche in invasive compared with native plant species. Global Change Biology doi: 10.1111/j.1365-2486.2009.02054.x.

Increased eutrophication and nutrient imbalances in the agricultural soils of NE Catalonia (Spain) during the last four decades.

Peñuelas J, Sardans J, Alcañiz JM, Poch JM (2009) Increased eutrophication and nutrient imbalances in the agricultural soils of NE Catalonia (Spain) during the last four decades. Journal of Environmental Biology 30: 841-846.

Ecological metabolomics

Peñuelas J., Sardans J. (2009) Ecological metabolomics. Chemistry and Ecology. 25: 305-309.
Enlace
Doi: 10.1080/02757540903062517

Resumen:

[No abstract available]

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