2005
DOI: 10.1016/j.envpol.2005.01.037
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Compensation processes of Aleppo pine ( Pinus halepensis Mill.) to ozone exposure and drought stress

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Cited by 47 publications
(17 citation statements)
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“…The Δ decreases observed in O 3 -treated needles have been detected before (Matyssek et al 1992;Saurer et al 1995;Gimeno et al 1999;Grams et al 2007) and have been interpreted in accordance with the theory of Farquhar et al (1982) as evidence that exposure to O 3 enhances the relative stomatal limitation of photosynthesis, thereby decreasing time-integrated c i /c a and increasing water use efficiency (WUE, A/E; Saurer et al 1991;Gimeno et al 1999). In this sense, O 3 -treated needles showed reductions in the calculated c i /c a However, gas exchange parameters measured in the present experiment (Inclán et al 2005) showed only slight WUE reductions, which indicated an increase in c i /c a . The calculated c i /c a values do not correspond with the measured values and the model proposed in Eq.…”
Section: Discussionsupporting
confidence: 84%
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“…The Δ decreases observed in O 3 -treated needles have been detected before (Matyssek et al 1992;Saurer et al 1995;Gimeno et al 1999;Grams et al 2007) and have been interpreted in accordance with the theory of Farquhar et al (1982) as evidence that exposure to O 3 enhances the relative stomatal limitation of photosynthesis, thereby decreasing time-integrated c i /c a and increasing water use efficiency (WUE, A/E; Saurer et al 1991;Gimeno et al 1999). In this sense, O 3 -treated needles showed reductions in the calculated c i /c a However, gas exchange parameters measured in the present experiment (Inclán et al 2005) showed only slight WUE reductions, which indicated an increase in c i /c a . The calculated c i /c a values do not correspond with the measured values and the model proposed in Eq.…”
Section: Discussionsupporting
confidence: 84%
“…The environmental conditions in the Mediterranean basin reduce stomatal conductance at the time of the highest O 3 levels and promote sclerophylly, volatile organic compounds emission, content, and activity of antioxidants. The pioneer Aleppo pine, which behaves as a drought-avoiding species, have xeromorphic adaptations, low gas exchange rates (Inclán et al 1998(Inclán et al , 2005, and their constitutional and induced ability to tolerate oxidative stress by an active antioxidant pool (Alonso et al 2003). These tolerance and avoidance mechanisms may be of greater importance for Mediterranean vegetation than for vegetation from other biomes.…”
Section: Discussionmentioning
confidence: 98%
“…For example, a decrease of soil organic matter or clay formation can reduce the CEC and thus the ecosystem's capacity to prevent nutrient losses through leaching during the torrential rainfalls frequent in Mediterranean areas If plants reduce their transpiration rates in response to drought, the amount of those nutrients such as Ca and Mg that depend mainly on mass flow, should decrease. Thus, drought can cause nutrient unbalances in plant by affecting asymmetrically the uptake of different nutrients (Dambrine et al 1992;Yavitt et al 2004;Inclan et al 2005;Hu and Schmidhalter 2005). On the other hand, drought can generate asymmetrical changes among different plant tissues by changing internal remobilization patterns (Wang et al 2005).…”
Section: Introductionmentioning
confidence: 97%
“…The nutrient content of aboveground biomass, mainly in leaves, tends to decrease with drought (Sardans et al 2008a;b), with the exception of K that increases in some aboveground tissues of some plant species (Sardans and Peñuelas 2007a;Sardans et al 2008g). Drought increases the C:N and C:P ratios of Mediterranean shrubs and trees, associated with a protective and conservative mechanism (Inclan et al 2005;Sardans et al 2008b, c, d;Matías et al 2011) and with sclerophylly and increases in lignin content (Bussotti et al 2000;Sardans et al 2006a). Drought enhances the allocation of N to the root system, which increases the capacity to absorb water (Sardans et al 2008a;.…”
Section: Droughtmentioning
confidence: 99%