Reactions of Norway spruce and beech trees to 2 years of ozone exposure and episodic drought

Dixon, Martin; Thiec, Didier Le; Garrec, Jean-Pierre

doi:10.1016/s0098-8472(98)00023-9

Cited by 35 publications

(21 citation statements)

References 18 publications

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“…This water stress-induced reduction in net photosynthetic rate could result in the reduction of dry weight growth of B. ermanii. Our results agreed well with those of Beyers et al (1992) and Dixon et al (1998).…”

Section: Effects Of Soil Water Stresssupporting

confidence: 91%

“…Similar results have been reported in other grass and tree species Izuta, Takahashi, Matsumura, & Totsuka, 1999). The reduction in NAR by O 3 has been reported as mainly caused by the inhibition of photosynthesis (Dixon et al, 1998;Greitner, Pell, & Winner, 1994;Reich, 1983). The net photosynthetic rate in the present study decreased more remarkably in the response to O 3 than the reduction in NAR (Figures 2 and 3), which suggested that the photosynthetic damage was gradually accumulated in leaves during O 3 exposure for 123 days.…”

Section: Effects Of Ozone Stresssupporting

confidence: 58%

“…It has been widely reported that O 3 retards the growth of some sensitive tree species in the field and in laboratory exposures (Bortier, Ceulemans, & De Temmerman, 2000;Dixon et al, 1998;Matsumura, 2001;Panek, Kurpius, & Goldstein, 2002;Pye, 1988;Shimizu, Fujinuma, Kubota, Totsuka, & Omasa, 1993;Van Leeuwen et al, 2000). In the present study, the dry weight growth of B. ermanii was significantly reduced by O 3 exposure ( Figure 1, Table I).…”

Section: Effects Of Ozone Stressmentioning

confidence: 99%

“…There has been much interest in the relative magnitudes and interactive effects of these two stresses (Gorissen, Joosten, Smeulders, & Van Veen, 1994;Matyssek et al, 2006;Pääkkönen, Vahala, Pohjola, Holopainen, & Kärenlampi, 1998), while previous research results were inconsistent. Dixon, Thiec, and Garrec (1998) showed that a drought relieved the effects of O 3 on beech (Fagus sylvatica L.), but not on Norway spruce (Picea abies (L.) H. Karst.).…”

mentioning

confidence: 99%

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Ozone and/or Water Stresses Could have Influenced the Betula ermanii Cham. Forest Decline Observed at Oku-Nikko, Japan

Shimizu

Feng

2006

Environ Monit Assess

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A serious forest decline of Betula ermanii Cham. has been observed at Mt. Mae-Shirane, Oku-Nikko, Japan, where high ozone (O3) concentration and severe water deficiency have been measured. In order to consider the possibility whether O3 and/or water stresses could have been the causes of the forest decline of B. ermanii, plant growth experiments were conducted in environment-controlled growth cabinets. Two-year-old seedlings of B. ermanii were exposed to either charcoal-filtered air (O3 concentration <5 ppb) or 50 ppb O3 (daily average, ranging between 20-100 ppb) for 123 days at 20.0/12.5 +/- 1.0 degrees C (day/night) and 70/80 +/- 7% relative humidity (day/night). Simultaneously, seedlings were treated with three watering regime: 1.0 < pF < 1.8 (no water stress), 1.8 < pF < 2.5 (mild water stress) or 2.5 < pF < 3.0 (severe water stress). O3 exposure significantly reduced the dry weights of leaf, root and the whole plant, while water stress significantly reduced the dry weights of each organ and the whole plant. Significant reductions of net photosynthesis, transpiration and stomatal conductance were also observed under O3 and/or water deficiency treatments, while contents of RuBP carboxylase/oxygenase (Rubisco), chlorophyll( a+b ) and some essential nutrient elements (N, P, K, Mg and Ca) were not markedly changed. It was suggested that the decrease in net photosynthetic rate induced mainly by stomatal closure was the major cause of the growth reduction under O3 and/or water stresses. No significant interactions between O3 and water stresses were observed in terms of the depression of dry matter production, which suggested that simultaneous stress treatments of O3 exposure and water deficiency could affect the tree growth of B. ermanii additively.

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Section: Effects Of Soil Water Stresssupporting

confidence: 91%

Section: Effects Of Ozone Stresssupporting

confidence: 58%

Section: Effects Of Ozone Stressmentioning

confidence: 99%

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confidence: 99%

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Ozone and/or Water Stresses Could have Influenced the Betula ermanii Cham. Forest Decline Observed at Oku-Nikko, Japan

Shimizu

Feng

2006

Environ Monit Assess

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“…In fact, the protective effect of drought would only occur in severe drought conditions while under low water restriction the damage caused by O 3 appeared additive (Matyssek et al 2006;Pääkkönen et al 1998b). However, there are clear inter-and intraspecific differences in response to the combination of drought and O 3 (Dixon et al 1998). The protective effect of drought may be the result of stomatal exclusion of O 3 but also the induction of defence reactions (Matyssek et al 2006).…”

Section: Combination Of O 3 and Other Environmental Factorsmentioning

confidence: 99%

Deciphering the ozone-induced changes in cellular processes: a prerequisite for ozone risk assessment at the tree and forest levels

Jolivet

Bagard

Cabané

et al. 2016

Annals of Forest Science

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Abstract& Key message Ozone, one of the major atmospheric pollutants, alters tree growth, mainly by decreasing carbon assimilation and allocation to stems and roots. To date, the mechanisms of O 3 impact at the cellular level have been investigated mainly on young trees grown in controlled or semi-controlled conditions. In the context of climate change, it is necessary to introduce a valuable defence parameter in the models that currently predict O 3 impact on mature trees and the carbon sequestration capacity of forest ecosystems.

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Effects of prolonged drought on the anatomy of sun and shade needles in young Norway spruce trees

Gebauer

Volařík

Urban

et al. 2015

Ecology and Evolution

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Predicted increases in the frequency and duration of drought are expected to negatively affect tree vitality, but we know little about how water shortage will influence needle anatomy and thereby the trees’ photosynthetic and hydraulic capacity. In this study, we evaluated anatomical changes in sun and shade needles of 20‐year‐old Norway spruce trees exposed to artificial drought stress. Canopy position was found to be important for needle structure, as sun needles had significantly higher values than shade needles for all anatomical traits (i.e., cross‐sectional needle area, number of tracheids in needle, needle hydraulic conductivity, and tracheid lumen area), except proportion of xylem area per cross‐sectional needle area. In sun needles, drought reduced all trait values by 10–40%, whereas in shade needles, only tracheid maximum diameter was reduced by drought. Due to the relatively weaker response of shade needles than sun needles in drought‐stressed trees, the difference between the two needle types was reduced by 25% in the drought‐stressed trees compared to the control trees. The observed changes in needle anatomy provide new understanding of how Norway spruce adapts to drought stress and may improve predictions of how forests will respond to global climate change.

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Reactions of Norway spruce and beech trees to 2 years of ozone exposure and episodic drought

Cited by 35 publications

References 18 publications

Ozone and/or Water Stresses Could have Influenced the Betula ermanii Cham. Forest Decline Observed at Oku-Nikko, Japan

Ozone and/or Water Stresses Could have Influenced the Betula ermanii Cham. Forest Decline Observed at Oku-Nikko, Japan

Deciphering the ozone-induced changes in cellular processes: a prerequisite for ozone risk assessment at the tree and forest levels

Effects of prolonged drought on the anatomy of sun and shade needles in young Norway spruce trees

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