1994
DOI: 10.1139/b94-012
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Alteration of element contents in guard cells of Norway spruce (Picea abies) subjected to ozone fumigation and (or) water stress: X-ray microanalysis study

Abstract: L~, P. 1994. Alteration of element contents in guard cells of Norway spruce (Picea abies) subjected to ozone fumigation and (or) water stress: X-ray microanalysis study. Can. J. Bot. 72: [86][87][88][89][90][91][92]. Two clones of Norway spruce Picea abies (L.) Karst. (Gerardmer clone and Istebna clone) were subjected to an ozoneenriched atmosphere. The X-ray microanalysis of elements present in the guard cells showed a decrease in potassium for the Gerardmer clone along with a larger closing of guard cells a… Show more

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Cited by 12 publications
(9 citation statements)
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“…This was approximately 25% in plants grown with 15 mM Ca 2+ in the rhizosphere. Ozone and H 2 O 2 are known to have a marked eect on the Ca 2+ homeostasis and stomatal behaviour of plants (Castillo and Heath 1990;Fink 1991;Le Thiec et al 1994;Price et al 1994;McAinsh et al 1996;Clayton et al 1999;Pei et al 2000). Therefore, the reduction in stomatal conductance observed in L. hispidus in response to ozone may be due to the disruption of guard-cell Ca 2+ homeostasis, and hence Ca 2+ -mediated signal transduction, resulting from the potentially deleterious eects of ozone on the mechanism by which apoplastic Ca 2+ is regulated in this species.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…This was approximately 25% in plants grown with 15 mM Ca 2+ in the rhizosphere. Ozone and H 2 O 2 are known to have a marked eect on the Ca 2+ homeostasis and stomatal behaviour of plants (Castillo and Heath 1990;Fink 1991;Le Thiec et al 1994;Price et al 1994;McAinsh et al 1996;Clayton et al 1999;Pei et al 2000). Therefore, the reduction in stomatal conductance observed in L. hispidus in response to ozone may be due to the disruption of guard-cell Ca 2+ homeostasis, and hence Ca 2+ -mediated signal transduction, resulting from the potentially deleterious eects of ozone on the mechanism by which apoplastic Ca 2+ is regulated in this species.…”
Section: Resultsmentioning
confidence: 99%
“…Furthermore, exposure of Norway spruce to ozone has been found to induce a marked redistribution of calcium oxalate crystals from the apoplast into the vacuoles of epidermal cells and those of the stomatal complex (Fink 1991). In addition, the Ca 2+ content of guard cells has been shown to be higher in Norway spruce grown in an ozone-enriched atmosphere compared to those grown under ambient conditions and has been associated with a decrease in stomatal aperture (Le Thiec et al 1994). Ozone-induced changes in plant Ca 2+ homeostasis have important implications for Ca 2+ -mediated signal transduction in guard cells and the control of stomatal aperture, particularly in plants growing on Ca 2+ -rich soils.…”
Section: Introductionmentioning
confidence: 99%
“…Five c and five c + 1 needles were sampled from each seedling, and each needle was analyzed five times. The material to be analyzed was prepared according to the method used in Le Thiec et al [25]. Sections of plant material were examined under a scanning electron microscope (Stereoscan 90B, Cambridge) at 15 kV, equipped with a energy dispersive microanalysis system (EDX, diode Si-Li; Analyzer AN10000 10/25).…”
Section: Nutrient Contentsmentioning
confidence: 99%
“…Oxidative stresses have been shown indirectly to have the potential to influente Caz+ transport in plants (Castillo and Heath, 1990;Price, 1990;Fink, 1991;Le Thiec et al, 1994b). However, there is little direct evidence regarding their effect on the regulation of Ca2+ homeostasis (Price et al, 1994).…”
Section: Significance Of Oxidative Stress-lnduced Lncreases In Guard mentioning
confidence: 99%
“…This implies a substantial movement of Ca2+ through the cytoplasm of these cells. The total Ca2+ content of stomatal guard cells, determined by x-ray microanalysis, has also been shown to be higher in Norway spruce grown in an O,-enriched atmosphere than those grown under ambient conditions (Le Thiec et al, 1994b). This is associated with a decrease in stomatal aperture.…”
mentioning
confidence: 96%