Comparative evaluation of the effects of gaseous pollutants, acidic deposition and mineral deficiencies: structural changes in the cells of forest plants

Holopainen, Toini; Anttonen, S.; Wulff, A.; Palomäki, Virpi; Kärenlampi, L.

doi:10.1016/0167-8809(92)90009-z

Cited by 76 publications

(52 citation statements)

References 77 publications

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“…Reduced size of cbloroplasts and starch, breakdown ofthe membrane systems, increases in size and number of plastoglobuli, disorganization of mitochondria, and increased electron density of stroma and amount of cytoplasmic lipids are typical ozoneinduced ultrastructural injuries reported in several species (e.g. Sutinen, 1989;Sutinen et al, 1990;Holopainen et al, 1992;Ojanpera et al, 1992). However, in contrast to earlier investigations, the relationships between chloroplast size, amount of starch and grow^th rate were indistinct in this study.…”

Section: Discussionmentioning

confidence: 99%

The ozone sensitivity of birch (Betula pendula) in relation to the developmental stage of leaves

et al. 1996

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St;MMARYClonal birch (Betula peiidula Roth.) seedlings at three different de\ elopmental stages were fumigated for 12 h daily with 50, 90 and 1 30 ppb ozone for 25 d. When transferred to fumigation chambers, the leaves of plant group 1 were almost expanded, in group 2 they were fast enlarging, and in group 3 all the leaves emerged under the exposure. The plants in which the lea\es emerged under the ozone stress were the most resistant to ozone. In groups 1 and 2 ozone treatments reduced the growth of leaf biomass. and induced more visible injuries on leaves and ultrastructural symptoms in chloroplasts than they did in group 3. The stomatai densjt> of leaves increased in response to ozone in all the groups, Tbe effects of ozone on stomatal conductance were complex. In groups 1 and 2 the 50 ppb ozone exposure increased stomatal conductance whereas lowered conductances were observed in group 3 after fumigation with 90 and 130 ppb ozone. The results suggest that the leaves developing under ozone fumigation were better able to tolerate tbe ozone stress, as indicated by unaffected or stimulated growtb and small amounts of \-isible and ultrastructural injuries and stomatal cbanges. It is possible to regard the changes as acclimation reactions.

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Section: Discussionmentioning

confidence: 99%

The ozone sensitivity of birch (Betula pendula) in relation to the developmental stage of leaves

et al. 1996

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“…By means of electron microscopy, early stress responses can be observed 0939Ð5075/2007/0300Ð0246 $ 06.00 " 2007 Verlag der Zeitschrift für Naturforschung, Tübingen · http://www.znaturforsch.com · D in the cell structure before the first visible symptoms occur (Holopainen et al, 1992). Special emphasis was put on the chloroplast ultrastructure because alterations in the chloroplast could lead to changes in carbon assimilation and biomass accumulation.…”

Section: Introductionmentioning

confidence: 99%

UV-B Effect on Constituents of Azolla caroliniana

Ibrahim

Mostafa

2007

Zeitschrift Für Naturforschung C

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Changes in growth and ultrastructure of Azolla caroliniana in response to elevated UV-B radiation were investigated. Exposure of plants to UV-B radiation for 1, 8, 16, 24 and 48 h exhibited a significant decrease in biomass and relative growth rate. This decrease resulted in an increase in doubling time over the control. Also, Chl a and b contents were significantly decreased especially after 16 h. The reduction was accompanied by a decrease in 5-aminolaevulinic acid content (precursor of chlorophyll). On the other hand, contents of carotenoid and UV-absorbing phenolic compounds (flavonoids and anthocyanins) were increased.

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“…The mechatiism of simultaneous N and P sequestration in vacuolar bodies of tnycorrliizas has not been shown previously, but is seemingly widespread in fungi. Similar bodies were found in the hyphal mantle of synthesized Pisolithus tinctorius -Picea abies mycorrhizas exposed to high nitrogen treatment, but not present at lower N concentrations (Haug, Pritscb & Oberwinkler, 1992), Nitrogen containing bodies were also present in the hyphal mantle of diverse mycorrhizal types collected on forest plots (unpublished and Holopainen et al, 1995), A comparable reaction was observed in lichens from nitrogen polluted areas (Holopainen et al, 1992),…”

Section: Discussionmentioning

confidence: 72%

“…The deleterious itiRuence of in-Finlatid. Samples from cotitrol plots cotitaitied otily creasing soil tiitrogen levels oti the developmetit and a few bodies which resembled polyphosphate futictioning of mycorrhizas of forest trees is well droplets as described iti the literature (Holopaitien & documented (Soderstrom, 1991;Herrmann et af, Vaittineti, 1988;Holopainen et al, 1992). The 1992; Holopainen & Heinonen-Tanski, 1993), but is appearance of the large, osmopbilic bodies was also still a matter of debate.…”

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Deposition of nitrogen in vacuolar bodies of Cenococcum geophilum Fr. mycorrhizas as detected by electron energy loss spectroscopy

et al. 1995

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SUMMARYNitrogen fertilization of potted Pinus sylvestris L. seedlings growing in forest humus was carried out using two different concentrations of ainmonium sulphate and ammonium chloride, corresponding to 50 and 100 kg N ha~Ĉ enococcum geophilum Fr. mycorrhizas were collected from the root systems of the seedlings and investigated by light and transmission electron microscopy. The number of vacuolar osmophilic bodies in the mantle byphae significantly increased after fertilization witb both atnmonium salts. Tbe bodies were analyzed by electron energy loss speetroscopy. Nitroget-i and phosphorus content increased following ammonium sulphate fertilization, but decreased witb ammonium chloride. Cytoplasmic injury was observed in the byphae in both ammonium chloride treatments but only in tbe higher ammonium sulphate treatment. It is hypothesized that the bodies have a transient storage and N-Hltering function.

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Comparative evaluation of the effects of gaseous pollutants, acidic deposition and mineral deficiencies: structural changes in the cells of forest plants

Cited by 76 publications

References 77 publications

The ozone sensitivity of birch (Betula pendula) in relation to the developmental stage of leaves

The ozone sensitivity of birch (Betula pendula) in relation to the developmental stage of leaves

UV-B Effect on Constituents of Azolla caroliniana

Deposition of nitrogen in vacuolar bodies of Cenococcum geophilum Fr. mycorrhizas as detected by electron energy loss spectroscopy

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