Journal ArticleDOI
The uptake and translocation of 14C in Scots pine seedlings of differing susceptibility to sulphur dioxide1
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The inhibition of 14C-transport from needles to roots following SO2 fumigation was stronger than the reduction in I4CO2 uptake, and the changes were more marked in the SO2-sensitivc plants than in the more tolerant ones.Abstract:
The influence of SO2 on the metabolism of SO2-tolerant and SO2-sensitive seedlings of Scots pine was investigated. Under the influence of SO2 changes were observed in 14CO2 assimilation, in 14C-fixation pattern and in 14C-translocation. The changes were more marked in the SO2-sensitivc plants than in the more tolerant ones. The inhibition of 14C-transport from needles to roots following SO2 fumigation was stronger than the reduction in I4CO2 uptake.read more
Citations
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Journal ArticleDOI
The effect of air pollutants on physiological processes in plants
TL;DR: A wide range in sensitivity of photosynthesis both within and between species is evident from the literature for the pollutants sulphur dioxide, ozone, nitrogen oxide and hydrogen fluoride as mentioned in this paper, but much of this variation is in response to differences in environmental conditions both prior to and during fumigation.
Journal ArticleDOI
The effects of ozone on the root dynamics of seedlings and mature red oak (Quercus rubra L.)
TL;DR: In this paper, the authors used the compartment-flow model to calculate gross fine-root production and below-ground carbon use efficiency (BUE) of mature red oak seedlings and mature trees.
Journal ArticleDOI
Ozone-induced microscopical changes and quantitative carbohydrate contents of hybrid poplar (Populus × euramericana)
TL;DR: The plants injured by ozone showed quite distinct patterns of metabolite responses as well as enzyme activities (PEP- and RubP-carboxylase) in the leaves from the top to the bottom, there were also remarkable differences in the reaction of sucrose and inositol between leaves and stem bark.
Ectomycorrhizal fungi of Scots pine as affected by litter and humus
TL;DR: The results of the field and laboratory experiments show that sod-cutting in Scots pine stands with thick nitrogen-rich litter and humus layers leads to a (partial) restoration of the ectomycorrhizal flora.
Decline of carpophores of mycorrhizal fungi in stands of Pinus sylvestris
TL;DR: The hypothesis was put forward that the functioning of mycorrhiza was hampered, either through a decrease of tree vitality or by changes in soil chemistry, both resulting from air pollution.
References
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Journal ArticleDOI
Effects of Chronic Air Pollution Stress on Photosynthesis, Carbon Allocation, and Growth of White Pine Trees
TL;DR: In this paper, a comparison of annual growth, photosynthetic capacity, and fate of photosynthesis products was made to determine the rate and case of declining vigor of oxidant-stressed white pine (Pinus strobus L.) growing near Oak Ridge, Tennessee.
Journal ArticleDOI
Effects of Sulphur Dioxide on Sugar and Free Amino Acid Content of Pine Seedlings
S. S. Malhotra,S.K. Sarkar +1 more
TL;DR: In this paper, gaseous SO was applied to jack pine (Pinus banksiana Lamb) seedlings, which resulted in a shift between reducing and non-reducing sugars, suggesting a conversion from the latter to the former at high S02 concentrations.
Book ChapterDOI
Chapter 22 – Allocation of Resources to Defense and Repair
S.B. McLAUGHLIN,D.S. Shriner +1 more
Journal ArticleDOI
Changes in Carbohydrate Levels in Red Kidney Bean (Phaseolus vulgaris L.) Exposed to Sulphur Dioxide
M. J. Koziol,C. F. Jordan +1 more
TL;DR: Red kidney bean (Phaseolus vulgaris L.) was exposed to various concentrations of S02 for 24 h (16 h light/8 h dark photoperiod) with continuous monitoring of photosynthetic and respiratory activity to study decreases in photosynthesis and the depletion of sugar and starch levels.
Journal ArticleDOI
The comparative effects of sulfur dioxide on photosynthesis and translocation in bean
TL;DR: Inhibition of phloem translocation at common ambient levels (0·1 p.p.m.) of sulfur dioxide is important to the overall growth and yield of sensitive agricultural crops.