ArticlePlant physiology2001
Comparison of gas exchange and bioassay determinations of the ammonia compensation point in Luzula sylvatica (Huds.) Gaud.
Article in Plant physiology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Toward the improvement of total nitrogen deposition budgets in the United States.The Science of the total environment · 2019Article
- Temporal variability of ammonia emission potentials for six plant species in an evergreen subtropical forest in southwest China.Environmental science and pollution research international · 2017Article
- Increasing importance of deposition of reduced nitrogen in the United States.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
- Dynamic and steady-state responses of inorganic nitrogen pools and NH(3) exchange in leaves of Lolium perenne and Bromus erectus to changes in root nitrogen supply.Plant physiology · 2002Article
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Authors and funding
5 authors.
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Abstract
Determinations of the NH(3) compensation point for the understory plant of semi-natural woodlands Luzula sylvatica (Huds.) Gaud. were carried out by measurements of gas exchange and by calculation from the NH(4)(+) concentration and pH of extracts of the foliar apoplast. Compensation points determined by gas exchange measurements were among the lowest yet reported (0.51-1.10 microg NH(3) m(-3)) and those calculated from apoplast extracts were lower than any yet reported (0.017-0.54 microg NH(3) m(-3)). Those determined by gas exchange were consistently found to be between 2 and 30 times higher than those determined from apoplast extracts. Consideration of possible causes of this discrepancy, which is not confined to this investigation, showed that all likely errors would result in an increase in the discrepancy, or were insufficient to account for observed differences. It is suggested that spatial variability of pH and NH(4)(+) concentration within the foliar apoplast represents the most promising line for further investigation. It is also shown that the foliar apoplast of L. sylvatica is sufficiently buffered to eliminate the need for correction of H(+) concentration for dilution during extraction, but that it is necessary to correct the NH(4)(+) concentration of apoplast extracts for dilution.
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