Metabolic patterns of 14C incorporation by selected vascular plants following field incubations with acetate-2-14G in two plant successional stages in Glacier Bay, Alaska
Metabolic patterns of some vascular plants ( Dryas sp., Vaccinium sp., Salix sp., Alnus sp., Epilobium sp.), occurring in successional habitats, following acetate-2-14C incubations in the field were demonstrated for the first time. Relative radioactivity within the alcoholic soluble fraction of each...
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| Format: | Text |
| Language: | English |
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Oxford University Press
1975
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| Online Access: | http://pcp.oxfordjournals.org/cgi/content/short/16/6/1017 |
| Summary: | Metabolic patterns of some vascular plants ( Dryas sp., Vaccinium sp., Salix sp., Alnus sp., Epilobium sp.), occurring in successional habitats, following acetate-2-14C incubations in the field were demonstrated for the first time. Relative radioactivity within the alcoholic soluble fraction of each species reflects its distribution in successional communities. A high level of 14C-sugars was present in the plants of the pioneer community; on the other hand a high level of 14C-organic acids was present in the plants of the forest community. Three patterns, based on the relative activities of the sugar- and organic acid-pools were noted which correspond to the range and the frequency of occurrence of each species in the successional stages. Only two types of 14C-amino acid levels were noted corresponding to the range of distribution. Plants having less than 10% relative radioactivity in amino acid-pools had a limited range of distribution and reside in only one habitat; plants having more than 10% radioactivity showed wider ranges of distribution occurring in at least two habitats. |
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