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| Project A 6 |
| Experiment
2: Allocation of C-metabolites in beech under the influence of ozone
and/or Phytophthora citricola |
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| Design |
Since autumn 2002
beech saplings were grown in eight lysimeters, whereas each four
were exposed to ambient respectively double ambient ozone. A detailed
description of the experiment can be found in project B12.
In 2006 a root infection with Phythophthora
citricola was performed on two lysimeters of each ozone
treatment. At the same time plants were labelled with 13C
and 15N.
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| Results |
In project A6, we
investigated the carbohydrate metabolism of beech leaves since 2003. Up
to the year 2005, no significant onzone effects were observed (fig. 1).
In 2006 we monitored the root infection with P. citricola and examined the
allocation of 13C in starch pools of leaves, twigs, stem
and roots for effects of ozone and / or Phytophthora infection.
All analyses of the year 2006 are still in progress.
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