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Influence of chronic ozone stress on carbon translocation pattern into rhizosphere microbial communities of beech trees (Fagus sylvatica L.) during a growing season.
Plant Soil 323, 85-95 (2009)
The influence of long-term chronic ozone exposure on carbon fluxes from young beech trees (Fagus sylvatica L.) into the phospholipid fraction of microbial communities (PLFA) in the rhizosphere and into the dissolved organic carbon (DOC) fraction was studied in a lysimeter experiment using 13C depleted CO2 over one vegetation period to identify possible changes in below ground carbon translocation processes due to the plant stress. It could be shown that microbial biomass as well as individual microbial communities and their activity pattern in the rhizosphere of young beech trees are mainly driven by the vegetation period. An increase in total microbial biomass as well as individual microbial communities was detected during the vegetation period from June to September. However, also a clear ozone effect was visible mainly at the end of the vegetation period. Enzyme activities and PLFA data indicated earlier induced plant senescence as a response to the elevated ozone treatment. Furthermore higher microbial biomass and abundance of plant C utilizing microbes was observed in elevated ozone treatments over the whole vegetation period.
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Publication type
Article: Journal article
Document type
Scientific Article
Editors
Marschner, P.*
Keywords
PLFA; rhizosphere; 13C-labelling; Elevated ozone; Beech; Rhizosphere; Enzyme activity
ISSN (print) / ISBN
0032-079X
e-ISSN
1573-5036
Journal
Plant and Soil
Quellenangaben
Volume: 323,
Issue: 1-2,
Pages: 85-95
Publisher
Springer
Non-patent literature
Publications
Reviewing status
Peer reviewed