Carbohydrates leaving plants contribute to the pool of dissolved organic carbon in soil, postulated as a very attractive carbon source for microbial growth. By reason of increasing concern of tropospheric ozone damage on forest trees, this study focused on European beech (
Fagus sylvatica L.) and Norway spruce (
Picea abies (L.) Karst.) as experimental plants, since these are common in forests of Western Europe. Using different 13C-labelling techniques, individual groups of organisms were identified to be involved in the utilization of exudates, indicating a microbial food web in the rhizosphere. Different groups of organisms within the soil microbial biomass were investigated by phospholipid fatty acid (PLFA) profiling. Investigating beech and spruce rhizosphere microbial community structures, ozone influence on plants causes changes in the microbial community structure via the carbohydrate composition within plants and rhizodeposition.
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Carbohydrates leaving plants contribute to the pool of dissolved organic carbon in soil, postulated as a very attractive carbon source for microbial growth. By reason of increasing concern of tropospheric ozone damage on forest trees, this study focused on European beech (
Fagus sylvatica L.) and Norway spruce (
Picea abies (L.) Karst.) as experimental plants, since these are common in forests of Western Europe. Using different 13C-labelling techniques, individual groups of organisms were identifi...
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