Journal article
High potential, but low actual, glycine uptake of dominant plant species in three Australian land-use types with intermediate N availability
A Kahmen, SJ Livesley, SK Arndt
Plant and Soil | Published : 2009
Abstract
The traditional view of the nitrogen (N) cycle has been challenged since the discovery that plants can compete with microbes for low molecular weight (LMW) organic N. Despite a number of studies that have shown LMW organic N uptake by plants, there remains a debate on the overall ecological relevance of LMW organic N uptake by plants across ecosystems with different N availabilities. We here report patterns of glycine N uptake by plants from three different Australian land-use types with intermediate N availability and low inherent glycine concentrations in the soil. Using 15N labeled tracers, we tested the potential of these plants to acquire glycine in ex-situ laboratory experiments and at..
View full abstractGrants
Funding Acknowledgements
We would like to thank Edith Huber for assistance in the field and for help with sample preparation in the laboratory, Matt Lee and Najib Ahmady for assistance with laboratory analyses. Nick Williams kindly assisted with identification of pasture plant species. Pamela Templer and two anonymous referees gave valuable comments on an earlier version of the manuscript. The Department of Sustainability and Environment of Victoria provided funding for this experiment. AK was financed by an Erwin-Schroedinger Fellowship of the Austrian Science Fund (FWF) and by a Marie-Curie Outgoing International fellowship of the European Union.