Millett, J., Svensson, B.M., Newton, J. and Rydin, H. (2012) Reliance on prey derived nitrogen by the carnivorous plant Drosera rotundifolia decreases with increasing nitrogen deposition. New Phytologist, 195(1), pp. 182-188. (doi: 10.1111/j.1469-8137.2012.04139.x)
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Abstract
Carnivory in plants is presumed to be an adaptation to a low-nutrient environment. Nitrogen (N) from carnivory is expected to become a less important component of the N budget as root N availability increases. <p/>Here, we investigated the uptake of N via roots versus prey of the carnivorous plant Drosera rotundifolia growing in ombrotrophic bogs along a latitudinal N deposition gradient through Sweden, using a natural abundance stable isotope mass balance technique. <p/>Drosera rotundifolia plants receiving the lowest level of N deposition obtained a greater proportion of N from prey (57%) than did plants on bogs with higher N deposition (22% at intermediate and 33% at the highest deposition). When adjusted for differences in plant mass, this pattern was also present when considering total prey N uptake (66, 26 and 26 μg prey N per plant at the low, intermediate and high N deposition sites, respectively). The pattern of mass-adjusted root N uptake was opposite to this (47, 75 and 86 μg N per plant). <p/>Drosera rotundifolia plants in this study switched from reliance on prey N to reliance on root-derived N as a result of increasing N availability from atmospheric N deposition.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Newton, Dr Jason |
Authors: | Millett, J., Svensson, B.M., Newton, J., and Rydin, H. |
College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
Journal Name: | New Phytologist |
ISSN: | 0028-646X |
Published Online: | 16 April 2012 |
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