dc.contributor.author |
Png, Guochen K. |
en |
dc.contributor.author |
Turner, Benjamin L. |
en |
dc.contributor.author |
Albornoz, Felipe E. |
en |
dc.contributor.author |
Hayes, Patrick E. |
en |
dc.contributor.author |
Lambers, Hans |
en |
dc.contributor.author |
Laliberté, Etienne |
en |
dc.date.accessioned |
2017-04-25T12:30:37Z |
|
dc.date.available |
2017-04-25T12:30:37Z |
|
dc.date.issued |
2017 |
|
dc.identifier.citation |
Png, Guochen K., Turner, Benjamin L., Albornoz, Felipe E., Hayes, Patrick E., Lambers, Hans, and Laliberté, Etienne. 2017. "<a href="https://repository.si.edu/handle/10088/32232">Greater root phosphatase activity in nitrogen-fixing rhizobial but not actinorhizal plants with declining phosphorus availability</a>." <em>Journal of Ecology</em>. 105 (5):1246–1255. <a href="https://doi.org/10.1111/1365-2745.12758">https://doi.org/10.1111/1365-2745.12758</a> |
en |
dc.identifier.issn |
0022-0477 |
|
dc.identifier.uri |
https://hdl.handle.net/10088/32232 |
|
dc.description.abstract |
* The abundance of nitrogen (N)-fixing plants in ecosystems where phosphorus (P) limits plant productivity poses a paradox because N fixation entails a high P cost. One explanation for this paradox is that the N-fixing strategy allows greater root phosphatase activity to enhance P acquisition from organic sources, but evidence to support this contention is limited. * We measured root phosphomonoesterase (PME) activity of 10 N-fixing species, including rhizobial legumes and actinorhizal Allocasuarina species, and eight non-N-fixing species across a retrogressive soil chronosequence showing a clear shift from N to P limitation of plant growth and representing a strong natural gradient in P availability. * Legumes showed greater root PME activity than non-legumes, with the difference between these two groups increasing markedly as soil P availability declined. By contrast, root PME activity of actinorhizal species was always lower than that of co-occurring legumes and not different from non-N-fixing plants. * The difference in root PME activity between legumes and actinorhizal plants was not reflected in a greater or similar reliance on N fixation for N acquisition by actinorhizal species compared to co-occurring legumes. * Synthesis. Our results support the idea that N-fixing legumes show high root phosphatase activity, especially at low soil P availability, but suggest that this is a phylogenetically conserved trait rather than one directly linked to their N-fixation capacity. |
en |
dc.relation.ispartof |
Journal of Ecology |
en |
dc.title |
Greater root phosphatase activity in nitrogen-fixing rhizobial but not actinorhizal plants with declining phosphorus availability |
en |
dc.type |
Journal Article |
en |
dc.identifier.srbnumber |
142359 |
|
dc.identifier.doi |
10.1111/1365-2745.12758 |
|
rft.jtitle |
Journal of Ecology |
|
rft.volume |
105 |
|
rft.issue |
5 |
|
rft.spage |
1246 |
|
rft.epage |
1255 |
|
dc.description.SIUnit |
NMNH |
en |
dc.description.SIUnit |
STRI |
en |
dc.description.SIUnit |
Peer-reviewed |
en |
dc.citation.spage |
1246 |
|
dc.citation.epage |
1255 |
|