dc.contributor.author |
Garrish, Valerie |
en |
dc.contributor.author |
Cernusak, Lucas A. |
en |
dc.contributor.author |
Winter, Klaus |
en |
dc.contributor.author |
Turner, Benjamin L. |
en |
dc.date.accessioned |
2013-09-06T19:16:35Z |
|
dc.date.available |
2013-09-06T19:16:35Z |
|
dc.date.issued |
2010 |
|
dc.identifier.citation |
Garrish, Valerie, Cernusak, Lucas A., Winter, Klaus, and Turner, Benjamin L. 2010. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F21171">Nitrogen to phosphorus ratio of plant biomass versus soil solution in a tropical pioneer tree, Ficus insipida</a>." <em>Journal of experimental botany</em>. 61 (13):3735–3748. <a href="https://doi.org/10.1093/jxb/erq183">https://doi.org/10.1093/jxb/erq183</a> |
en |
dc.identifier.issn |
0022-0957 |
|
dc.identifier.uri |
http://hdl.handle.net/10088/21171 |
|
dc.description.abstract |
It is commonly assumed that the nitrogen to phosphorus (N:P) ratio of a terrestrial plant reflects the relative availability of N and P in the soil in which the plant grows. Here, this was assessed for a tropical pioneer tree, Ficus insipida. Seedlings were grown in sand and irrigated with nutrient solutions containing N:P ratios ranging from 100. The experimental design further allowed investigation of physiological responses to N and P availability. Homeostatic control over N:P ratios was stronger in leaves than in stems or roots, suggesting that N:P ratios of stems and roots are more sensitive indicators of the relative availability of N and P at a site than N:P ratios of leaves. The leaf N:P ratio at which the largest plant dry mass and highest photosynthetic rates were achieved was [~]11, whereas the corresponding whole-plant N:P ratio was [~]6. Plant P concentration varied as a function of transpiration rate at constant nutrient solution P concentration, possibly due to transpiration-induced variation in the mass flow of P to root surfaces. The transpiration rate varied in response to nutrient solution N concentration, but not to nutrient solution P concentration, demonstrating nutritional control over transpiration by N but not P. Water-use efficiency varied as a function of N availability, but not as a function of P availability. |
en |
dc.relation.ispartof |
Journal of experimental botany |
en |
dc.title |
Nitrogen to phosphorus ratio of plant biomass versus soil solution in a tropical pioneer tree, Ficus insipida |
en |
dc.type |
Journal Article |
en |
dc.identifier.srbnumber |
90766 |
|
dc.identifier.doi |
10.1093/jxb/erq183 |
|
rft.jtitle |
Journal of experimental botany |
|
rft.volume |
61 |
|
rft.issue |
13 |
|
rft.spage |
3735 |
|
rft.epage |
3748 |
|
dc.description.SIUnit |
STRI |
en |
dc.description.SIUnit |
Understanding and Sustaining a Biodiverse Planet |
en |
dc.description.SIUnit |
Forces of Change |
en |
dc.citation.spage |
3735 |
|
dc.citation.epage |
3748 |
|