dc.contributor.author |
Cernusak, Lucas A. |
en |
dc.contributor.author |
Winter, Klaus |
en |
dc.contributor.author |
Martinez, Carlos |
en |
dc.contributor.author |
Correa, Edwin |
en |
dc.contributor.author |
Aranda, Jorge |
en |
dc.contributor.author |
Garcia, Milton N. |
en |
dc.contributor.author |
Jaramillo, Carlos A. |
en |
dc.contributor.author |
Turner, Benjamin L. |
en |
dc.date.accessioned |
2011-12-20T14:44:49Z |
|
dc.date.available |
2011-12-20T14:44:49Z |
|
dc.date.issued |
2011 |
|
dc.identifier.citation |
Cernusak, Lucas A., Winter, Klaus, Martinez, Carlos, Correa, Edwin, Aranda, Jorge, Garcia, Milton N., Jaramillo, Carlos A., and Turner, Benjamin L. 2011. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F17527">Responses of legume versus non-legume tropical tree seedlings to elevated [CO2]</a>." <em>Plant Physiology</em>. 157 (1):372–385. <a href="https://doi.org/10.1104/pp.111.182436">https://doi.org/10.1104/pp.111.182436</a> |
en |
dc.identifier.issn |
0032-0889 |
|
dc.identifier.uri |
http://hdl.handle.net/10088/17527 |
|
dc.description.abstract |
We investigated responses of growth, leaf gas exchange, carbon-isotope discrimination, and whole-plant water-use efficiency to elevated [CO2] in seedlings of five leguminous and five non-leguminous tropical tree species. Plants were grown at CO2 partial pressures of 40 and 70 Pa. As a group, legumes did not differ from non-legumes in growth response to elevated [CO2]. The mean ratio of final plant dry mass at elevated to ambient [CO2] (ME/MA) was 1.32 and 1.24 for legumes and non-legumes, respectively. However, there was large variation in ME/MA among legume species (0.92 to 2.35), whereas non-legumes varied much less (1.21 to 1.29). Variation among legume species in ME/MA was closely correlated with their capacity for nodule formation, as expressed by nodule mass ratio, the dry mass of nodules for a given plant dry mass. Whole-plant water-use efficiency (WP) increased markedly in response to elevated [CO2] in all species. The ratio of intercellular to ambient CO2 partial pressures during photosynthesis remained approximately constant at ambient and elevated [CO2], as did carbon isotope discrimination, suggesting WP should increase proportionally for a given increase in atmospheric [CO2]. Results suggest that tree legumes with a strong capacity for nodule formation could have a competitive advantage in tropical forests as atmospheric [CO2] rises, and that water-use efficiency of tropical tree species will increase under elevated [CO2]. |
en |
dc.relation.ispartof |
Plant Physiology |
en |
dc.title |
Responses of legume versus non-legume tropical tree seedlings to elevated [CO2] |
en |
dc.type |
Journal Article |
en |
dc.identifier.srbnumber |
102188 |
|
dc.identifier.doi |
10.1104/pp.111.182436 |
|
rft.jtitle |
Plant Physiology |
|
rft.volume |
157 |
|
rft.issue |
1 |
|
rft.spage |
372 |
|
rft.epage |
385 |
|
dc.description.SIUnit |
Peer-reviewed |
en |
dc.description.SIUnit |
STRI |
en |
dc.citation.spage |
372 |
|
dc.citation.epage |
385 |
|