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| Content Provider | Scientific Electronic Library Online (SciELO) |
|---|---|
| Author | Souza, Gustavo M. Sato, Agnaldo M. Ribeiro, Rafael V. Prado, Carlos Henrique B. A. |
| Abstract | Leaf CO2 assimilation (A) as a function of photosynthetic photon flux density (Q) or intercellular CO2 concentration (Ci) and chlorophyll fluorescence measurements were carried out on four tropical woody species growing in forest gap and understorey (Bauhinia forficata Link. and Guazuma ulmifolia Lam. as pioneers, and Hymenaea courbaril L. and Esenbeckia leiocarpa Engl. as non-pioneers). Chlorophyll fluorescence indicated similar acclimation capacities of photochemical apparatus to contrasting light environments irrespective to plant species. Maximum CO2 assimilation and quantum yield derived from A/Q curves indicated higher photosynthetic capacity in pioneer than in non-pioneer species in forest gap. However, the differences among species did not show a straightforward relation with their successional status regarding data derived from A/Q curves under understorey conditions. Both successional groups are able to sustain positive carbon balance under contrasting natural light availabilities, modifying photochemical and biochemical photosynthetic traits with similar phenotypic plasticity capacity. |
| Related Links | http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-84042010000400002&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000400002&lng=en&nrm=iso |
| Starting Page | 529 |
| Ending Page | 538 |
| Page Count | 10 |
| File Format | |
| ISSN | 01008404 |
| DOI | 10.1590/S0100-84042010000400002 |
| Journal | Brazilian Journal of Botany |
| Issue Number | 4 |
| Volume Number | 33 |
| Language | English |
| Publisher | Sociedade Botânica de São Paulo |
| Publisher Date | 2010-12-01 |
| Publisher Institution | Universidade do Oeste Paulista Laboratório de Ecofisiologia Vegetal Instituto Agronômico Centro de Pesquisa e Desenvolvimento em Ecofisiologia e Biofísica Universidade Federal de São Carlos Departamento de Botânica |
| Publisher Place | Brazil |
| Access Restriction | Open |
| Subject Keyword | Acclimation Chlorophyll fluorescence Forest succession Leaf gas exchange Photosynthetic response curves Aclimatação Curvas de resposta fotossintética Florescência da clorofila Trocas gasosas foliares Sucessão florestal |
| Alternative Title | Respostas fotossintéticas de quatro espécies tropicais arbóreas crescidas sob condições de clareira e de sub-bosque em uma floresta semi-decídua |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science |
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