| Registro completo |
| Provedor de dados: |
Rev. Bras. Bot.
|
| País: |
Brazil
|
| Título: |
Photosynthetic properties of three Brazilian seaweeds
|
| Autores: |
Chaloub,Ricardo M.
Reinert,Fernanda
Nassar,Cristina A. G.
Fleury,Beatriz G.
Mantuano,Dulce G.
Larkum,Anthony W. D.
|
| Data: |
2010-06-01
|
| Ano: |
2010
|
| Palavras-chave: |
Chlorophyll fluorescence
Lobophora variegata
Plocamium brasiliensis
Ulva fasciata
|
| Resumo: |
Photosynthetic performance of distinct marine macroalgae, Ulva fasciata Delile (green alga), Lobophora variegata (J. V. Lamouroux) Womersley ex E. C. Oliveira (brown alga), and Plocamium brasiliensis (Greville) M. A. Howe & W. R. Taylor (red alga), were compared using a pulse amplitude-modulated fluorometer. The maximum quantum yield (Fv/Fm) ranged from 0.80 to 0.51, and the lowest value was found in P. brasiliensis. Under 400 µmol photons m-2 s-1 irradiance, the highest value of photochemical quenching (qP = 0.92 ± 0.13) was observed for U. fasciata. The red alga P. brasiliensis dissipated high amounts of excitation energy (qN = 0.56 ± 0.09), resulting in relatively low values for the effective quantum yield of PS-II (0.23 ± 0.04), as well as for the relative electron transport rate (3.3 ± 0.7). The high photosynthetic potential found for U. fasciata partially explains the species ability for rapid growth and high productivity.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000200017
|
| Editor: |
Sociedade Botânica de São Paulo
|
| Relação: |
10.1590/S0100-84042010000200017
|
| Formato: |
text/html
|
| Fonte: |
Brazilian Journal of Botany v.33 n.2 2010
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
