Título
Copper stress on photosynthesis of Black Mangle (Avicennia germinans)
Autor
DANIEL GONZALEZ MENDOZA
FRANCISCO LEONEL ESPADAS Y GIL
LUIS FERNANDO ESCOBOZA GARCIA
JORGE MANUEL SANTAMARIA FERNANDEZ
JOSE OMAR ZAPATA PEREZ
Nivel de Acceso
Acceso Abierto
Referencia de datos
doi: DOI: 10.1590/S0001-37652013000200013
Materias
Resumen o descripción
The effects of copper toxicity on the photosynthetic activities of Avicennia germinans was investigated using two CuSO4 concentrations (0.062 and 0.33 M) added in Hoagland's solution in an aerated hydroponic system. Photosynthesis and chlorophyll fluorescence were measured after 30 h of copper stress. Results obtained in this study show that increasing levels of Cu+2 of 0.062 and 0.33 M Cu+2 resulted in a general reduction of the stomatal conductance (28 and 18%, respectively) and 100% of inhibition of net photosynthesis. Additionally, at these concentrations of Cu+2, reductions of chlorophyll fluorescence parameters were also observed. These changes suggested that the photosynthetic apparatus of Avicennia germinans was the primary target of the Cu+2 action. It is concluded that Cu+2 ions causes a drastic decline in photosynthetic gas exchange and Chlorophyll fluorescence parameters in A. germinans leaves.
Fecha de publicación
2013
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Fuente
Anais da Academia Brasileira de Ciências, 85(2), 665-670, 2013
Idioma
Inglés
Relación
&
ZAPATA-PEREZ, O. M. A. R. (2013). Copper stress on photosynthesis of black mangle (Avicennia germinans). Anais da Academia Brasileira de Ciências, 85(2), 665-670.
Sugerencia de citación
Gonzalez-Mendoza, D., ESCOBOZA-GARCIA, F. E. R. N. A. N. D. O., SANTAMARIA, J. M.,
Repositorio Orígen
Repositorio Institucional CICY
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