Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/5003
Título: Actividades enzimáticas antioxidativas em Cistus ladanifer L. provenientes de áreas não contaminadas em elementos vestigiais
Outros títulos: Antioxidant enzymes activity of Cistus ladanifer L. from areas non contaminated in trace elements
Autor: Santos, Erika
Abreu, Maria Manuela
Saraiva, Jorge
Nabais, Cristina
Palavras-chave: Cistus ladanifer
antioxidative enzymes
climatic conditions
non-contaminated soils
trace elements
Data: 2011
Editora: SCAP
Citação: "Revista de Ciências Agrárias". ISSN 0871-018x. 34 (2) (2011) 32-43
Resumo: The aim of this study was to evaluate the antioxidant enzymes activity (catalase, per-oxidase and superoxide dismutase) and the concentrations of As, Cu, Pb and Zn in leaves from two populations of Cistus ladanifer growing on soils non-contaminated with trace elements (Caldeirão and Pomarão), but with different climatic conditions and in two different seasons (spring and summer). In both areas, total and available concentra-tions (DTPA extraction) of trace elements in soils were low. The distribution of elements for young and mature leaves was similar be-tween areas and seasons. The enzyme activi-ties varied with the plant population. Leaves collected in the two seasons, except young leaves from Pomarão collected in summer, showed enzymatic activity in the soluble and ionic fractions. Comparing the seasons and sampling areas, C. ladanifer enzymatic ac-tivities represent a tolerance mechanism to different stress factors (UV radiation, high air temperature in summer, drought, low-medium fertility in soils, trace element con-centrations in soil), giving it a high plasticity
Peer review: yes
URI: http://hdl.handle.net/10400.5/5003
ISSN: 0871-018x
Aparece nas colecções:DCEB - Artigos de Revistas

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