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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Cadmium and copper stress affect seedling growth and enzymatic activities in germinating barley seeds
Archives of Agronomy and Soil Science, Volume 60, No. 6, Year 2014
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Description
To assess cadmium (Cd) and copper (Cu) phytotoxicity, barley (Hordeum vulgare L. var. 'Manel') seeds were germinated for a period of 2 days in a solution containing CdCl2 (25, 50, and 100 μM) or CuSO4 (100, 300, and 500 μM). The growth of radicles and shoots decreased while the water content in stressed seeds remained near control values. A decline in α-amylase, acid phosphatase, and alkaline phosphatase activities was also observed in endosperms, while β-amylase activity was only slightly modified by heavy metal treatments. Furthermore, Cd and Cu increased lipid peroxidation, enhanced soluble protein and sugar content even at the lowest dose, and induced a significant accumulation of proline, essentially in radicles. A synthesis of the results reveals that the inhibition of seed germination after exposure to Cd or Cu is not a consequence of reduced water uptake by seed tissues, but may be due to a failure in reserve mobilization from the endosperm. © 2013 © Taylor & Francis.
Authors & Co-Authors
Kalai, Tawba
Tunisia, Tunis
Unite de Recherche Nutrition et Metabolisme Azotes et Proteines de Stress 99/ur/09-20
Khamassi, Khalil
Tunisia, Tunis
University of Carthage, Institut National de la Recherche Agronomique de Tunisie
Teixeira da Silva, Jaime A.
Japan, Kagawa Prefecture
Miki-cho Post Office
Gouia, Houda
Tunisia, Tunis
Unite de Recherche Nutrition et Metabolisme Azotes et Proteines de Stress 99/ur/09-20
Kaab, Leila Bettaieb Ben
Tunisia, Tunis
Unite de Recherche Nutrition et Metabolisme Azotes et Proteines de Stress 99/ur/09-20
Statistics
Citations: 44
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1080/03650340.2013.838001
e-ISSN:
14763567
Research Areas
Environmental