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dc.contributor.author
Iannone, María Florencia
dc.contributor.author
Groppa, María Daniela
dc.contributor.author
Benavides, Maria Patricia
dc.date.available
2017-06-09T20:34:10Z
dc.date.issued
2015-01
dc.identifier.citation
Iannone, María Florencia; Groppa, María Daniela; Benavides, Maria Patricia; Cadmium induces different biochemical responses in wild type and catalase-deficient tobacco plants; Elsevier Science; Environmental and Experimental Botany; 109; 1-2015; 201-211
dc.identifier.issn
0098-8472
dc.identifier.uri
http://hdl.handle.net/11336/17935
dc.description.abstract
The response of tobacco (Nicotiana tabacum L.) wild type SR1 and catalase-deficient CAT1AS plants was evaluated after exposure to CdCl2. CAT1AS plants accumulated more Cd than SR1 plants, and this was associated with reduced growth, but higher chlorophyll content and cell viability. Despite catalase deficiency, CAT1AS plants did not accumulate more H2O2 than the wild line when exposed to Cd, probably due to the fact that CAT1AS plants counterbalanced their catalase deficiency by increasing the constitutive guaiacol peroxidase and ascorbate peroxidase activities and by reducing the basal NADPH oxidase-like enzyme activity. Both lines could activate their antioxidant system upon Cd stress, although the stress response pathways showed wide differences in the mineral and nitrogen metabolism, since the wild-type line had reduced nitrates and iron content, while CAT1AS maintained the same level of nitrates and Fe than that of non-treated plants, and responded with a significant increase in proline. The results showed that, unlike previous reports using other type of stress with the same line plants, catalase did not play a crucial role in protecting against Cd toxicity and CAT1AS plants, compared to SR1, were able to activate alternative defence mechanisms against Cd toxicity.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Cadmium
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Hydrogen Peroxide
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Nicotiana Tabacum
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Catalase
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Reactive Oxygen Species
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Bioquímica y Biología Molecular
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Cadmium induces different biochemical responses in wild type and catalase-deficient tobacco plants
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-06-09T15:02:46Z
dc.journal.volume
109
dc.journal.pagination
201-211
dc.journal.pais
Países Bajos
dc.journal.ciudad
Ámsterdam
dc.description.fil
Fil: Iannone, María Florencia. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Biológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Groppa, María Daniela. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Biológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Benavides, Maria Patricia. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Biológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Environmental and Experimental Botany
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0098847214001798
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.envexpbot.2014.07.008