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Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/1073
Título: 
Biochemical dissection of diageotropica and Never ripe tomato mutants to Cd-stressful conditions
Autor(es): 
Instituição: 
  • Universidade de São Paulo (USP)
  • Universidade Estadual Paulista (UNESP)
ISSN: 
0981-9428
Financiador: 
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Número do financiamento: 
FAPESP: 09/54676-0
Resumo: 
In order to further address the modulation of signaling pathways of stress responses and their relation to hormones, we used the ethylene-insensitive Never ripe (Nr) and the auxin-insensitive diageotropica (dgt) tomato mutants. The two mutants and the control Micro-Tom (MT) cultivar were grown over a 40-day period in the presence of Cd (0.2 mM CdCl2 and 1 mM CdCl2). Lipid peroxidation, leaf chlorophyll, praline content, Cd content and antioxidant enzyme activities in roots, leaves and fruits were determined. The overall results indicated that the MT genotype had the most pronounced Cd damage effects while Nr and dgt genotypes might withstand or avoid stress imposed by Cd. This fact may be attributed, at least in part, to the fact that the known auxin-stimulated ethylene production is comprised in dgt plants. Conversely, the Nr genotype was more affected by the Cd imposed stress than dgt, which may be explained by the fact that Nr retains a partial sensitivity to ethylene. These results add further information that should help unraveling the relative importance of ethylene in regulating the cell responses to stressful conditions. (C) 2012 Elsevier Masson SAS. All rights reserved.
Data de publicação: 
1-Jul-2012
Citação: 
Plant Physiology and Biochemistry. Paris: Elsevier France-editions Scientifiques Medicales Elsevier, v. 56, p. 79-96, 2012.
Duração: 
79-96
Publicador: 
Elsevier France-editions Scientifiques Medicales Elsevier
Palavras-chaves: 
  • Hormonal mutants
  • Antioxidant enzymes
  • Oxidative stress
  • Cadmium Heavy metals
  • Ethylene
  • auxin
Fonte: 
http://dx.doi.org/10.1016/j.plaphy.2012.04.009
Endereço permanente: 
Direitos de acesso: 
Acesso restrito
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/1073
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