Temporal dynamics of the response to Al stress in Eucalyptus grandis x Eucalyptus camaldulensis

Autor(es)

de Alcantara, Berenice K. ^[1] ; Pizzaia, Daniel ^[1] ; Piotto, Fernando A. ^[1] ; Borgo, Lucelia ^[1] ; Brondani, Gilvano E. ^[2] ; Azevedo, Ricardo A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, ESALQ, Dept Genet, BR-13400970 Piracicaba, SP - Brazil

^[2] Univ Fed Mato Grosso, Dept Engn Florestal, Fac Engn Florestal, BR-78060900 Cuiaba, MT - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Anais da Academia Brasileira de Ciências; v. 87, n. 2, p. 1063-1070, JUN 2015.
• Citações Web of Science: 3

Resumo

Lipid peroxidation and root elongation of Eucalyptus grandis x Eucalyptus camaldulensis were studied under stress conditions in response to aluminum (Al), a metal known to limit agricultural productivity in acidic soils primarily due to reduced root elongation. In Brazil, the Grancam 1277 hybrid (E. grandis x E. camaldulensis) has been planted in the ``Cerrado{''}, a region of the country with a wide occurrence of acidic soils. The present study demonstrated that the hybrid exhibited root growth reduction and increased levels of lipid peroxidation after 24h of treatment with 100 mu M of Al, which was followed by a reduction in lipid peroxidation levels and the recovery of root elongation after 48h of Al exposure, suggesting a rapid response to the early stressful conditions induced by Al. The understanding of the temporal dynamics of Al tolerance may be useful for selecting more tolerant genotypes and for identifying genes of interest for applications in bioengineering. (AU)

• Processo FAPESP: 10/50497-0 - Alteracoes na expressao de genes para lignina e tolerancia induzida ao estresse com ai3+ em uma linhagem de milho.
• Beneficiário: Berenice Kussumoto de Alcântara da Silva
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 09/54676-0 - Estresse oxidativo induzido por metais: novas abordagens
• Beneficiário: Ricardo Antunes de Azevedo
• Modalidade de apoio: Auxílio à Pesquisa - Temático