Impact of carbon and phosphate starvation on growth and programmed cell death of maritime pine suspension cells

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Azevedo, H (Autor) Outra; Castro, PH (Autor) Outra; Goncalves, JF (Autor) Outra; Lino Neto, T (Autor) Outra; Tavares, RM (Autor) Outra

Revista

A Revista está pendente de validação pelos Serviços Administrativos.

Título: IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-PLANT

Vol. 50

Páginas: 478-486

ISSN: 1054-5476

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 3 Citações

Outras Informações

ID Authenticus: P-009-T7H

DOI: 10.1007/s11627-014-9622-4

Abstract (EN): Programmed cell death is a fundamental aspect of plant development and defense. In suspension cultures of maritime pine (Pinus pinaster Ait.), cell death was associated with the simultaneous depletion of sugar and phosphate. This present work suggests that sugar rather than phosphate deprivation induced programmed cell death events, including degradation of nuclear DNA and remobilization of phosphate. However, phosphate starvation may have a synergistic effect on programmed cell death mediated by the lack of carbon source. Sugar and phosphate analogs were used to evaluate the nature of signaling events, and results suggested that programmed cell death induction by sugar starvation occurs downstream of hexokinase-based sugar sensing mechanisms, and that the synergistic effect of lack of phosphate is independent of phosphate sensing.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9