Cryptochrome-1-dependent execution of programmed cell death induced by singlet oxygen in Arabidopsis thaliana.

ABSTRACT: Programmed cell death (PCD) plays an important role during the life cycle of higher organisms. Although several regulatory mechanisms governing PCD are thought to be conserved in animals and plants, light-dependent cell death represents a form of PCD that is unique to plants. The light requirement of PCD has often been associated with the production of reactive oxygen species during photosynthesis. In support of this hypothesis, hydrogen peroxide and superoxide have been shown to be involved in triggering a PCD response. In the present work, we have used the conditional flu mutant of Arabidopsis to analyze the impact of another reactive oxygen species, singlet oxygen, on cell death. Unexpectedly, the light-dependent release of singlet oxygen alone is not sufficient to induce PCD of flu see

SUBMITTER: Danon A 

PROVIDER: S-EPMC1636574 | biostudies-literature | 2006 Nov

REPOSITORIES: biostudies-literature