A Spatial Analysis of Physiological Changes Associated with Infection of Cotyledons of Marrow Plants with Cucumber Mosaic Virus.
AUTOR(ES)
Tecsi, L. I.
RESUMO
Changes in host primary metabolism associated with the compatible interaction between cucumber mosaic virus and cotyledons of the marrow plant (Cucurbita pepo L.) have been localized, first by measuring activities of key enzymes in infected and uninfected regions of the cotyledon, and second by histochemical techniques applied to tissue prints of the infected region. A series of progressive metabolic changes occurs within the expanding infected lesion. Virus replication and the synthesis of viral protein at the periphery creates a strong sink demand associated with increased activities of anaplerotic enzymes, increased photosynthesis, and starch accumulation. Inside the lesion, when the synthesis of virus has declined, photosynthesis is reduced, starch is mobilized, and the emphasis of metabolism is shifted toward glycolysis and mitochondrial respiration. These changes are associated spatially with the onset of chlorosis. A decrease in total protein synthesis in this inner zone could be instrumental in some or all of these changes, leading to symptoms of viral infection.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=160966Documentos Relacionados
- Complex Spatial Responses to Cucumber Mosaic Virus Infection in Susceptible Cucurbita pepo Cotyledons
- Characterization of a satellite RNA associated with strain K8 of cucumber mosaic virus.
- Cucumber Mosaic Virus Infection Affects Sugar Transport in Melon Plants1
- Nucleotide sequence of a new satellite RNA of cucumber mosaic virus.
- Biological properties of pseudorecombinant and recombinant strains created with cucumber mosaic virus and tomato aspermy virus.
