Translocation of Photosynthate in Curly Top Virus-infected Tomatoes 1
AUTOR(ES)
Panopoulos, N. J.
RESUMO
Photosynthate translocation in single leaflets of healthy and curly top virus-infected tomatoes was investigated using 14C as a marker. The amount of radioactivity found in plant parts not exposed to 14CO2 was substantially lower in diseased than in healthy plants. The time lag for the appearance of 14C in the petiole was considerably longer in the infected plants than in the healthy. The kinetics of disappearance of 14C from the lamina during the 24-hour period following labeling showed a strong retention of recent assimilates within the diseased leaf, not accompanied by increased immobilization into insoluble forms. Sucrose was the predominant compound participating in photosynthate transport in both healthy and diseased leaves. The amount of 14CO2 fixed was approximately 40% lower in curly top virus-infected leaves than in healthy leaves.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=366122Documentos Relacionados
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