Photosynthate translocation in single leaflets of healthy and curly top virus-infected tomatoes was investigated using (14)C as a marker. The amount of radioactivity found in plant parts not exposed to (14)CO(2) was substantially lower in diseased than in healthy plants. The time lag for the appearance of (14)C in the petiole was considerably longer in the infected plants than in the healthy. T...

Geminiviruses cause curly top disease, in dicotyledonous plants which constrains host crop production. Beet curly top Iran virus (BCTIV) is a widespread Becurtovirus (family Geminiviridae) in numerous areas within Iran. In this study, we isolated and analyzed a full-length genomic DNA of a new variant of BCTIV from pepper crops in the Kaftark region, east of Shiraz (proposed acronym: BCTIV-Kaf ...

The geminiviruses are a group of plant viruses containing single-stranded (ss) DNA in particles comprising two quasi-icosahedral units. Some are transmitted by whiteflies, others by leafhoppers. Comparisons were made of the genome organization and expression of cassava latent virus (CLV) and maize streak virus (MSV) and beet curly top virus (BCTV), each with distinct host range and insect vecto...