Fig. 5.

Localization of CBSV-Mo83 RNA in cross-sections of cassava petioles. Petiole sections from healthy control plants (a, b); sections from CBSV-Mo83-infected cassava (c-h). Red dots indicate hybridization of probes to viral RNA. Open squares indicate areas with hybridization signals (c-f), shown in lower panels (g, h) at a higher magnification. Accumulation of red dots is mostly evident in phloematic tissues. Signal clusters were also detected (h). Sections diameter: ~ 1.5 mm