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Figure 1 | Virology Journal

Figure 1

From: Beet necrotic yellow vein virus accumulates inside resting spores and zoosporangia of its vector Polymyxa betae BNYVV infects P. betae

Figure 1

(A) Diagrammatic representation of the BNYVV genomes. Lines represent four genomic segments. Boxes represent coding regions. RNA2 is multicistronic. The 3' ORFs (P42, P13, P15, P14) are expressed from subgenomic RNAs. The names for each coding sequence are provided above the boxes. (B) Schematic of the P. betae life cycle. This shows the most significant developmental stages relating to this study. (C) Depiction of two models for virus transfer between plant cells and zoospores. Zoospore contains virus (black spheres) in the cytoplasm. Virus is transferred into vesicles (grey sphere, hemisphere), released to the exterior of the zoospore and then move into the plant cell through a break in the zoosporangial wall. These vesicles may be centers for virus replication or may be transport vesicles containing movement complexes or virions. In reverse, virus is acquired from an infected plant cell through a break in the zoosporangial wall. Virus is taken into the zoospore by pinocytosis. Particles may disassemble and be released into the zoospore cytoplasm for translation and replication.

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