CENTRE FOR BIOIMAGING, ROTHAMSTED RESEARCH / SCIENCE PHOTO LIBRARY CENTRE FOR BIOIMAGING, ROTHAMSTED RESEARCH / SCIENCE PHOTO LIBRARY
Beet yellows virus. Coloured transmission electron micrograph (TEM) of virus particles (virions) of the beet yellows virus (BYV). This plant virus is a closterovirus, and has an RNA (ribonucleic acid) genome. It was first identified in 1936 in the beet plant (Beta vulgaris), a plant cultivated as a food crop. Symptoms are yellowing of the leaves. The virus is transmitted by several species of aphids. Magnification: x67,000 when printed 10cm high.
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