Beet Necrotic Yellow Vein Virus (Benyvirus BNYVV) in Pests not Known to Occur in North America

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Leaf showing symptoms of systemic infection with Rhizomania

Oliver T. Neher, The Amalgamated Sugar Company, Bugwood.org

Leaf showing symptoms of systemic infection with Rhizomania

Root symptoms of Rhizomania. Excessive proliferation of secondary roots

Oliver T. Neher, The Amalgamated Sugar Company, Bugwood.org

Root symptoms of Rhizomania. Excessive proliferation of secondary roots

Characteristic rootlet proliferation, or rhizomania, due to beet necrotic yellow vein furovirus in sugar beet.

Institut Technique de la Betterave , Bugwood.org

Characteristic rootlet proliferation, or rhizomania, due to beet necrotic yellow vein furovirus in sugar beet.

Longitudinal section of sugar beet root infected by beet necrotic yellow vein furovirus, showing browning of the vascular tissues.

Institut Technique de la Betterave , Bugwood.org

Longitudinal section of sugar beet root infected by beet necrotic yellow vein furovirus, showing browning of the vascular tissues.

Systemic symptoms of beet necrotic yellow vein furovirus infection on sugar beet leaves.

Institut Technique de la Betterave , Bugwood.org

Systemic symptoms of beet necrotic yellow vein furovirus infection on sugar beet leaves.

Beet necrotic yellow vein furovirus: abnormal root development (rhizomania) in beet.

European and Mediterranean Plant Protection Organization , Bugwood.org

Beet necrotic yellow vein furovirus: abnormal root development (rhizomania) in beet.

Sugar beet showing symptoms of Rhizomania, caused by Beet Necrotic Yellow Vein Virus (BNYVV), vectored by the soilborne fungus <em>Polmyxa betae.</em>

William M. Brown Jr., Bugwood.org

Sugar beet showing symptoms of Rhizomania, caused by Beet Necrotic Yellow Vein Virus (BNYVV), vectored by the soilborne fungus Polmyxa betae.

Sugar beet sliced open to show vascular discoloration characteristic of Rhizomania, caused by Beet Necrotic Yellow Vein Virus (BNYVV), vectored by the soilborne fungus <em>Polmyxa betae.</em>

William M. Brown Jr., Bugwood.org

Sugar beet sliced open to show vascular discoloration characteristic of Rhizomania, caused by Beet Necrotic Yellow Vein Virus (BNYVV), vectored by the soilborne fungus Polmyxa betae.

Two rows of sugar beet plants pulled to show symptoms of Rhizomania (caused by Beet Necrotic Yellow Vein Virus), with a resistant variety on the right.

William M. Brown Jr., Bugwood.org

Two rows of sugar beet plants pulled to show symptoms of Rhizomania (caused by Beet Necrotic Yellow Vein Virus), with a resistant variety on the right.

Root symptoms of Rhizomania. Wineglass shaped root

Oliver T. Neher, The Amalgamated Sugar Company, Bugwood.org

Root symptoms of Rhizomania. Wineglass shaped root

Foliar symptoms of Rhizomania. Leaves to the left and right showing varying degrees of yellowing caused by Rhizomania

Oliver T. Neher, The Amalgamated Sugar Company, Bugwood.org

Foliar symptoms of Rhizomania. Leaves to the left and right showing varying degrees of yellowing caused by Rhizomania

Foliar symptoms of Rhizomania. Left plant healthy. Right plant infected with Beet necrotic yellow vein virus and showing typical symptoms of bright fluorescence green foliage.

Oliver T. Neher, The Amalgamated Sugar Company, Bugwood.org

Foliar symptoms of Rhizomania. Left plant healthy. Right plant infected with Beet necrotic yellow vein virus and showing typical symptoms of bright fluorescence green foliage.