Solanum americanum: reservoir for Potato virus Y and Cucumber mosaic virus in sweet pepper crops

  • Moura M
  • Soman M
  • Mituti T
  • et al.
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Abstract

Weeds can act as important reservoirs for viruses. Solanum americanum (Black nightshade) is a common weed in Brazil and samples showing mosaic were collected from sweet pepper crops to verify the presence of viruses. One sample showed mixed infection between Cucumber mosaic virus (CMV) and Potato virus Y (PVY) and one sample showed simple infection by PVY. Both virus species were transmitted by plant extract and caused mosaic in tomato (Solanum lycopersicum cv. Santa Clara), sweet pepper (Capsicum annuum cv. Magda), Nicotiana benthamiana and N. tabaccum TNN, and local lesions on Chenopodium quinoa, C. murale and C. amaranticolor. The coat protein sequences for CMV and PVY found in S. americanum are phylogenetically more related to isolates from tomato. We conclude that S. americanum can act as a reservoir for different viruses during and between sweet pepper crop seasons.As plantas daninhas podem atuar como importantes reservatórios de vírus. Solanum americanum (Maria Pretinha) é uma planta daninha comum no Brasil e amostras com mosaico foram coletadas em áreas produtoras de pimentão, para verificar a presença de vírus. Uma amostra apresentou infecção mista com Cucumber mosaic virus (CMV) e Potato virus Y (PVY) e uma amostra apresentou infecção simples com PVY. As duas espécies virais foram transmitidas por extrato vegetal e ocasionaram mosaico em tomate (Solanum lycopersicum cv. Santa Clara), pimentão (Capsicum annuum cv. Magda), Nicotiana benthamiana e N. tabaccum TNN, lesões locais em Chenopodium quinoa, C. murale e C. amaranticolor. As sequências de proteína capsidial para o CMV e PVY encontradas em S. americanum estão filogeneticamente mais relacionadas com isolados de tomate. Conclui-se que S. americanum pode atuar como reservatório de diferentes vírus, durante e entre as épocas de cultivo de pimentão.

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APA

Moura, M. F., Soman, M., Mituti, T., Pavan, M. A., & Krause-Sakate, R. (2014). Solanum americanum: reservoir for Potato virus Y and Cucumber mosaic virus in sweet pepper crops. Summa Phytopathologica, 40(1), 78–80. https://doi.org/10.1590/s0100-54052014000100012

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