Ocurrence of pepper yellow mosaic virus and cucumber mosaic virus on Capsicum chinense in the state of Amazonas, Brazil

Ocorrência do pepper yellow mosaic virus e cucumber mosaic virus em Capsicum chinense no estado do Amazonas, Brasil

Leonor Cristina Silva SOUZA Rogerio Eiji HANADA Luiz Alberto Guimarães ASSIS Viviana M. CAMELO-GARCÍA Jorge Alberto Marques REZENDE Valdir A. YUKI Elliot W. KITAJIMA About the authors

ABSTRACT

The habanero chilli pepper, Capsicum chinense is an important crop in the Amazon Basin, mainly grown by small-scale producers. Capsicum chinense plants in an experimental field in the northern Brazilian state of Amazonas were found exhibiting characteristic symptoms of viral infection. Leaf sap from symptomatic plants examined under a transmission electron microscope revealed the presence of elongated flexuous particles and isometric particles. Using molecular assays, the viruses were identified as pepper yellow mosaic virus (PepYMV) and cucumber mosaic virus (CMV). Aphids, identified as Aphis gossypii, were found colonizing the C. chinense plants in the field and may be the vector for both PepYMV and CMV. We report the first occurrence of these viruses infecting C. chinense in the state of Amazonas.

KEYWORDS:
Cucumovirus; Potyvirus; transmission electron microscopy; RT-PCR; Aphis gossypii

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