Alterações nas estruturas celulares associadas à infecção pelo isolado "Piracicaba" do vírus do mosaico amarelo do feijoeiro

Ultrastructural changes associated with the infection by the isolate "Piracicaba" of the bean yellow mosaic virus

NOTA

Alterações nas estruturas celulares associadas à infecção pelo isolado "Piracicaba" do vírus do mosaico amarelo do feijoeiro¹

Ultrastructural changes associated with the infection by the isolate "Piracicaba" of the bean yellow mosaic virus

E. W. Kitajima; A. S. Costa²

SUMMARY

An electron microscopic study was made on the tissues of bean (Phaseolus vulgaris L.) plants, infected with the isolate "Piracicaba" of the bean yellow mosaic virus (BYMV-P). Besides the lamellar inclusions, typical of infection by viruses of the potato virus Y group, and elongated viruslike particles in the cytoplasm, two distinctive features were noticed in these tissues, not observed in those infected with other isolates of BYMV: (a) the presence of membranous inclusions, which in sections appeared as a pile of flattened, large cisternae, usually apposed onto the nuclear envelope, or as large whorled structure. They are similar to membranous structures found associated with the infection with two Brazilian strains of the potato virus Y; (b) hypertrophied mitochondria, 2-4 µm in diameter, in some of the infected cells.

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Recebido para publicação em 15 de fevereiro de 1974.

1

Este trabalho recebeu auxílio financeiro da Fundação de Amparo à Pesquisa do Estado de São Paulo (C. Agron. 72/376) e do Conselho Nacional de Pesquisas CTC 12275).

2

Com bolsas de suplementação do CNPq.

Datas de Publicação

• Publicação nesta coleção
  10 Mar 2009
• Data do Fascículo
  1974