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Digitale Medien

Mycoplasmas as Plant Pathogens: Perspectives and Principles (1972)

Hampton, R O

Palo Alto, Calif. : Annual Reviews

Annual Review of Plant Physiology 23 (1972), S. 389-418

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ISSN: 0066-4294

Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff

Thema: Biologie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1146/annurev.pp.23.060172.002133

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Digitale Medien

Ultrastructural cytology of pea leaves and roots infected by pea seedborne mosaic virus (1973)

Hampton, R. O. ; Phillips, Sandra ; Knesek, J. E. ; [weitere]

Springer

Archives of virology 42 (1973), S. 242-253

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ISSN: 1432-8798

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary Eleven isolates of pea seedborne mosaic virus (PSbMV) from U.S. seedlots were compared by thin-section electron microscopy to appraise the cytopathological diversity among isolates. Nine isolates uniformly induced formation of typical pinwheel inclusions, two of these also inducing tonoplast aggregates (TA) in a few cells. One isolate produced principally TA, accompanied in a few cells by pinwheel inclusions. The remaining isolate induced formation of dense bodies and laminated aggregates like those reported for bean yellow mosaic virus (Kamei et al., 1969). Other cytological abnormalities induced by one or more PSbMV isolates included extensive masses of convoluted endoplasmic reticulum, aggregates of viruslike particles, and crystalline inclusions consisting of ultrastructural hexagons. Symptoms induced by the eleven isolates in seedlings from which they originated fell within the range previously reported for this virus (Hampton, 1972). Root parenchyma cells from PSbMV-infected plants contained few inclusions, but instead contained extensive masses of viruslike particles that occupied most of the cytoplasmic volume in some cells. Samples of purified virus prepared separately from infected root and leaf tissues were morphologically indistinguishable.