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Ultrastructural studies of resting spore development in Polymyxa graminis

Published online by Cambridge University Press:  01 June 1998

JIANPING CHEN
Affiliation:
Virology Department, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, People's Republic of China
ZHIQIANG WANG
Affiliation:
Virology Department, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, People's Republic of China
JIAN HONG
Affiliation:
Electron Microscope Laboratory, Zhejiang Agricultural University, Hangzhou 311029, People's Republic of China
C. REBECCA COLLIER
Affiliation:
Crop and Disease Management Department, IACR-Rothamsted, Harpenden, Herts, AL5 2JQ, U.K.
MICHAEL J. ADAMS
Affiliation:
Crop and Disease Management Department, IACR-Rothamsted, Harpenden, Herts, AL5 2JQ, U.K.
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Abstract

Transmission electron microscopy was used to study the development and structure of resting spores and sporosori of Polymyxa graminis. Osmiophilic bodies generally distributed in the cytoplasm moved to the periphery as spores matured. The spore wall consisted of four or five layers, two of which extended into spines linking adjacent spores. An unstained plug in the wall, faced towards the outside of the sporosorus. Some spores germinated in situ by producing primary zoospores. Bundle-like structures in some spores may have been barley yellow mosaic virus particles.

Type
Research Article
Copyright
© The British Mycological Society 1998

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