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Wheat Streak Mosaic Virus‐induced Cytoplasmic Expansion and Membrane Proliferation
Author(s) -
Gao JianGuo,
Nassuth A.
Publication year - 1994
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1994.tb00009.x
Subject(s) - cytoplasm , biology , endoplasmic reticulum , organelle , membrane , ribosome , chloroplast , myelin , microbiology and biotechnology , vesicle , ultrastructure , cytoplasmic inclusion , virology , biochemistry , rna , anatomy , central nervous system , neuroscience , gene
The cytoplasmic volume of wheat streak mosaic virus‐infected cells was significantly greater than that of cells in healthy control tissue. Ultrastructural examination revealed that mainly cellular membranes and ribosomes filled the expanded cytoplasm. Imperfectly spherical inclusions, containing continuous endoplasmic reticulum membranes at the periphery and a mixture of membranes and ribosomes in the centre, were observed near nuclei at early infection stages. The inclusions became larger as infection progressed. Membranes and ribosomes proliferated also throughout the cell, forming a matrix in which organelles and various cytopathic structures were enclosed. Numerous vesicles were observed in the cytoplasm of other WSMV‐infected cells. Multi‐layered membrane bodies were found at later infection stages. Virus particles were present in the central space of these myelin‐like structures. The presence of apparently intermediate stages in myelin‐like structure development in chloroplasts suggest that at least some of the myelin‐like structures originated from the chloroplasts.