Degeneration of sieve element plastids in sugar beet infected with curly top virus |
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| Authors: | L L Hoefert K Esau |
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| Affiliation: | 1. Department of Plant and Microbial Biology, North Carolina State University, Raleigh NC, 27695, USA;2. Department of Horticulture, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya;3. Department of Entomology and Plant Pathology, North Carolina State University, Raleigh NC, 27695, USA;4. Mikocheni Agricultural Research Institute, Dar es Salaam, Tanzania;5. Department of Molecular and Structural Biochemistry, North Carolina State University, Polk Hall 132, Box 7622, NCSU Campus, Raleigh NC, 27695, USA |
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| Abstract: | Plastids in sieve elements of sugar beet (Beta vulgaris L.) infected with curly top virus show ultrastructural changes, particularly in vascular bundles from older leaves. These changes include compaction of internal membranes, disruption of the proteinaceous fibrous band, and appearance of rodlike structures, granular material, and large amounts of osmiophilic material. Ultrastructural changes in sieve element plastids indicate that the curly top virus is detrimental to the sieve elements in which it moves. |
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