Histological Study of Tobacco Thrips Feeding on Peanut Foliage
Frankliniella fusca, tobacco thrips, were caged on peanut leaflets. Leaflets were embedded in paraffin, sectioned, stained, and microscopically examined. Mouth cone imprints were visible in the epidermis and palisade tissue. Heavy salivation into the wound was observed. Feeding by larvae was less damaging than by adults Both caused scarification of the leaf surface. Because expanding leaflets are the feeding site of choice for larvae, even minor damage is visible due to growth of cells around the feeding site. Immunofluorescence of tomato spotted wilt virus in peanut leaves was attempted to correlate thrips feeding sites with virus infection sites.
KeywordsTomato Spotted Wilt Virus Tomato Spot Wilt Virus Larval Thrips Palisade Tissue Mouth Cone
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