Interactions Between Cassava Mosaic Geminiviruses and Their Vector, Bemisia tabaci (Hemiptera: Aleyrodidae)
The sweetpotato whitefly, Bemisia tabaci (Gennadius) is the vector of the cassava mosaic geminiviruses (CMGs) that cause cassava mosaic disease (CMD). Synergistic interactions between B. tabaci and CMGs have been hypothesized as a cause of whitefly “super-abundance,” which has been a key factor behi...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Oxford University Press
2017
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| Acceso en línea: | https://hdl.handle.net/10568/88248 |
| _version_ | 1855539001443745792 |
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| author | Boni, S.B. Rugumamu, C.P. Gerling, D. Nokoe, K.S. Legg, James P. |
| author_browse | Boni, S.B. Gerling, D. Legg, James P. Nokoe, K.S. Rugumamu, C.P. |
| author_facet | Boni, S.B. Rugumamu, C.P. Gerling, D. Nokoe, K.S. Legg, James P. |
| author_sort | Boni, S.B. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The sweetpotato whitefly, Bemisia tabaci (Gennadius) is the vector of the cassava mosaic geminiviruses (CMGs) that cause cassava mosaic disease (CMD). Synergistic interactions between B. tabaci and CMGs have been hypothesized as a cause of whitefly “super-abundance,” which has been a key factor behind the spread of the severe CMD pandemic through East and Central Africa. The current study investigated this hypothesis by conducting experiments with CMD-susceptible cassava varieties infected with different CMGs in both the north-western Lake Zone region (pandemic affected) and the eastern Coast Zone where CMD is less severe. Male and female pairs of B. tabaci were placed in clip cages for 48 h on plants of three cassava varieties at each of the two locations. There were significantly more eggs laid on CMG-infected than on CMG-free plants in the Lake Zone, whereas in Coast Zone, there were no significant differences. There were no significant differences in proportions, mortality, and development duration of immature stages of B. tabaci among virus states and cassava variety in the two locations. The overall number of eggs was significantly higher with longer development duration of the immature stages in the Lake than in the Coast Zone, whereas mortality was significantly higher in the Coast than in the Lake Zone. Based on these results, it is concluded that there was no net positive synergistic interaction between CMGs and B. tabaci for either lowland coastal or mid-altitude inland populations. Consequently, other factors seem more likely to be the cause of the “super-abundance,” and require further investigation. |
| format | Journal Article |
| id | CGSpace88248 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace882482023-12-08T19:36:04Z Interactions Between Cassava Mosaic Geminiviruses and Their Vector, Bemisia tabaci (Hemiptera: Aleyrodidae) Boni, S.B. Rugumamu, C.P. Gerling, D. Nokoe, K.S. Legg, James P. bemisia tabaci cassava african cassava mosaic virus geminiviruses development duration sweetpotato whitefly The sweetpotato whitefly, Bemisia tabaci (Gennadius) is the vector of the cassava mosaic geminiviruses (CMGs) that cause cassava mosaic disease (CMD). Synergistic interactions between B. tabaci and CMGs have been hypothesized as a cause of whitefly “super-abundance,” which has been a key factor behind the spread of the severe CMD pandemic through East and Central Africa. The current study investigated this hypothesis by conducting experiments with CMD-susceptible cassava varieties infected with different CMGs in both the north-western Lake Zone region (pandemic affected) and the eastern Coast Zone where CMD is less severe. Male and female pairs of B. tabaci were placed in clip cages for 48 h on plants of three cassava varieties at each of the two locations. There were significantly more eggs laid on CMG-infected than on CMG-free plants in the Lake Zone, whereas in Coast Zone, there were no significant differences. There were no significant differences in proportions, mortality, and development duration of immature stages of B. tabaci among virus states and cassava variety in the two locations. The overall number of eggs was significantly higher with longer development duration of the immature stages in the Lake than in the Coast Zone, whereas mortality was significantly higher in the Coast than in the Lake Zone. Based on these results, it is concluded that there was no net positive synergistic interaction between CMGs and B. tabaci for either lowland coastal or mid-altitude inland populations. Consequently, other factors seem more likely to be the cause of the “super-abundance,” and require further investigation. 2017-06 2017-10-11T09:30:52Z 2017-10-11T09:30:52Z Journal Article https://hdl.handle.net/10568/88248 en Open Access Oxford University Press Boni, S.B., Rugumamu, C.P., Gerling, D., Nokoe, K.S. & Legg, J.P. (2017). Interactions between cassava mosaic geminiviruses and their vector, Bemisia tabaci (Hemiptera: Aleyrodidae). Journal of Economic Entomology, 110(3), 884-892. |
| spellingShingle | bemisia tabaci cassava african cassava mosaic virus geminiviruses development duration sweetpotato whitefly Boni, S.B. Rugumamu, C.P. Gerling, D. Nokoe, K.S. Legg, James P. Interactions Between Cassava Mosaic Geminiviruses and Their Vector, Bemisia tabaci (Hemiptera: Aleyrodidae) |
| title | Interactions Between Cassava Mosaic Geminiviruses and Their Vector, Bemisia tabaci (Hemiptera: Aleyrodidae) |
| title_full | Interactions Between Cassava Mosaic Geminiviruses and Their Vector, Bemisia tabaci (Hemiptera: Aleyrodidae) |
| title_fullStr | Interactions Between Cassava Mosaic Geminiviruses and Their Vector, Bemisia tabaci (Hemiptera: Aleyrodidae) |
| title_full_unstemmed | Interactions Between Cassava Mosaic Geminiviruses and Their Vector, Bemisia tabaci (Hemiptera: Aleyrodidae) |
| title_short | Interactions Between Cassava Mosaic Geminiviruses and Their Vector, Bemisia tabaci (Hemiptera: Aleyrodidae) |
| title_sort | interactions between cassava mosaic geminiviruses and their vector bemisia tabaci hemiptera aleyrodidae |
| topic | bemisia tabaci cassava african cassava mosaic virus geminiviruses development duration sweetpotato whitefly |
| url | https://hdl.handle.net/10568/88248 |
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