2017:groups:g2:start
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- | * Juliana Berbert | + | |
** Group 2 ** | ** Group 2 ** | ||
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===== Introduction ===== | ===== Introduction ===== | ||
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Disease caused by whitefly-transmitted begomoviruses are problematic in many tropical and subtropical world regions and cause heavy losses in food and fiber crops grown there. | Disease caused by whitefly-transmitted begomoviruses are problematic in many tropical and subtropical world regions and cause heavy losses in food and fiber crops grown there. | ||
- | The whitefly, Bemisia tabaci, has several biotypes, but the B biotype is responsible for spreading plant diseases, since it has many plants species as natural hosts including weeds. | + | The whitefly, |
+ | It has several biotypes, but the B biotype is the one responsible for spreading plant diseases, since it has many plants species as natural hosts, including weeds. | ||
+ | |||
+ | The begomoviruses includes the Tomato Severe Rugose Virus (TSRV), which is manifested in the infected plant as yellow mosaic or mottling leaf distortions, | ||
- | The begomoviruses includes the Tomato Severe Rugose Virus (TSRV), which is manifested in the infected plant as yellow mosaic or mottling, leaf distortion and crinkling and stunting. | ||
[[http:// | [[http:// | ||
- | To control the disease, it is recommended to keep a plant-free period, in order to diminish the whitefly population. | + | The transmission occurs after the whitefly reaches the phloem of an infected plant and later reaches the phloem of a healthy plant. |
===== Assignment ===== | ===== Assignment ===== | ||
- | Develop a mathematical model combining epidemiological and ecological dynamics that describes the interaction between whiteflies, tomatoes and the disease. Use it to understand the ecological and epidemiological consequences | + | Develop a mathematical model combining epidemiological and ecological dynamics that describes the interaction between whiteflies, tomatoes and the disease. Use it to understand the ecological and epidemiological consequences of TSRV. |
===== Questions & Suggestions ===== | ===== Questions & Suggestions ===== | ||
- | Model the dynamic of the whitefly using three lifecycle | + | * Whiteflies' |
- | Combine it with the disease | + | * Both the whitefly and the plant present latency periods between acquiring the virus and becoming infectious, This can be neglected for a first analysis. |
- | * Is it really necessary to clear fields before new plantings | + | * Is it really necessary to clear fields before new plantings? |
* Or is it better to increase the time between plantings? | * Or is it better to increase the time between plantings? | ||
- | * This whitefly species is also a disease vector for other plants, like potatoes, how can your model give us hint on other agricultural problems | + | |
+ | | ||
===== References ===== | ===== References ===== | ||
Barbosa, J.C., Rezende, J.A. and Amorim, L., 2016. Temporal dynamics of Tomato severe rugose virus and Bemisia tabaci in tomato fields in São Paulo, Brazil. Journal of Phytopathology, | Barbosa, J.C., Rezende, J.A. and Amorim, L., 2016. Temporal dynamics of Tomato severe rugose virus and Bemisia tabaci in tomato fields in São Paulo, Brazil. Journal of Phytopathology, | ||
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+ | ===== Results ===== | ||
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+ | * [[http:// | ||
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2017/groups/g2/start.1481718534.txt.gz · Last modified: 2024/01/09 18:45 (external edit)