Fitopatologia Brasileira (2003) 28, 664-673

Carmem D.G. Santos, Antonio C. de Ávila and Renato de O. Resende (2003)
Estudo da interação de um begomovírus isolado de tomateiro com a mosca branca
[Studies of the interaction of a new begomovirus isolate from tomato with a whitefly]
Fitopatologia Brasileira 28 (6), 664-673
Abstract: A begomovirus named GO-ANPL (taxonomically related to the Tomato rugose mosaic virus, ToRMV), obtained from tomato (Lycopesricon esculentum) plants in Anápolis, state of Goiás, was used to study virus/vector (Bemisia tabaci biotype B) interaction. The acquisition access period (AAP), the inoculation access period (IAP), and the latent period (LP) were determined by transferring five whiteflies per tomato seedling cv. Santa Clara. The minimum AAP was 15 min resulting in 6% infected plants, which reached 65% as the length of AAP increased to 24 h. At a minimum IAP of 30 min, 18% of plants were infected; this increased to 67% after an IAP of 24 h. The end of the LP in the vector occurred 16 h after virus acquisition. To detect the GO-ANPL in the vector by PCR, more than 2,500 specimens were tested. The virus was found in adults under different AAPs from the 1^st to the 4^th instar grown on infected plants. No virus was found in the eggs that were laid on infected plants by aviruliferous females. The GO-ANPL isolate was transmitted to the progeny of viruliferous females, since the virus was detected in eggs, all instars and adults. However, no virus transmission was observed from these adults. A high frequency of viral detection was observed in newly emerged adults from immature forms reared on virus-infected plants. These adults infected 33% of tomato plants in virus transmission assays. The results indicate that the interaction between begomovirus and B. tabaci biótipo B starts at early stages of insect development. This is important information for epidemiological studies of begomovirus in this country.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
transmission/dispersal of plant diseases

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bemisia tabaci biotype MEAM1
	Begomovirus (genus)