English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/11467
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Correlation Between Whitefly (Homoptera: Aleyrodidae) Feeding Behavior and Transmission of Tomato Yellow Leaf Curl Virus

AuthorsJiang, Y-X.; Blas, C. de; Barrios, Laura ; Fereres, Alberto
KeywordsBemisia tabaci
Feeding behavior
Tomato yellow leaf curl virus
Issue DateMay-2000
PublisherEntomological Society of America
CitationAnnals of the Entomological Society of America 93(3):573-579. 2000
AbstractThe feeding behavior of the whitefly Bemisia tabaci (Gennadius) was monitored using the electrical penetration graph (EPG) technique during the transmission process of tomato yellow leaf curl geminivirus (TYLCV). The behavior of individual viruliferous whiteflies was recorded on two-leaf stage tomato test plants (Lycopersicon esculentum Mill ‘Riofuego’). A total of 213 whitefly individuals was recorded on single test plants during an inoculation access period that ranged from 3.5 to 14 h. Recordings were classified into 4 categories depending of the waveforms observed: group I, including only waveform C (pathway), was associated with a residual 2.4% TYLCV transmission efficiency; group II, showing stylet pathway and a single E(pd)1 waveform, was associated with a 7.4% transmission efficiency; group III, showing stylet pathway and a single E(pd)1 + E(pd)2 waveform, achieved a 23.4% transmission efficiency; and finally group IV, showing pathway followed by several E(pd)1 + E(pd)2 waveforms, was associated with the highest transmission efficiency (37.5%). A total of 16 different behavioral variables was introduced into a stepwise-backward logistic regression model to determine the variables most related to TYLCV inoculation. Among them, the total duration of E(pd)1 was the most significant variable associated with virus inoculation by B. tabaci (P = 0.002, positive relationship). In addition, the regression analysis indicated a strong positive relationship (P = 0.005) between transmission efficiency and total number of E(pd)1 (t = 4.39, β = 0.45 ± 0.10, r = 0.87), and total duration of waveform E(pd)1 (P = 0.05) (t = 4.00, β = 0.02 ± 0.004, r = 0.94). The minimum phloem contact E(pd)1 threshold period observed for successful inoculation of TYLCV by B. tabaci on tomato plants was 1.8 min. Implications of these results for persistent virus transmission by whiteflies are discussed.
Publisher version (URL)http://dx.doi.org/10.1603/0013-8746(2000)093[0573:CBWHAF]2.0.CO;2
Appears in Collections:(ICA) Artículos
(SGAI) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.