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Your Position :Home->Past Journals Catalog->2014年51 No.1

Olfactory responses of the whitefly Bemisia tabaci and its parasitoid Eretmocerus hayati to tobacco infected by theTomato yellow leaf curl Chinavirus
Author of the article:PAN Deng1, 2 , LI Yuan-Xi2 , LUAN Jun-Bo1 , LIU Shu-Sheng1 , LIU Yin-Quan1**
Author's Workplace:1. Key Laboratory of Agricultural Entomology of Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China; 2. Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, Chi
Key Words: Tomato yellow leaf curlChinavirus, Bemisia tabaci, Eretmocerus hayati, olfactory response, plant-virus-vector-natural enemy interactions
Abstract:

         Begomoviruses can manipulate host plants to promote the population growth of the whitefly vector Bemisia tabaci (Gennadius). However, olfactory responses of the whitefly and its parasitoids to virus-infected plants have not been explored. [Objectives and Methods]  In this study, we used a Y shape olfactometer to investigate the influence of the Tomato yellow leaf curl China virus (TYLCCNV) on olfactory responses of the whitefly and its parasitoid, Eretmocerus hayati (Zolnerowich and Rose). [Results and Conclusion]  The results show that B. tabaci and its parasitoid preferred TYLCCNV-infected tobacco plants to non-viruliferous plants. However, this preference declined somewhat when tobacco plants were simultaneously infested by the virus and the whitefly. To our knowledge, this is the first evidence that begomovirus-infection can increase the attractiveness of plants to both the virus vector B. tabaci and this vector’s parasitoid. The function and mechanisms of this attraction are discussed.

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