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plant virus, whitefly, volatile, vector

Alberto Fereres, Maria Fernanda G V Peñaflor, Carla F Favaro, Kamila E X Azevedo, Carolina H Landi, Nathalie K P Maluta, José Mauricio S Bento, Joao R S Lopes
Virus infection frequently modifies plant phenotypes, leading to changes in behaviour and performance of their insect vectors in a way that transmission is enhanced, although this may not always be the case. Here, we investigated Bemisia tabaci response to tomato plants infected by Tomato chlorosis virus (ToCV), a non-circulative-transmitted crinivirus, and Tomato severe rugose virus (ToSRV), a circulative-transmitted begomovirus. Moreover, we examined the role of visual and olfactory cues in host plant selection by both viruliferous and non-viruliferous B...
2016: Viruses
Kim Y Hung, Themis J Michailides, Jocelyn G Millar, Astri Wayadande, Alec C Gerry
House flies are of major concern as vectors of food-borne pathogens to food crops. House flies are common pests on cattle feedlots and dairies, where they develop in and feed on animal waste. By contacting animal waste, house flies can acquire human pathogenic bacteria such as Escherichia coli and Salmonella spp., in addition to other bacteria, viruses, or parasites that may infect humans and animals. The subsequent dispersal of house flies from animal facilities to nearby agricultural fields containing food crops may lead to pre-harvest food contamination with these pathogens...
2015: PloS One
Roopa H K, Rebijith K B, Asokan R, Riaz Mahmood, Krishna Kumar N K
Bemisia tabaci (G.) is an important pest and a vector of Gemini viruses infecting plants. During the process of feeding B. tabaci excretes honeydew which is rich in nutrients, and an excellent medium for microbial growth. Recent report proved that volatile emitted by the honeydew associated bacteria of aphid, Acyrthosiphon pisum Harris was involved in natural enemy calling. Thus understanding the honeydew associated bacteria is of paramount importance from the non-chemical method of insect pest management. In this perspective, very less information is available on bacteria associated with the honeydew excreted by B...
December 2014: Meta Gene
Yong Fang, Xiaoguo Jiao, Wen Xie, Shaoli Wang, Qingjun Wu, Xiaobin Shi, Gong Chen, Qi Su, Xin Yang, Huipeng Pan, Youjun Zhang
Bemisia tabaci, the whitefly vector of Tomato yellow leaf curl virus (TYLCV), seriously reduces tomato production and quality. Here, we report the first evidence that infection by TYLCV alters the host preferences of invasive B. tabaci B (Middle East-Minor Asia 1) and Q (Mediterranean genetic group), in which TYLCV-free B. tabaci Q preferred to settle on TYLCV-infected tomato plants over healthy ones. TYLCV-free B. tabaci B, however, preferred healthy tomato plants to TYLCV-infected plants. In contrast, TYLCV-infected B...
2013: Scientific Reports
Lucie Salvaudon, Consuelo M De Moraes, Jun-Yi Yang, Nam-Hai Chua, Mark C Mescher
Tomato Yellow Leaf Curl China virus spreads together with its invasive vector, the silverleaf whitefly B biotype, which exhibits higher growth rates on infected plants. Previous studies indicate that the virus satellite gene βC1 accounts for the visible symptoms of infection and inhibits the constitutive expression of jasmonic acid (JA)--a phytohormone involved in plant defense against whiteflies--and of some JA-regulated genes. Here we present new details of the effects of on plant signaling and defense, obtained with (non-host) transgenic Arabidopsis thaliana and Nicotiana benthamiana plants...
March 2013: Plant Signaling & Behavior
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