References of "Yong, Liu"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailIdentification of lectins as virus competitors in aphid vectors: from fundamental to applied approaches
Bosquée, Emilie ULg; Chen, Ju Lian; Yong, Liu et al

Poster (2014, August)

Aphids remain difficult virus vectors to be controlled in many crops. Within this context of biological control against aphids and investigation on virus transmission (both non persistent Potato virus Y ... [more ▼]

Aphids remain difficult virus vectors to be controlled in many crops. Within this context of biological control against aphids and investigation on virus transmission (both non persistent Potato virus Y (PVY) and Cucumber Mosaic Virus (CMV) and persistent Barley Yellow Dwarf Virus, the use of lectins was developed. Indeed, the effects of lectin binding to glycoprotein aphid receptors on virus transmission were tested in laboratory via the use of artificial diets using different virus models. Differential effects on virus transmission efficiency were determined. By example, a strong interference between GNA and PVY was observed. In consequence, the lectin was considered as promising proteins and could be potential competitors to virus. For further research, a fast protein liquid chromatography was performed to identify aphid proteins related to binding to efficient lectin competitors. Moreover, to detect involved proteins in aphids, two-dimensional gel electrophoresis approach coupled to mass spectrometry was developped to identify the glycosylated proteins determining virus transmission efficiency. Use of lectins for both fundamental and applied approaches were discussed to investigate aphid – virus interactions [less ▲]

Detailed reference viewed: 5 (1 ULg)
Full Text
See detailEvaluation of the aphid and aphidophagous beneficials diversity in a pea and potato association
Bosquée, Emilie ULg; Chevalier Mendes Lopes, Thomas ULg; Serteyn, Laurent et al

Poster (2014, May 20)

Crop associations can have beneficial effects on the control of insect pests. This study was conducted in the Shandong province (China) to assess the impact of potatoes and peas association on the ... [more ▼]

Crop associations can have beneficial effects on the control of insect pests. This study was conducted in the Shandong province (China) to assess the impact of potatoes and peas association on the populations of aphids and aphidophagous beneficials. Observations on potato plants and trapping were performed. During the season, the degree of infestation didn’t differ significantly between the association and the pure stand. However, the aphidophagous beneficials were more abundant in the association comparing to the pure stand. Trapping results give a more general idea about the richness and diversity of natural enemies present in the environment. Aphidius gifuensis (Ashmead) and Aphelinus abdominalis Dalman are the most abundant parasitoids. Among predators, Propylea japonica (Thunberg) and Harmonia axyridis (Pallas) are prevalent. Few hoverflies and lacewings were trapped. Results from the observations on plants do not support the resource concentration hypothesis. However, the enemy hypothesis was confirmed for the aphidophagous beneficials. Therefore, this association can have a beneficial effect on the control of aphid populations. [less ▲]

Detailed reference viewed: 13 (2 ULg)
Full Text
See detailEffects of wheat/oilseed rape and wheat/pea associations on the diversity of aphids and aphidophagous beneficials
Chevalier Mendes Lopes, Thomas ULg; Bosquée, Emilie ULg; Honba, David et al

Poster (2014, May 20)

This study was conducted in the Shandong province (China) to better characterize the effect of wheat/oilseed rape and wheat/pea associations on the populations of aphids and aphidophagous beneficials. At ... [more ▼]

This study was conducted in the Shandong province (China) to better characterize the effect of wheat/oilseed rape and wheat/pea associations on the populations of aphids and aphidophagous beneficials. At specific times of the season, the observations on wheat tillers confirm the resource concentration and the enemy hypotheses. In fact, aphids were more abundant in the pure stand of wheat, while more ladybirds were observed in the associations. As for the trapping of aphidophagous beneficials, the parasitoid species Aphidius gifuensis (Ashmead) was prevalent. Among predators, Propylea japonica (Thunberg) and Harmonia axyridis (Pallas) were the most abundant species. Few lacewings and hoverflies were trapped. This study shows a beneficial effect of crop associations on the control of aphid populations. [less ▲]

Detailed reference viewed: 15 (3 ULg)
Full Text
See detailBiological control of aphids in wheat and vegetable crops : a multi-approach case study in Shandong province (China)
Chevalier Mendes Lopes, Thomas ULg; Bosquée, Emilie ULg; Chen, Julian et al

Poster (2014, April 02)

This multi-approach study was conducted in the Shandong province (China) to assess the effectiveness of different biological control methods against aphids in wheat and vegetable crops. Three approaches ... [more ▼]

This multi-approach study was conducted in the Shandong province (China) to assess the effectiveness of different biological control methods against aphids in wheat and vegetable crops. Three approaches were tested: (1) wheat/oilseed rape and wheat/pea associations, (2) potatoes/peas association, and (3) E-β-farnesene (aphid alarm pheromone) releasers in squashes under plastic tunnels. Aphids and aphidophagous beneficials were monitored by observations on plants. Wheat associations and E-β-farnesene reduced aphid infestations compared with control treatments, while no effect was observed in the potatoes/peas association. Moreover, aphidophagous beneficials were significantly more abundant in the three kinds of associations compared with control treatments. Few individuals were observed on squashes. Additionally, adult aphidophagous beneficials were monitored using yellow pan traps. The parasitoid species Aphidius gifuensis (Ashmead) was prevalent, while Propylea japonica (Thunberg) and Harmonia axyridis (Pallas) were the most abundant species among predators. Globally, wheat associations were more efficient to reduce aphid infestations and attract aphidophagous beneficials to promote biological control. The trapping of natural enemies allowed to assess the diversity and abundance of aphidophagous species in this region. This study shows a beneficial effect of crop associations and E-β-farnesene on the control of aphid populations and contributes to assess the potentialities of these alternative methods to the use of insecticides. [less ▲]

Detailed reference viewed: 20 (4 ULg)
Full Text
Peer Reviewed
See detailEvaluation de la diversité de l’entomofaune en cultures maraîchères dans l’est de la Chine
Polo Lozano, Damien ULg; Bosquée, Emilie ULg; Chevalier Mendes Lopes, Thomas ULg et al

in Entomologie Faunistique = Faunistic Entomology (2013), 66

Within the framework of research aimed at developing biological control in vegetable crops in Shandong province in China, a pest and associated auxiliary entomophagous insects monitoring was conducted to ... [more ▼]

Within the framework of research aimed at developing biological control in vegetable crops in Shandong province in China, a pest and associated auxiliary entomophagous insects monitoring was conducted to determine entomological groups of agricultural interest and compare them to the situation in Belgium. The diversity and abundance of the entomofauna were assessed in potato and zucchini fields between May 9th and June 13th, 2011, using yellow traps and in situ observations on host plants. A total of 36 466 and 34 806 insects were trapped or observed on the plants in zucchini and potato fields, respectively. Ten orders and more than sixty families in each crop were identified. Aphids widely predominated in the traps and exerted a strong pressure on both crops early in the season. Other families of pests have been identified but no specific pest of these two crops and the investigated region is among the collections. [less ▲]

Detailed reference viewed: 125 (44 ULg)
Full Text
Peer Reviewed
See detailInfluence of Garlic Intercropping or Active Emitted Volatiles in Releasers on Aphid and Related Beneficial in Wheat Fields in China
Haibo, Zhou; Chen, Julian; Yong, Liu et al

in Journal of Integrative Agriculture (2013), 12(3)

Detailed reference viewed: 15 (0 ULg)
Full Text
Peer Reviewed
See detailVariation in the transmission of barley yellow dwarf virus-PAV bydifferent Sitobion avenae clones in China
Yu, Wenjuan; Zhaohuan, Xu; Francis, Frédéric ULg et al

in Journal of Virological Methods (2013), 194

Detailed reference viewed: 16 (1 ULg)
Full Text
Peer Reviewed
See detailEvaluation de la diversité des pucerons et de leurs ennemis naturels en cultures maraîchères dans l’est de la Chine
Chevalier Mendes Lopes, Thomas ULg; Bosquée, Emilie ULg; Polo Lozano, Damien ULg et al

in Entomologie Faunistique = Faunistic Entomology (2012), 64(3), 63-71

The aim of this study was to evaluate the diversity and abundance of aphids and aphidophagous beneficials in courgettes and potato fields in the Shandong province, East of China. The assessment of aphid ... [more ▼]

The aim of this study was to evaluate the diversity and abundance of aphids and aphidophagous beneficials in courgettes and potato fields in the Shandong province, East of China. The assessment of aphid and related beneficial populations was conducted between May 9th and June 13th, 2011, using yellow traps and in situ observations on plants. A total of 53,206 insects were trapped and 35,144 observed on the plants. Aphids widely predominated in the traps and exerted a strong pressure on both crops early in the season. Two main species were identified on the plants, namely Aphis gossypii on the courgettes and Myzus persicae on the potatoes. Ladybirds were the most abundant aphidophagous predators, especially Coccinella septempunctata on the courgettes and Propylea japonica on the potato fields, the first one being earlier than the second. Only few hoverflies and lacewings were captured. Microhymenoptera appeared later in the season. The Aphidius gifuensis species represented the majority of trapped Braconidae, while the family Aphelinidae contained the largest number of individuals in the aphidiphagous. [less ▲]

Detailed reference viewed: 116 (29 ULg)
Full Text
Peer Reviewed
See detailInvestigation of mevalonate pathway in aphids
Vandermoten, Sophie ULg; Yu, Wenjuan; Chen, Julian et al

Poster (2011, October)

Detailed reference viewed: 23 (6 ULg)