Results 41 to 50 of about 3,312 (209)

Activity of Enantiomers of Sulcatol on Apterae of Rhopalosiphum padi

Journal of Chemical Ecology, 1998
GC-MS analysis of volatiles released from wheat infested with a high density of aphids showed the presence of 6-methyl-5-hepten-2-ol (sulcatol). The proportion of enantiomers present in the volatiles was determined by esterifying the mixture with (1S)-( − )-camphanic chloride and quantifying the esters. The mixture consisted of 75% (R)-( − ) and 25% (S)
Quiroz,, Niemeyer
openaire   +2 more sources

Non-host volatiles do not affect host acceptance by alate virginoparae of Rhopalosiphum padi (Hemiptera: Aphididae) settled on the host plant surface

European Journal of Entomology, 2005
Using electrical penetration graphs to monitor aphid feeding, it was shown that volatiles of a non-host plant (alfalfa, Medicago sativa L.) did not disrupt the process of host acceptance by alate virginoparae of the birdcherry-oat aphid, Rhopalosiphum ...
Ruby OLIVARES-DONOSO, Hermann M. NIEMEYER   +1 more
doaj   +1 more source

Triticum monococcum lines with distinct metabolic phenotypes and phloem-based partial resistance to the bird cherry-oat aphid Rhopalosiphum padi [PDF]

, 2016
Crop protection is an integral part of establishing food security, by protecting the yield potential of crops. Cereal aphids cause yield losses by direct damage and transmission of viruses.
Martin, J. L., Greenslade, A. F. C., Smart, L. E., Corol, D. I., Clark, S. J., Aradottir, G. I., Ward, J. L.   +6 more
core   +1 more source

DIMBOA levels in hexaploid Brazilian wheat are not associated with antibiosis against the cereal aphids Rhopalosiphum padi and Sitobion avenae [PDF]

, 2017
The objective of this study was to evaluate the natural levels of the plant defence compound DIMBOA in young leaves of eight hexaploid Brazilian wheat genotypes and the impact of the genotypes upon development of cereal aphids, Rhopalosiphum padi and ...
Caulfield, J. C., Janet Martin, Birkett, Michael A., MARTIN, J., Periera J. F., Smart, L. E., PEREIRA, P. R. V. da S., Stephen J. Powers, Aradottir, G. I., Martin, J. L., Birkett, M. A., Pereira, P. V. R .S, Paulo R. V. S. Pereira, Sarria, André L. F., Powers, Stephen J., Gudbjorg I. Aradottir, Pereira, Paulo R. V. S., John A. Pickett, Michael A. Birkett, Pickett, J. A., Aradottir, Gudbjorg I., André L. F. Sarria, PEREIRA, J. F., Sarria, A. L. F., Pickett, John, Lesley E. Smart, Martin, Janet, Jorge F. Pereira, Powers, S. J., Pereira, Jorge F., Caulfield, John C., John C. Caulfield, Smart, Lesley E.   +32 more
core   +1 more source

Barley Yellow Dwarf Virus Influences Its Vector’s Endosymbionts but Not Its Thermotolerance

Microorganisms, 2023
The barley yellow dwarf virus (BYDV) of cereals is thought to substantially increase the high-temperature tolerance of its aphid vector, Rhopalosiphum padi, which may enhance its transmission efficiency.
Evatt Chirgwin, Qiong Yang, Paul A. Umina, Joshua A. Thia, Alex Gill, Wei Song, Xinyue Gu, Perran A. Ross, Shu-Jun Wei, Ary A. Hoffmann   +9 more
doaj   +1 more source

Sequence Requirements for Translation Initiation of Rhopalosiphum padi Virus ORF2

Virology, 2000
Rhopalosiphum padi virus (RhPV) is an aphid-infecting virus with a 10-kb ssRNA genome that contains two large open reading frames (ORFs). ORF1 and ORF2 encode the nonstructural and structural polyproteins, respectively. Both ORFs are preceded by noncoding regions of 500 nt that could function as internal ribosome entry segments (IRESes).
Domier, Leslie L., McCoppin, Nancy K., D'Arcy, Cleora J.   +2 more
openaire   +2 more sources

Russian wheat aphid: a model for genomic plasticity and a challenge to breeders

Insect Science, EarlyView.
Invasive foundress finds suitable habitat and reproduces through pathogenesis. Wingless females produce life offspring quickly, which leads to high population densities. High population densities result in competition, which may induce epigenetic changes and wing development for dispersal.
Astrid Jankielsohn, Vicky L. Tolmay, Marlon‐Schylor Luke le Roux, Lintle Mohase, Mpho S. Mafa, Vittorio F. Nicolis, Eduard Venter, Nicolaas Francois Visser Burger, Anna‐Maria Botha   +8 more
wiley   +1 more source

Strong biases in the transmission of sex chromosomes in the aphid Rhopalosiphum padi

Genetical Research, 2005
The typical life cycle of aphids involves several parthenogenetic generations followed by a single sexual one in autumn, i.e. cyclical parthenogenesis. Sexual females are genetically identical to their parthenogenetic mothers and carry two sex chromosomes (XX).
Frantz, A., Plantegenest, Manuel, Bonhomme, Joel, Prunier Leterme, Nathalie, Simon, Jean-Christophe   +4 more
openaire   +4 more sources

Annual flower strips under the ‘Sweden Blossom’ initiative – how do they perform for pollinators, natural enemies and herbivores?

Agricultural and Forest Entomology, EarlyView.
Pollinator‐targeted annual flower strips increase abundances of pollinators but also natural enemies and herbivores. Natural enemies and herbivores disperse in a taxon‐specific manner into nearby crops. Pest control by ground‐dwellers slightly increases in crop areas near the flower strips.
Neus Rodríguez‐Gasol, Ola Lundin, Elodie Chapurlat, Mattias Hammarstedt, Mattias Jonsson, Johan A. Stenberg, Maria Viketoft   +6 more
wiley   +1 more source

Sublethal effects of sulfoxaflor on the fitness of two species of wheat aphids, Sitobion avenae (F.) and Rhopalosiphum padi (L.)

Journal of Integrative Agriculture, 2019
Sitobion avenae (F.) and Rhopalosiphum padi (L.) are two important pests of wheat in China. They typically coexist in fields during the late period of wheat growth. Sulfoxaflor is a novel sulfoximine insecticide that demonstrates broad-spectrum efficacy,
Juan-juan XIN, Wen-xin YU, Xiao-qing YI, Jun-ping GAO, Xi-wu GAO, Xiao-peng ZENG   +5 more
doaj   +1 more source