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Simon, Jean-Christophe
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Article A continuum of genetic divergence from sympatric host races to species in the pea aphid complex   Peccoud, Jean ; Ollivier, Anthony ; Plantegenest, Manuel ; Simon, Jean-Christophe
Proceedings of the National Academy of Sciences of the United States of America, 2009 , Volume 106 , n° 18 , 7495-7500 p.     [ ISSN : 0027-8424 ]
Résumé :
Sympatric populations of insects adapted to different host plants, i.e., host races, are good models to investigate how natural selection can promote speciation in the face of ongoing gene flow. However, host races are documented in very few model systems and their gradual evolution into good...

PUCERON ; ACYRTHOSIPHON PISUM ; SPECIATION ; SELECTION SYMPATRIQUE
MARQUEUR MOLECULAIRE ; EVOLUTION BIOLOGIQUE ; INSECTE


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633294 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1463

Article Climate and agricultural context shape reproductive mode variation in an aphid crop pest   Gilabert, Aude ; Simon, Jean-Christophe ; Mieuzet, Lucie ; Halkett, Fabien ; Stoeckel, Solenn ; Plantegenest, Manuel ; Dedryver, Charles-Antoine
Molecular Ecology, 2009 , Volume 18 , n° 14 , 3050-3061 p.     [ ISSN : 0962-1083 ]
Résumé :
In aphids, reproductive mode is generally assumed to be selected for by winter climate. Sexual lineages produce frost-resistant eggs, conferring an advantage in regions with cold winters, while asexual lineages predominate in regions with mild winters. However, habitat and resource...

PUCERON ; RHOPALOSIPHUM PADI ; PARTHENOGENESE
CONTROLE DU SEXE ; ECOLOGIE ; INSECTE


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633278 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1478

Article Early progress in aphid genomics and consequences for plant-aphid interactions studies   Tagu, Denis ; Klingler, J.P. ; Moya, Andrès ; Simon, Jean-Christophe
Molecular Plant Microbe Interactions, 2008 , Volume 21 , n° 6 , 701-708 p.   [ ISSN : 0894-0282 ]
Résumé :
Aphids occupy a niche comprising two conceptual realms: a micron-scale feeding site beneath the plant surface, in which a syringe-like appendage mediates chemical exchange with a specific plant cell type and the larger realm of a metazoan with sensory organs, a nervous system, and behavior, all...

PUCERON ; ACYRTHOSIPHON PISUM ; PARTHENOGENESE
GENOMIQUE ; VIRUS PHYTOPATHOGENE ; VIRUS ; RELATION PLANTE-INSECTE ; SYMBIOSE


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633241 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1409

Article Evolution of Soldier-Specific Venomous Protease in Social Aphids   Kutsukake, M. ; Nikoh, N. ; Shibao, H. ; Rispe, Claude ; Simon, Jean-Christophe ; Fukatsu, T.
Molecular Biology and Evolution, 2008 , Volume 25 , n° 12 , 2627-2641 p.     [ ISSN : 0737-4038 ]
Résumé :
In social aphids of the genus Tuberaphis a cysteine protease gene of the family cathepsin B exhibits soldier-specific expression and intestinal protease production. The product is orally excreted and injected by soldier nymphs into natural enemies, thereby exerting an insecticidal activity. In an...

PUCERON ; CATHEPSINE B ; DUPLICATION ; VENIN ; TUBERAPHIS
EVOLUTION BIOLOGIQUE ; PROTEASE ; ENZYME ; GENE ; INSECTE


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633276 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1459

Article Gene flow between sexual and facultatively asexual lineages of an aphid species and the maintenance of reproductive mode variation   Halkett, Fabien ; Plantegenest, Manuel ; Bonhomme, Joël ; Simon, Jean-Christophe
Molecular Ecology, 2008 , Volume 17 , 2998-3007 p.   [ ISSN : 0962-1083 ]
Résumé :
Many organisms considered as strictly clonal may in fact experience some rare events of sexual reproduction with their sexual relatives. However, the rate of sexual-asexual gene flow has rarely been assessed mainly because its evaluation is difficult to achieve in the field. In the cyclically...

PUCERON ; RHOPALOSIPHUM PADI ; PARTHENOGENESE
HYBRIDATION ; REPRODUCTION ANIMALE ; GENE


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633218 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1411

Article Host range expansion of an introduced insect pest through multiple colonizations of specialized clones   Peccoud, Jean ; Figueroa, Christian C. ; Silva, A.X. ; Ramirez, Claudio C. ; Mieuzet, Lucie ; Bonhomme, Joël ; Stoeckel, Solenn ; Plantegenest, Manuel ; Simon, Jean-Christophe
Molecular Ecology, 2008 , Volume 17 , n° 21 , 4608-4618 p.     [ ISSN : 0962-1083 ]
Résumé :
Asexuality confers demographic advantages to invasive taxa, but generally limits adaptive potential for colonizing of new habitats. Therefore, pre-existing adaptations and habitat tolerance are essential in the success of asexual invaders. We investigated these key factors of invasiveness by...

PUCERON ; BUCHNERA ; ACYRTHOSIPHON PISUM ; INVASION BIOLOGIQUE ; PARTHENOGENESE ; SPECIALISATION
RELATION HOTE-PARASITE ; LEGUME ; INSECTE
CHILI ; AMERIQUE DU SUD


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633265 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1438

Article Is the life cycle of high arctic aphids adapted to climate change?   Hullé, Maurice ; Bonhomme, Joël ; Maurice, D. ; Simon, Jean-Christophe
Polar Biology, 2008 , Volume 31 , n° 9 , 1037-1042 p.     [ ISSN : 0722-4060 ]
Résumé :
The high arctic aphid Acyrthosiphon svalbardicum Heikinheimo is endemic to Svalbard and has developed a shortened life cycle to cope with harsh environmental conditions prevailing in this archipelago. Previous studies in the 1990s showed that contrarily to Sitobion calvulum, a species which is...

PUCERON ; ACYRTHOSIPHON SVALBARDICUM
CHANGEMENT CLIMATIQUE ; CYCLE DE VIE ; DYNAMIQUE DES POPULATIONS ; INSECTE
ARCTIQUE


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633223 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1418

Article Large gene family expansion and variable selective pressures for cathepsin B in aphids   Rispe, Claude ; Kutsukake, M. ; Doublet, V. ; Hudaverdian, S. ; Legeai, F. ; Simon, Jean-Christophe ; Fukatsu, T.
Molecular Biology and Evolution, 2008 , Volume 25 , n° 1 , 5-17 p.   [ ISSN : 0737-4038 ]
Résumé :
Aphids exclusively feed on plant phloem sap that contains much sugar and some nonessential amino acids but is poor in lipids and proteins. Conventionally, it has been believed that aphids substantially have no intestinal digestion of proteins. However, we here report an unexpected finding that...

PUCERON ; CATHEPSINE B
GENE ; PROTEASE ; ENZYME ; EVOLUTION BIOLOGIQUE ; INSECTE ; EXPRESSION GENIQUE


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633236 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1401

Article Seasonal and annual genotypic variation and the effect of climate on population genetic structure of the cereal aphid Sitobion avenae in northern France   Dedryver, Charles-Antoine ; Le Gallic, Jean-François ; Haack, Larry ; Halkett, Fabien ; Outreman, Yannick ; Simon, Jean-Christophe
Bulletin of Entomological Research, 2008 , Volume 98 , n° 2 , 159-168 p.   [ ISSN : 0007-4853 ]
Résumé :
Changes in the genetic structure and genotypic variation of the aphid Sitobion avenae collected from cereal crops in northern France were examined by analysing variation at five microsatellite loci across several years and seasons. Little regional and temporal differentiation was detected, as...

MICROSATELLITE ; PUCERON ; SITOBION AVENAE ; DISPERSION
FACTEUR CLIMATIQUE ; GENOME ; INSECTE ; VARIABILITE GENETIQUE


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633235 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1387

Article Sex versus parthenogenesis: A transcriptomic approach of photoperiod response in the model aphid Acyrthosiphon pisum (Hemiptera: Aphididae)   Cortes, Teresa ; Tagu, Denis ; Simon, Jean-Christophe ; Moya, Andrès ; Martinez-Torres, David
Gene, 2008 , Volume 408 , n° 1-2 , 146-156 p.   [ ISSN : 0378-1119 ]
Résumé :
Most aphids develop a cyclic parthenogenesis life-cycle. After several generations of viviparous parthenogenetic females, it follows a single annual generation of sexual individuals, usually in autumn, that mate and lay the sexual eggs. Shortening of photoperiod at the end of the summer is a key...

PUCERON ; PARTHENOGENESE ; PHOTOPERIODE ; ACYRTHOSIPHON PISUM ; HYBRIDATION SOUSTRACTIVE ET SUPPRESSIVE
CYCLE DE VIE ; GENE ; EXPRESSION GENIQUE


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633247 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1389

Article Shifting from clonal to sexual reproduction in aphids: physiological and developmental aspects   Le Trionnaire, Gaël ; Hardie, J. ; Jaubert, Stéphanie ; Simon, Jean-Christophe ; Tagu, Denis
Biology of the Cell, 2008 , Volume 100 , n° 8 , 441-451 p.     [ ISSN : 0248-4900 ]
Résumé :
Developmental biology is one of the fastest growing and fascinating research fields in life sciences. Among the wide range of embryonic development, a fundamental difference exists between organisms with sexual or asexual development. Aphids are unusual organisms which display alternative...

PARTHENOGENESE ; PUCERON
INSECTE ; REPRODUCTION ANIMALE ; PHOTOPERIODICITE ; BIOLOGIE DU DEVELOPPEMENT


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633228 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1427

Article Short-term population differences in the genetic architecture of life history traits related to sexuality in an aphid species   Nespolo, Roberto Fernando ; Figueroa, Christian C. ; Plantegenest, Manuel ; Simon, Jean-Christophe
Heredity, 2008 , Volume 100 , n° 4 , 374-381 p.   [ ISSN : 0018-067X ]
Résumé :
One of the most important factors that determine the evolutionary trajectory of a suite of traits in a population is the structure of the genetic variance-covariance matrix (G). We studied the cyclically parthenogenetic aphid Rhopalosiphum padi, whose populations exhibit two types of reproductive...

PUCERON ; PARTHENOGENESE ; RHOPALOSIPHUM PADI ; MATRICE G
SEXE ; GENETIQUE QUANTITATIVE


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633237 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1406

Article Winged morph of the high arctic aphid Acyrthosiphon svalbardicum (Hemiptera: aphididae): abundance, reproductive status, and ecological significance   Simon, Jean-Christophe ; Bonhomme, Joël ; Blackman, Roger Laurence ; Hullé, J.
Canadian Entomologist, 2008 , Volume 140 , n° 3 , 385-387 p.   [ ISSN : 0008-347X ]
Résumé :
The aphid Acyrthosiphon svalbardicum Heikinheimo, which is endemic to Svalbard and feeds exclusively on eightpetal mountains-avens, Dryas octopetala L. (Rosaceae), has developed a series of adaptative traits to cope with the harsh conditions of the High Arctic. Prior to this study, only a single...

PUCERON ; ACYRTHOSIPHON SVALBARDICUM ; SPITZBERG
ADAPTATION ; COMPORTEMENT ; BIOLOGIE DES POPULATIONS
ARCTIQUE


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633224 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1416

Article Annotated expressed sequence tags and xenobiotic detoxification in the aphid Myzus persicae (Sulzer)   Figueroa, Christian C. ; Prunier-Leterme, Nathalie ; Rispe, Claude ; Sepulveda, F. ; Fuentes-Contreras, E. ; Sabater-Muñoz, Beatriz ; Simon, Jean-Christophe ; Tagu, Denis
Insect Science, 2007 , Volume 14 , n° 1 , 29-45 p.   [ ISSN : 1672-9609 ]
Résumé :
"Abstract Aphids (Hemiptera: Aphididae) are phytophagous insects that are important agricultural pests. The enormous negative economic impacts caused by aphids worldwide are well known, and are mostly due to their high multiplication rate and the transmission of phytopathogenic viruses. Aphid...

"GENOMIQUE ; RELATION PLANTE-INSECTE ; SEQUENCE NUCLEIQUE"
PUCERON ; MYZUS PERSICAE ; DESINTOXICATION ; EXPRESSED SEQUENCE TAGS ; ANNOTATION


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632708 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1310

Article Aphid colony turn-over influences the spatial distribution of the grain aphid Sitobion avenae over the wheat growing season   Fievet, V. ; Dedryver, Charles-Antoine ; Plantegenest, Manuel ; Simon, Jean-Christophe ; Outreman, Yannick
Agricultural and Forest Entomology, 2007 , Volume 9 , n° 2 , 125-134 p.   [ ISSN : 1461-9555 ]
Résumé :
1 Temporary habitats are characterized by the appearance and disappearance of patches in which resources are available for a limited period only. Organisms living in those environments usually exhibit adaptive traits, such as a high ability to find and exploit new patches. Among them are...

DISTRIBUTION SPATIALE ; DYNAMIQUE DES POPULATIONS
PUCERON ; SITOBION AVENAE ; GEOSTATISTIQUE


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632765 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1321

Article Des pucerons avec ou sans ailes   Simon, Jean-Christophe
BIOFUTUR, 2007 , Volume 279 , 48 p.   [ ISSN : 0294-3506 ]


ADAPTATION
PUCERON ; AILE


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632768 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1348

Article Elimination of a specialised facultative symbiont does not affect the reproductive mode of its aphid host   Simon, Jean-Christophe ; Sakurai, M. ; Bonhomme, Joël ; Tsuchida, T. ; Koga, R. ; Fukatsu, T.
Ecological Entomology, 2007 , Volume 32 , n° 3 , 296-301 p.   [ ISSN : 0307-6946 ]
Résumé :
1. Microorganisms that manipulate the reproduction of their hosts through diverse mechanisms including the induction of parthenogenesis are widespread among arthropods. 2. The pea aphid, Acyrthosiphon pisum, shows a variation in its reproductive mode, with lineages reproducing by cyclical...

SYMBIOSE
PUCERON ; ACYRTHOSIPHON PISUM ; PARTHENOGENESE ; RICKETTSIA


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632795 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1341

Article Farm-scale assessment of movement patterns ans colonization dynamics of the grain aphid in arable crops and hedgerows   Vialatte, Aude ; Plantegenest, Manuel ; Simon, Jean-Christophe ; Dedryver, Charles-Antoine
Agricultural and Forest Entomology, 2007 , Volume 9 , n° 4 , 337-346 p.   [ ISSN : 1461-9555 ]
Résumé :
1#Integrated management of crop pests requires the identification of the appropriate spatial scale at which colonization processes occurs. We assessed, by coupling demographic and genetic methods, the relative contribution of local and transient migrants of the grain aphid Sitobion avenae to...

GENOTYPE
PUCERON ; SITOBION AVENAE ; DYNAMIQUE DE COLONISATION ; GESTION INTEGREE


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632782 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1375

Article Genome reduction of the aphid endosymbiont Buchnera aphidicola in a recent evolutionary time scale   Gomez-Valero, L. ; Silva, Francisco J. ; Simon, Jean-Christophe ; Latorre, Amparo
Gene, 2007 , Volume 389 , n° 1 , 87-95 p.   [ ISSN : 0378-1119 ]
Résumé :
Genome reduction, a typical feature of symbiotic bacteria, was analyzed in the last stages of evolution of Buchnera aphidicola, the primary aphid endosymbiont, in two neutrally evolving regions: the pseudogene cmk and an intergenic region. These two regions were examined in endosymbionts from...

SYMBIOSE ; GENOME ; EVOLUTION BIOLOGIQUE
BUCHNERA APHIDICOLA ; PSEUDOGENE ; PUCERON


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632746 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1318

Article La vie sexuée et asexuée des pucerons   Simon, Jean-Christophe ; Jaubert, Stéphanie ; Rispe, Claude ; Tagu, Denis
BIOFUTUR, 2007 , Volume 279 , 53-56 p.   [ ISSN : 0294-3506 ]


REPRODUCTION ANIMALE ; CYCLE DE VIE
PUCERON ; PARTHENOGENESE ; FONCTION SEXUELLE


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632751 : UMR Institut de génétique environnement et protection des plantes (UMR IGEPP) - Cote = B-1350
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