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Background Halyomorpha halys (Stål), the brown marmorated stink bug, is a highly invasive insect species due in part to its exceptionally high levels of polyphagy. This species is also a nuisance due to overwintering in human-made structures. It has caused significant agricultural losses in recent years along the Atlantic seaboard of North America and in continental Europe. Genomic resources will assist with determining the molecular basis for this species’ feeding and habitat traits, defining potential targets for pest management strategies. Results Analysis of the 1.15-Gb draft genome assembly has identified a wide variety of genetic elements underpinning the biological characteristics of this formidable pest species, encompassing the roles of sensory functions, digestion, immunity, detoxification and development, all of which likely support H. halys ’ capacity for invasiveness. Many of the genes identified herein have potential for biomolecular pesticide applications. Conclusions Availability of the H. halys genome sequence will be useful for the development of environmentally friendly biomolecular pesticides to be applied in concert with more traditional, synthetic chemical-based controls.

Halyomorpha halys (Stål), the brown marmorated stink bug, is a highly invasive insect species that is also a nuisance due to overwintering in human-made structures. It has caused significant agricultural losses in recent years along the Atlantic seaboard of North America and in Continental Europe. Analysis of the 1.15 Gb genome assembly in a highly collaborative manner has identified a wide variety of genetic elements responsible for the biological peculiarities of this formidable pest species, including a highly expanded gustatory receptor repertoire likely responsible for H. halys' exceptionally high levels of polyphagy. Many of these genes may have potential for biomolecular pesticide applications. Availability of the H. halys genome sequence will be useful for the development of environmentally friendly biomolecular pesticides for use in concert with more traditional, synthetic chemical-based controls.

The Hemiptera (aphids, cicadas, and true bugs) are a key insect order, with high diversity for feeding ecology and excellent experimental tractability for molecular genetics. Building upon recent sequencing of hemipteran pests such as phloem-feeding aphids and blood-feeding bed bugs, we present the genome sequence and comparative analyses centered on the milkweed bug Oncopeltus fasciatus, a seed feeder of the family Lygaeidae. Contexte : les hémiptères (pucerons, cigales et punaises) constituent un ordre d'insectes clé, caractérisé par une grande diversité alimentaire et une excellente faisabilité expérimentale en génétique moléculaire. En nous appuyant sur le séquençage récent d'hémiptères nuisibles tels que les pucerons phloémifuges et les punaises de lit hématophages, nous présentons la séquence du génome et des analyses comparatives centrées sur la punaise de l'asclépiade Oncopeltus fasciatus, une espèce granivore de la famille des Lygaeidae.Résultats : le génome d'Oncopeltus (926 Mb) est bien représenté par l'assemblage actuel et le jeu de gènes officiel. Nous utilisons nos données génomiques et de séquençage d'ARN non seulement pour caractériser le répertoire de gènes codant pour les protéines et réaliser une interférence ARN spécifique à l'isoforme, mais aussi pour élucider les schémas d'évolution moléculaire et de physiologie. Nous observons une expansion et une diversification continues, spécifiques à la lignée, des protéines répressives à doigts de zinc C2H2. La découverte d'un gain et d'un renouvellement d'introns spécifiques aux hémiptères a également conduit à évaluer la lignée et la taille du génome comme prédicteurs de l'évolution de la structure des gènes. De plus, nous identifions des gains et des pertes enzymatiques corrélés à la biologie de l'alimentation, en particulier pour les réductions associées à une alimentation dérivée et fluide.Conclusions : grâce à la punaise de l’asclépiade, nous disposons désormais d’une masse critique d’espèces séquencées pour un ordre d’insectes hémimétaboles et un groupe proche des Holométaboles, améliorant considérablement la diversité génomique des insectes. Nous définissons ainsi les points communs entre les hémiptères et étudions comment les génomes des hémiptères reflètent des écologies alimentaires distinctes. Compte tenu de la force d’Oncopeltus comme modèle expérimental, ces nouvelles ressources de séquences renforcent les bases de la recherche moléculaire et mettent en lumière des considérations techniques pour l’analyse des génomes d’invertébrés de taille moyenne.

UNEXPECTED remarks are the spice of conversation. Unexpected flavors make a menu attractive. A cook without imagination should rather choose another job. One cannot invent new ingredients but one can...

THE next time you roast a chicken, turkey or goose be sure you are getting the full value of the giblets--the heart, liver and gizzard of the bird. These rate high nutritionally and may be used alone or with other foods to add interest and...

TUNA FISH has never been considered a luxury by the French the Mediterranean is a good provider of fish, many varieties more tender than the tuna. But the French tradition of imagination and economy makes it possible for the housewife to point up this...

A MASTER'S hand in the art of cooking can be readily recognized by a well-seasoned sauce. One famous basic French recipe-- handed down by word of mouth --with a touch of the true culinary genius is Bechamel sauce.

WHEN I was very young. I lived in Czechoslovakia. There we never prepared a bouillon without adding a small piece of browned liver. This gave the soup much additional flavor. But when we had the time, we made the liver into nice things to serve with the...

LEMONS generally are among the few faithful fruits which one can count on finding at the grocer even in wintertime. Not so many years ago a lemonade was the only refreshing drink one served in summer and in winter, hot lemonade helped avoid threatening colds.