Journal ArticleDOI
Facultative Symbionts in Aphids and the Horizontal Transfer of Ecologically Important Traits
TLDR
Experiments on pea aphids have demonstrated that facultative symbionts protect against entomopathogenic fungi and parasitoid wasps, ameliorate the detrimental effects of heat, and influence host plant suitability.Abstract:
Aphids engage in symbiotic associations with a diverse assemblage of heritable bacteria. In addition to their obligate nutrient-provisioning symbiont, Buchnera aphidicola, aphids may also carry one or more facultative symbionts. Unlike obligate symbionts, facultative symbionts are not generally required for survival or reproduction and can invade novel hosts, based on both phylogenetic analyses and transfection experiments. Facultative symbionts are mutualistic in the context of various ecological interactions. Experiments on pea aphids (Acyrthosiphon pisum) have demonstrated that facultative symbionts protect against entomopathogenic fungi and parasitoid wasps, ameliorate the detrimental effects of heat, and influence host plant suitability. The protective symbiont, Hamiltonella defensa, has a dynamic genome, exhibiting evidence of recombination, phage-mediated gene uptake, and horizontal gene transfer and containing virulence and toxin-encoding genes. Although transmitted maternally with high fidelity, facultative symbionts occasionally move horizontally within and between species, resulting in the instantaneous acquisition of ecologically important traits, such as parasitoid defense.read more
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Journal ArticleDOI
Correction: male-killing Wolbachia and mitochondrial selective sweep in a migratory African insect
TL;DR: In this paper, it was brought to our attention that seven of the mitochondrial COI haplotypes described in this manuscript as Spodoptera exempta haplotypes were in fact other species.
Journal ArticleDOI
The role of insect intestinal microbes in controlling of Empoasca onukii Matsuda (Hemiptera: Cicadellidae) pest infestations in the production of tea garden: a review
Dissertation
Effet de l’écologie d’un hôte sur l’évolution de son principal parasitoïde
TL;DR: Un evolution experimentale sur des populations of parasitoides soumises a des populations d'hotes portant H. defensa (resistantes) ou non (sensibles) montre une adaptation des parasitoide soumis aux hotes resistants dans les populations exposees a la resistance.
Journal ArticleDOI
A host record for a strictly specific aphid parasitoid Aphidius smithi (Braconidae: Aphidiinae): the food plant-host aphid-parasitoid association puzzle acquires a new piece
Minoo Heidari Latibari,Gholamhossein Moravvej,Ehsan Rakhshani,Javad Karimi,Diana Carolina Arias-Penna +4 more
TL;DR: Sharma et al. as discussed by the authors reported the first record for this food plant-host aphid-primary parasitoid association and reviewed the known host range and global distribution for Aphidius smithi.
Posted ContentDOI
Variable organization of symbiont-containing tissue across planthoppers hosting different heritable endosymbionts
TL;DR: In this article , the authors identify and describe seven primary types of symbiont localization and seven types of the organization of the bacteriome and discuss how planthopper localization correlates with their acquisition and replacement patterns and the symbionts likely functions.
References
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Book
Parasitoids: Behavioral and Evolutionary Ecology
TL;DR: This book synthesizes the work of both schools of parasitoid biology and asks how a consideration of evolutionary biology can help to understand the behavior, ecology, and diversity of the approximately one to two million species of Parasitoids found on earth.
Journal ArticleDOI
Genomics and Evolution of Heritable Bacterial Symbionts
TL;DR: Insect heritable symbionts provide some of the extremes of cellular genomes, including the smallest and the fastest evolving, raising new questions about the limits of evolution of life.
Book
Evolution of sex determining mechanisms
TL;DR: Books, as a source that may involve the facts, opinion, literature, religion, and many others are the great friends to join with.
Journal ArticleDOI
Type III Secretion Machines: Bacterial Devices for Protein Delivery into Host Cells
Jorge E. Galán,Alan Collmer +1 more
TL;DR: Several Gram-negative pathogenic bacteria have evolved a complex protein secretion system termed type III to deliver bacterial effector proteins into host cells that then modulate host cellular functions.