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
Citations
More filters
Journal ArticleDOI
The effects of high temperatures on individuals and populations of the green spruce aphid Elatobium abietinum (Walker)
TL;DR: It is indicated that high temperatures during mid‐summer have a significant impact on E. abietinum individuals and populations and, ultimately, may influence how the aphid responds to climate change.
Book ChapterDOI
Insect Symbiosis and Immunity: The Bean Bug–Burkholderia Interaction as a Case Study
Jiyeun Kate Kim,Bok Leul Lee +1 more
TL;DR: The bean bug–Burkholderia studies demonstrate the intricate interplay between symbiosis and immunity and suppress the immune responses of the symbiotic midgut region to support the survival of the immune-susceptible Burkholderia symbionts.
Journal ArticleDOI
Host preference of Lysiphlebus testaceipes (Hymenoptera: Braconidae, Aphidiinae), an alien aphid parasitoid in Benin
TL;DR: This study contributes to the fundamental knowledge on the oviposition behaviour of L. testaceipes and provides information for use in the development of sustainable aphid pest management strategies in Benin.
Journal ArticleDOI
Metabolomic Changes in Sogatella furcifera under Southern rice black-streaked dwarf virus Infection and Temperature Stress
TL;DR: The metabolomics study suggests that SRBSDV may influence the extreme temperature tolerance of WBPH by regulating the accumulation of amino acids, sugars, and polyols in the insect body.
Journal ArticleDOI
Diversity and phylogenetic analysis of endosymbionts from Trioza erytreae (Del Guercio) and its parasitoids in Kenya
Brenda A. Rasowo,Brenda A. Rasowo,Robert S Copeland,Robert S Copeland,Fathiya M. Khamis,Owusu Fordjour Aidoo,Owusu Fordjour Aidoo,Inusa J. Ajene,Samira A. Mohamed,Mamoudou Sétamou,Sunday Ekesi,Christian Borgemeister +11 more
TL;DR: The phylogenetic result of parasitoids was supported by morphological identification where five different parasitoid species could be identified and their occurrence and broad distribution indicate the possibility of future use for control of T. erytreae.
References
More filters
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.