Two genomes of highly polyphagous lepidopteran pests (Spodoptera frugiperda, Noctuidae) with different host-plant ranges

Scientific Reports, Journal Year: 2017, Volume and Issue: 7(1)

Published: Sept. 12, 2017

Emergence of polyphagous herbivorous insects entails significant adaptation to recognize, detoxify and digest a variety host-plants. Despite its biological practical importance - since eat 20% crops no exhaustive analysis gene repertoires required for adaptations in generalist insect herbivores has previously been performed. The noctuid moth Spodoptera frugiperda ranks as one the world's worst agricultural pests. This is while majority other lepidopteran are specialist. It consists two morphologically indistinguishable strains ("C" "R") that have different host plant ranges. To describe evolutionary mechanisms both enable emergence herbivory lead shift preference, we analyzed whole genome sequences from laboratory natural populations strains. We observed huge expansions genes associated with chemosensation detoxification compared specialist Lepidoptera. These largely due tandem duplication, possible mechanism enabling polyphagy. Individuals C R show genomic differentiation. found signatures positive selection involved chemoreception, digestion, copy number variation latter families, suggesting an adaptive role structural variation.

Language: Английский

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Parallel gene expansions drive rapid dietary adaptation in herbivorous woodrats

Science, Journal Year: 2025, Volume and Issue: 387(6730), P. 156 - 162

Published: Jan. 9, 2025

How mammalian herbivores evolve to feed on chemically defended plants remains poorly understood. In this study, we investigated the adaptation of two species woodrats ( Neotoma lepida and N. bryanti ) creosote bush Larrea tridentata ), a toxic shrub that expanded across southwestern United States after Last Glacial Maximum. We found creosote-adapted have elevated gene dosage multiple biotransformation enzyme families. These duplication events occurred independently substantially increase expression genes, especially within glucuronidation pathway. propose increased resulting from is an important mechanism by which animals initially adapt novel environmental pressures.

Language: Английский

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Rapid evolution of aphid pests in agricultural environments

Current Opinion in Insect Science, Journal Year: 2018, Volume and Issue: 26, P. 17 - 24

Published: Jan. 8, 2018

Language: Английский

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Promises and challenges in insect–plant interactions

Entomologia Experimentalis et Applicata, Journal Year: 2018, Volume and Issue: 166(5), P. 319 - 343

Published: May 1, 2018

Abstract There is tremendous diversity of interactions between plants and other species. These relationships range from antagonism to mutualism. Interactions with members their ecological community can lead a profound metabolic reconfiguration the plants’ physiology. This favour beneficial organisms deter antagonists like pathogens or herbivores. Determining cellular molecular dialogue plants, microbes, insects, its evolutionary implications important for understanding options each partner adopt an adaptive response biotic environment. Moving forward, how such are shaped by environmental change we potentially mitigate deleterious effects will be increasingly important. The development integrative multidisciplinary approaches may provide new solutions major societal issues ahead us. rapid evolution technology provides valuable tools opens up novel ways test hypotheses that were previously unanswerable, but requires scientists master these tools, understand potential ethical problems flowing implementation, train generations biologists diverse technical skills. Here, brief perspectives discuss future promise challenges research on insect–plant building 16th International Symposium Insect–Plant ( SIP ) meeting was held in Tours, France (2–6 July 2017). Talks, posters, discussions distilled into key areas interactions, highlighting current state field challenges, directions both applied basic research.

Language: Английский

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Volatile terpenes – mediators of plant‐to‐plant communication

The Plant Journal, Journal Year: 2021, Volume and Issue: 108(3), P. 617 - 631

Published: Aug. 9, 2021

Plants interact with other organisms employing volatile organic compounds (VOCs). The largest group of plant-released VOCs are terpenes, comprised isoprene, monoterpenes, and sesquiterpenes. Mono- sesquiterpenes well-known communication in plant-insect interactions, whereas the smallest, most commonly emitted terpene, is rather assigned a function combating abiotic stresses. Recently, it has become evident that different terpenes also act as plant-to-plant signaling cues. Upon being perceived, specific can sensitize distinct pathways receiver plant cells, which turn trigger innate immune responses. This vastly extends range action not only protect plants from various biotic stresses, but convey information about environmental constraints within between plants. As result, plant-pathogen believed to influence each through phytohormone crosstalk, likely equally sensitive reciprocal regulation via terpene Here, we review current knowledge semiochemicals discuss why how make good We may be perceived by plants, what possible downstream events responses cues might orchestrate net response multiple Finally, signal further transmitted community level leading mutually beneficial community-scale or near kin.

Language: Английский

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Global patterns in genomic diversity underpinning the evolution of insecticide resistance in the aphid crop pest Myzus persicae

Communications Biology, Journal Year: 2021, Volume and Issue: 4(1)

Published: July 7, 2021

Abstract The aphid Myzus persicae is a destructive agricultural pest that displays an exceptional ability to develop resistance both natural and synthetic insecticides. To investigate the evolution of in this species we generated chromosome-scale genome assembly living panel >110 fully sequenced globally sampled clonal lines. Our analyses reveal remarkable diversity mutations segregating global populations M. . We show emergence spread these mechanisms influenced by host–plant associations, uncovering widespread co‐option host-plant adaptation also offers against identify repeated independent at same locus, multiple instances novel key findings provide fundamental insights into genomic responses insect strong selective forces, hold practical relevance for control pests parasites.

Language: Английский

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Genome-wide macroevolutionary signatures of key innovations in butterflies colonizing new host plants

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: Jan. 13, 2021

Abstract The mega-diversity of herbivorous insects is attributed to their co-evolutionary associations with plants. Despite abundant studies on insect-plant interactions, we do not know whether host-plant shifts have impacted both genomic adaptation and species diversification over geological times. We show that the antagonistic interaction between swallowtail butterflies highly toxic birthworts began 55 million years ago in Beringia, followed by several major ancient shifts. This evolutionary framework provides a valuable opportunity for repeated tests signatures macroevolutionary changes estimation rates across phylogeny. find are associated genome-wide adaptive molecular evolution (more genes under positive selection) bursts speciation rates, contributing an increase global through time. Our study links ecological changes, adaptations consequences, lending support importance interactions as drivers long time periods.

Language: Английский

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Pesticide resistance in arthropods: Ecology matters too

Ecology Letters, Journal Year: 2022, Volume and Issue: 25(8), P. 1746 - 1759

Published: June 21, 2022

Pesticide resistance development is an example of rapid contemporary evolution that poses immense challenges for agriculture. It typically evolves due to the strong directional selection pesticide treatments exert on herbivorous arthropods. However, recent research suggests some species are more prone evolve than others their evolutionary history and standing genetic variation. Generalist might develop especially rapidly pre-adaptation handle a wide array plant allelochemicals. Moreover, has shown adaptation novel host plants could lead increased resistance. Exploring such cross-resistance between range from ecological perspective needed understand its causes consequences better. Much has, however, been devoted molecular mechanisms underlying while both contexts facilitate have under-studied. Here, we take eco-evolutionary approach discuss circumstances may in arthropods plant-arthropod interactions target non-target interactions. Furthermore, suggest future avenues practical implications understanding evolution.

Language: Английский

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Chromosome-level genome assembly of a specialist walnut pest Atrijuglans aristata

Scientific Data, Journal Year: 2025, Volume and Issue: 12(1)

Published: March 12, 2025

Gelechioidea represents the most diverse superfamily of tiny boring pests in Lepidoptera that pose a serious threat to agricultural and forestry economic crops. However, lack high-quality genome highly specialized species makes it difficult draw general conclusions about mechanism close binding relationship between In this study, based on second- third-generation sequencing reads, we constructed chromosome-level for Atrijuglans aristata, pest, specifically harms green husk cultivated walnuts. The is 480.99 Mb spans 31 pseudo-chromosomes, including Z portion W chromosome. Contig N50 scaffold are 2.68 16.01 respectively. BUSCO completeness achieves 95.6% with total 22,542 protein-coding genes annotated. As first sequenced Stathmopodidae family, provides genetic basis mining important functional traits A. as well an reference study host adaptation (insect) specialists.

Language: Английский

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Characterization of Spodoptera litura Gut Bacteria and Their Role in Feeding and Growth of the Host

Frontiers in Microbiology, Journal Year: 2020, Volume and Issue: 11

Published: June 30, 2020

Insect gut microbes play important roles in host feeding, digestion, immunity, growth and development.

Language: Английский

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