Daniel G. Vassão
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View article: Arctic-Atlantic gradient shaped PFAS exposure variability in sympatric guillemot species off Iceland
Arctic-Atlantic gradient shaped PFAS exposure variability in sympatric guillemot species off Iceland Open
Per- and polyfluoroalkyl substances (PFAS) are persistent organic pollutants of growing environmental concern in marine ecosystems. While previous approaches have focused on mean concentrations, we here propose treating PFAS exposure varia…
View article: Multiple glutathione-S-transferases detoxify diverse glucosinolate-based defenses of Brassicales plants in a generalist lepidopteran herbivore (Spodoptera littoralis)
Multiple glutathione-S-transferases detoxify diverse glucosinolate-based defenses of Brassicales plants in a generalist lepidopteran herbivore (Spodoptera littoralis) Open
Brassicales plants defend themselves with glucosinolates that, upon herbivory, are hydrolyzed into toxic isothiocyanates (ITCs) and other derivatives. The side chain diversity of glucosinolates results in a range of structurally distinct p…
View article: Metabolic profiling reveals first evidence of fumigating drug plant Peganum harmala in Iron Age Arabia
Metabolic profiling reveals first evidence of fumigating drug plant Peganum harmala in Iron Age Arabia Open
The utilization of medicinal and psychoactive plants in the past represents a pivotal intersection of culture, health, and biodiversity. While such plants in Arabia have been known from classical and medieval textual records, this study pr…
View article: Bile acids as biomarkers in carbonized archaeological sediment: Insights from dung burning experiments
Bile acids as biomarkers in carbonized archaeological sediment: Insights from dung burning experiments Open
Bile acids are increasingly used as fecal biomarkers for studying archeology, environmental pollution, paleoeconomy, and human-animal interactions. Exclusively synthesized by vertebrates, bile acids are more resistant to diagenetic degrada…
View article: Influence of plant defense signaling and innate insect metabolic differences to the overall performance of fall armyworm (<i>Spodoptera frugiperda</i>) corn and rice strains on maize as a host
Influence of plant defense signaling and innate insect metabolic differences to the overall performance of fall armyworm (<i>Spodoptera frugiperda</i>) corn and rice strains on maize as a host Open
The fall armyworm (FAW, Spodoptera frugiperda ) is a well-known crop pest that feeds mainly on grasses. Separate strains are known to infest maize (corn) and rice that show varying degrees of developmental and metabolic differences, as wel…
View article: Isotopic Evidence for Long-term Bioaccumulation of Perfluoroalkyl Substances (PFASs) in Icelandic seabirds
Isotopic Evidence for Long-term Bioaccumulation of Perfluoroalkyl Substances (PFASs) in Icelandic seabirds Open
Per- and polyfluoroalkyl substances (PFASs) are persistent anthropogenic pollutants with a widespread and significant impact on global marine ecosystems, particularly in the Arctic. Our study is centered in Iceland, an area where the mergi…
View article: Biomolecular characterization of 3500-year-old ancient Egyptian mummification balms from the Valley of the Kings
Biomolecular characterization of 3500-year-old ancient Egyptian mummification balms from the Valley of the Kings Open
View article: Metabolism of plant-derived toxins from its insect host increases the success of the entomopathogenic fungus <i>Beauveria bassiana</i>
Metabolism of plant-derived toxins from its insect host increases the success of the entomopathogenic fungus <i>Beauveria bassiana</i> Open
Beauveria bassiana is a soil fungus that parasitizes a large number of arthropod species, including numerous crop pests, causing white muscardine disease and is therefore used as a biological insecticide. However, some insects, such as the…
View article: First insights into herbivore–plant interaction of the spurge hawkmoth and Euphorbia cyparissias
First insights into herbivore–plant interaction of the spurge hawkmoth and Euphorbia cyparissias Open
The spurge hawkmoth Hyles euphorbiae (Lepidoptera, Sphingidae) is an insect herbivore feeding exclusively on spurges ( Euphorbia ). These are toxic due to their secondary metabolites including diterpene esters with numerous harmful biologi…
View article: Adaptations of <i>Pseudoxylaria</i> towards a comb-associated lifestyle in fungus-farming termite colonies
Adaptations of <i>Pseudoxylaria</i> towards a comb-associated lifestyle in fungus-farming termite colonies Open
Characterizing ancient clades of fungal symbionts is necessary for understanding the evolutionary process underlying symbiosis development. In this study, we investigated a distinct subgeneric taxon of Xylaria (Xylariaceae), named Pseudoxy…
View article: Genes encoding chavicol/eugenol synthase from the creosote bush Larrea tridentata
Genes encoding chavicol/eugenol synthase from the creosote bush Larrea tridentata Open
Particular aspects provide novel methods for redirecting carbon allocation in plants or cell culture from lignification to inherently more useful and tractable materials, and to facilitate the generation of, e.g., biofuels from the remaini…
View article: Author Correction: Alternative transcript splicing regulates UDP-glucosyltransferase-catalyzed detoxification of DIMBOA in the fall armyworm (Spodoptera frugiperda)
Author Correction: Alternative transcript splicing regulates UDP-glucosyltransferase-catalyzed detoxification of DIMBOA in the fall armyworm (Spodoptera frugiperda) Open
View article: Alternative transcript splicing regulates UDP-glucosyltransferase-catalyzed detoxification of DIMBOA in the fall armyworm (Spodoptera frugiperda)
Alternative transcript splicing regulates UDP-glucosyltransferase-catalyzed detoxification of DIMBOA in the fall armyworm (Spodoptera frugiperda) Open
View article: Chemical Modification of Biomarkers through Accelerated Degradation: Implications for Ancient Plant Identification in Archaeo-Organic Residues
Chemical Modification of Biomarkers through Accelerated Degradation: Implications for Ancient Plant Identification in Archaeo-Organic Residues Open
Biochemical and biomolecular archaeology is increasingly used to elucidate the consumption, use, origin, and trade of plants in the past. However, it can be challenging to use biomarkers to identify the taxonomic origin of archaeological p…
View article: Mechanisms of Isothiocyanate Detoxification in Larvae of Two Belowground Herbivores, Delia radicum and D. floralis (Diptera: Anthomyiidae)
Mechanisms of Isothiocyanate Detoxification in Larvae of Two Belowground Herbivores, Delia radicum and D. floralis (Diptera: Anthomyiidae) Open
Like aboveground herbivores, belowground herbivores are confronted with multiple plant defense mechanisms including complex chemical cocktails in plant tissue. Roots and shoots of Brassicaceae plants contain the two-component glucosinolate…
View article: Isothiocyanate detoxification in Delia species
Isothiocyanate detoxification in Delia species Open
We provide additional data like genome sequences, gene annotation, functional annotation for D. floralis we used to generate results described in our manuscript "Mechanisms of isothiocyanate detoxification in larvae of two belowground herb…
View article: Isothiocyanate detoxification in Delia species
Isothiocyanate detoxification in Delia species Open
We provide additional data like genome sequences, gene annotation, functional annotation for D. floralis we used to generate results described in our manuscript "Mechanisms of isothiocyanate detoxification in larvae of two belowground herb…
View article: Activation and detoxification of cassava cyanogenic glucosides by the whitefly Bemisia tabaci
Activation and detoxification of cassava cyanogenic glucosides by the whitefly Bemisia tabaci Open
Two-component plant defenses such as cyanogenic glucosides are produced by many plant species, but phloem-feeding herbivores have long been thought not to activate these defenses due to their mode of feeding, which causes only minimal tiss…
View article: Identification of a Sulfatase that Detoxifies Glucosinolates in the Phloem-Feeding Insect Bemisia tabaci and Prefers Indolic Glucosinolates
Identification of a Sulfatase that Detoxifies Glucosinolates in the Phloem-Feeding Insect Bemisia tabaci and Prefers Indolic Glucosinolates Open
Cruciferous plants in the order Brassicales defend themselves from herbivory using glucosinolates: sulfur-containing pro-toxic metabolites that are activated by hydrolysis to form compounds, such as isothiocyanates, which are toxic to inse…
View article: So Much for Glucosinolates: A Generalist Does Survive and Develop on Brassicas, but at What Cost?
So Much for Glucosinolates: A Generalist Does Survive and Develop on Brassicas, but at What Cost? Open
While plants produce complex cocktails of chemical defences with different targets and efficacies, the biochemical effects of phytotoxin ingestion are often poorly understood. Here, we examine the physiological and metabolic effects of the…
View article: A Generalist Feeding on Brassicaceae: It Does Not Get Any Better with Selection
A Generalist Feeding on Brassicaceae: It Does Not Get Any Better with Selection Open
Brassicaceae (Cruciferae) are ostensibly defended in part against generalist insect herbivores by toxic isothiocyanates formed when protoxic glucosinolates are hydrolysed. Based on an analysis of published host records, feeding on Brassica…
View article: Balancing nutrients in a toxic environment: the challenge of eating
Balancing nutrients in a toxic environment: the challenge of eating Open
Insect herbivores can regulate their food intake by mixing food sources with different nutrient content, but face the resulting challenge of ingesting various plant secondary metabolites. How insects deal with toxins in a complex nutrient …
View article: The selective sequestration of glucosinolates by the cabbage aphid severely impacts a predatory lacewing
The selective sequestration of glucosinolates by the cabbage aphid severely impacts a predatory lacewing Open
The cabbage aphid Brevicoryne brassicae is a notorious agricultural pest that specializes on plants of the Brassicaceae family, which are chemically defended by glucosinolates. By sequestering glucosinolates from its host plants and produc…
View article: The Fall Armyworm Spodoptera frugiperda Utilizes Specific UDP-Glycosyltransferases to Inactivate Maize Defensive Benzoxazinoids
The Fall Armyworm Spodoptera frugiperda Utilizes Specific UDP-Glycosyltransferases to Inactivate Maize Defensive Benzoxazinoids Open
The relationship between plants and insects is continuously evolving, and many insects rely on biochemical strategies to mitigate the effects of toxic chemicals in their food plants, allowing them to feed on well-defended plants. Spodopter…
View article: <i>Sclerotinia</i><i>sclerotiorum</i>Infection Triggers Changes in Primary and Secondary Metabolism in<i>Arabidopsis thaliana</i>
<i>Sclerotinia</i><i>sclerotiorum</i>Infection Triggers Changes in Primary and Secondary Metabolism in<i>Arabidopsis thaliana</i> Open
Sclerotinia sclerotiorum is a devastating plant pathogen that causes substantial losses in various agricultural crops. Although plants have developed some well-known defense mechanisms against invasive fungi, much remains to be learned abo…
View article: Detoxification of plant defensive glucosinolates by an herbivorous caterpillar is beneficial to its endoparasitic wasp
Detoxification of plant defensive glucosinolates by an herbivorous caterpillar is beneficial to its endoparasitic wasp Open
Plant chemical defences impact not only herbivores, but also organisms in higher trophic levels that prey on or parasitize herbivores. While herbivorous insects can often detoxify plant chemicals ingested from suitable host plants, how suc…
View article: The phytopathogenic fungus Sclerotinia sclerotiorum detoxifies plant glucosinolate hydrolysis products via an isothiocyanate hydrolase
The phytopathogenic fungus Sclerotinia sclerotiorum detoxifies plant glucosinolate hydrolysis products via an isothiocyanate hydrolase Open
Brassicales plants produce glucosinolates and myrosinases that generate toxic isothiocyanates conferring broad resistance against pathogens and herbivorous insects. Nevertheless, some cosmopolitan fungal pathogens, such as the necrotrophic…
View article: Tritrophic metabolism of plant chemical defenses and its effects on herbivore and predator performance
Tritrophic metabolism of plant chemical defenses and its effects on herbivore and predator performance Open
Insect herbivores are frequently reported to metabolize plant defense compounds, but the physiological and ecological consequences are not fully understood. It has rarely been studied whether such metabolism is genuinely beneficial to the …
View article: Author response: Tritrophic metabolism of plant chemical defenses and its effects on herbivore and predator performance
Author response: Tritrophic metabolism of plant chemical defenses and its effects on herbivore and predator performance Open
View article: Editorial: The Ecology of Plant Chemistry and How it Drives Multi-Species Interactions
Editorial: The Ecology of Plant Chemistry and How it Drives Multi-Species Interactions Open
EDITORIAL article Front. Plant Sci., 30 July 2019Sec. Plant Metabolism and Chemodiversity Volume 10 - 2019 | https://doi.org/10.3389/fpls.2019.00967