Chemical defense
View article: Chemical Components, Emission Dynamics, and External Immune Functions of Red Palm Weevil Larval Volatiles in Response to Changes in Developmental Stages and Pathogen Stress
Chemical Components, Emission Dynamics, and External Immune Functions of Red Palm Weevil Larval Volatiles in Response to Changes in Developmental Stages and Pathogen Stress Open
Chemical defenses help insects resist pathogen infection. The volatile compositions, emission patterns, and external immune functions of the red palm weevil (RPW), a major invasive pest now established in numerous countries including the M…
View article: Insecticidal and Ovicidal Activity of Cymbopogon citratus Essential Oil and Its Nanoemulsion Against Hemipteran Crop Pests with Mortality, Antennal Malformations, and Volatile Alterations
Insecticidal and Ovicidal Activity of Cymbopogon citratus Essential Oil and Its Nanoemulsion Against Hemipteran Crop Pests with Mortality, Antennal Malformations, and Volatile Alterations Open
Hemipteran insects such as Euschistus heros and Dysdercus peruvianus are important pests of soybean and cotton, respectively, making them relevant targets in pest management programs. This work aims to evaluate the insecticidal and chemica…
View article: Leaf beetles employ tryptophan to detoxify the chemical defenses of poplar trees
Leaf beetles employ tryptophan to detoxify the chemical defenses of poplar trees Open
This dataset contains the raw data files and the derived mzml data files for the non-target metabolomics data used for the study :"Leaf beetles employ tryptophan to detoxify the chemical defenses of poplar trees" Abstract: Herbivorous inse…
View article: Data from: Separate and synergistic anti-herbivore effects of non-glandular trichomes and leaf chemistry in a desert plant
Data from: Separate and synergistic anti-herbivore effects of non-glandular trichomes and leaf chemistry in a desert plant Open
Plant defense phenotypes commonly integrate physical and chemical traits that may act synergistically against herbivores, but empirical evidence for synergy as a defense strategy remains limited. We experimentally tested the separate and c…
View article: Fungal symbiont of an ambrosia beetle possesses high nutrient content and suppresses competing fungi with antimicrobial compounds
Fungal symbiont of an ambrosia beetle possesses high nutrient content and suppresses competing fungi with antimicrobial compounds Open
Wood-colonizing beetles are associated with a diversity of microbes many of which are thought to act as mutualists with their beetle hosts, but the evidence is usually anecdotal. The ship-timber beetle Elateroides dermestoides, one of the …
View article: Vapor-phase (S)-methoprene alters cuticular hydrocarbons in the Argentine ant (Hymenoptera: Formicidae)
Vapor-phase (S)-methoprene alters cuticular hydrocarbons in the Argentine ant (Hymenoptera: Formicidae) Open
The Argentine ant, Linepithema humile (Mayr), is one of the world’s most damaging invasive species that belongs to the subfamily Dolichoderinae. Current control strategies for L. humile are reliant on neurotoxic insecticides; however, thei…
View article: Diet and chemical defenses of the Sonoran Desert toad
Diet and chemical defenses of the Sonoran Desert toad Open
The Sonoran Desert toad ( Incilius alvarius ) is the only animal known to secrete the psychedelic compound 5-MeO-DMT as a chemical defense, but the source of 5-MeO-DMT in I. alvarius remains unknown. Some amphibians produce chemical defens…
View article: Secondary Compounds in Milkweed Nectar Negatively Impact Thermal Tolerance in Bumble Bees
Secondary Compounds in Milkweed Nectar Negatively Impact Thermal Tolerance in Bumble Bees Open
Bumble bees play a critical role in ecosystem health and pollination, but recently, populations have been in decline worldwide. One way to improve outcomes is to increase floral resource availability, which improves nutrition while allevia…
View article: Chemodiversity in Action: Exploring the Costs and Benefits of Dual Chemical Defences in $\textit{Erysimum cheiranthoides}$
Chemodiversity in Action: Exploring the Costs and Benefits of Dual Chemical Defences in $\textit{Erysimum cheiranthoides}$ Open
Insect herbivores, representing more than half of all described animal species, are among Earth's most diverse and abundant organisms. Their interactions with plants exert intense selective pressure, driving the evolution of diverse plant …
View article: Chemical Profilingof Wild and Commercial Tomato Leaves:Protocol Optimization, Insights into Differences in Chemical Profilesbetween Species and Developmental Stages
Chemical Profilingof Wild and Commercial Tomato Leaves:Protocol Optimization, Insights into Differences in Chemical Profilesbetween Species and Developmental Stages Open
The tomato is a globally important crop whose domestication has led to significant chemical changes that may reduce its natural defenses. This study compares the chemical profiles of wild (Solanum pimpinellifolium) and commercial (Solanum …
View article: Zeaxanthin and Other Carotenoids: Roles in Abiotic Stress Defense with Implications for Biotic Defense
Zeaxanthin and Other Carotenoids: Roles in Abiotic Stress Defense with Implications for Biotic Defense Open
Xanthophylls are carotenoids with diverse roles in stress protection across all taxa of life. This review highlights chloroplast-localized xanthophylls (with a focus on zeaxanthin) of plants by presenting an overview of the protective effe…
View article: Glandular quinoline-derivates protect crustacean woodlice from spider predation
Glandular quinoline-derivates protect crustacean woodlice from spider predation Open
In evolutionary time, aquatic crustaceans colonized land and faced new terrestrial predators such as spiders and ants. We tested the hypothesis that the crustacean terrestrial woodlouse Porcellio scaber produces defensive metabolites that …
View article: Invasive egg predators and food availability interactively affect maternal investment in egg chemical defence
Invasive egg predators and food availability interactively affect maternal investment in egg chemical defence Open
Invasive species commonly predate the offspring of native species and eggs are the life stage most vulnerable to this predation. In many species with no maternal care, females can alter the phenotype of eggs to protect them, for instance t…
View article: Specializationof Sesquiterpene Lactone Metabolitesin <i>Liriodendron</i> Plant Defense
Specializationof Sesquiterpene Lactone Metabolitesin <i>Liriodendron</i> Plant Defense Open
Tulip trees (Liriodendron tulipifera and Liriodendron chinense), members of the Magnolia family, are known for their distinctive morphology and ecological significance, but their chemical diversity remains understudied. In th…
View article: A chemical and toxicological study of the tuber extracts of Rhoicissus revoilii Planch. (Vitaceae): A Comorian plant used as a pesticide
A chemical and toxicological study of the tuber extracts of Rhoicissus revoilii Planch. (Vitaceae): A Comorian plant used as a pesticide Open
This study aimed to assess the acute toxicity of Rhoicissus revoilii Planch tuber extracts. This plant from the Vitaceae family is used to treat various pathologies and as a pesticide in the Comoros. From dried tuber powder previously trea…
View article: Unveiling the Defenses: A Current and Comprehensive Review of Coleoptera Carabidae Strategies
Unveiling the Defenses: A Current and Comprehensive Review of Coleoptera Carabidae Strategies Open
The Carabidae family, or ground beetles, is a wide and ecologically significant group within the Coleoptera order, known for its role as natural predators of agricultural pests and as bioindicators of ecosystem health. These beetles employ…
View article: Aphid Colony Size in Tansy is Affected by Plant Chemical Composition but not by Belowground Herbivory
Aphid Colony Size in Tansy is Affected by Plant Chemical Composition but not by Belowground Herbivory Open
Plants are hosts for above- and belowground insect communities that can influence each other via above-belowground plant-physiological dynamics. To mediate interactions, plants produce secondary metabolites, including terpenoids, and mixtu…
View article: SECONDARY METABOLITES AS PLANT DEFENSE MECHANISMS: A COMPARATIVE REVIEW OF WILD AND CULTIVATED SPECIES
SECONDARY METABOLITES AS PLANT DEFENSE MECHANISMS: A COMPARATIVE REVIEW OF WILD AND CULTIVATED SPECIES Open
Plants are one of the most interesting groups in earth which possess many complex mechanisms to grow and survive. One among those is their defence mechanisms. Different plants have different defence mechanisms. For the same, secondary meta…
View article: Scenting Ketones in the Defense Glands of Two Julids From the Caucasus (Arthropoda, Myriapoda, Diplopoda, Julida)
Scenting Ketones in the Defense Glands of Two Julids From the Caucasus (Arthropoda, Myriapoda, Diplopoda, Julida) Open
View article: Higher accumulation of mitragynine in Mitragyna speciosa (kratom) leaves affected by insect attack
Higher accumulation of mitragynine in Mitragyna speciosa (kratom) leaves affected by insect attack Open
Kratom leaves are widely consumed by locals to increase their stamina for working longer hours in the field. However, insect damage to the leaves can lead to significant loss of leaf harvest. Despite this, there remains considerable uncert…
View article: Sexual differences in defensive strategies: investigating chemical defences and visual signals in a wasp moth <i>Amata nigriceps</i>
Sexual differences in defensive strategies: investigating chemical defences and visual signals in a wasp moth <i>Amata nigriceps</i> Open
Aposematic animals use conspicuous warning signals to advertise their chemical defences to predators. Selection by predators can favour conspicuousness and large pattern elements, which enhance predator avoidance learning. In aposematic sp…
View article: Rice master regulator ‘HYR’ enhances growth and defense mechanisms with consequences for fall armyworm growth and host selection
Rice master regulator ‘HYR’ enhances growth and defense mechanisms with consequences for fall armyworm growth and host selection Open
Rice (Oryza sativa L.), the staple food for half of the world’s population, suffers heavy damage by insect herbivores, especially the emerging fall armyworm (FAW), Spodoptera frugiperda. HIGHER YIELD RICE (HYR), a master regulator of multi…
View article: Fungal alkaloids mediate defense against bruchid beetles in field populations of an arborescent ipomoea
Fungal alkaloids mediate defense against bruchid beetles in field populations of an arborescent ipomoea Open
View article: Within‐plant variation in chemical defence of <i>Erysimum cheiranthoides</i> does not explain <i>Plutella xylostella</i> feeding preference
Within‐plant variation in chemical defence of <i>Erysimum cheiranthoides</i> does not explain <i>Plutella xylostella</i> feeding preference Open
Plants invest a substantial fraction of their resources into defence against herbivores, with the highest levels of defence often allocated only to the most valuable tissues. Plants in the genus Erysimum (Brassicaceae) have evolved the abi…
View article: Latitudinal Variation in Constitutive-Chemical-Defense Compounds in Two Host Plants of Lymantria Dispar (Lymantriidae): Betula Pendula (Betulaceae) and Larix Sibirica (Pinaceae)
Latitudinal Variation in Constitutive-Chemical-Defense Compounds in Two Host Plants of Lymantria Dispar (Lymantriidae): Betula Pendula (Betulaceae) and Larix Sibirica (Pinaceae) Open
View article: Herbivore defense syndromes differ between native and invasive species
Herbivore defense syndromes differ between native and invasive species Open
1. In their non-native ranges, invasive plant species may escape specialist herbivores and thus experience exclusive pressure from generalists. This is predicted to shape the defense strategies of successful non-native invaders, as propose…
View article: Intraspecific chemodiversity in black poplar (Populus nigra) and its impact on biotic interactions
Intraspecific chemodiversity in black poplar (Populus nigra) and its impact on biotic interactions Open
This thesis investigates the chemodiversity of Populus nigra (Black Poplar) as a key determinant of its ecological resilience and conservation value. Using advanced metabolomic approaches, it examines spatial, temporal, and ecological vari…
View article: Chemical Warfare Through the Ages: A Systematic Review From Antiquity to the Present
Chemical Warfare Through the Ages: A Systematic Review From Antiquity to the Present Open
Chemical warfare means the use of chemical agents that have direct toxic effects on animals, plants and humans, as weapons. The first documented use of a chemical agent for warfare purposes occurred in ancient times around 10,000 BCE in So…
View article: <b>Chemical components, emission dynamics, and external immune functions of red palm weevil larval volatiles in response to changes in developmental stages and pathogen stress</b>
<b>Chemical components, emission dynamics, and external immune functions of red palm weevil larval volatiles in response to changes in developmental stages and pathogen stress</b> Open
Chemical defense is crucial for insects, in resistance to pathogen infection in vitro. However, the volatile compositions, emission patterns, and external immune functions of the red palm weevil (RPW), a major invasive pest, are lar…
View article: <b>Chemical components, emission dynamics, and external immune functions of red palm weevil larval volatiles in response to changes in developmental stages and pathogen stress</b>
<b>Chemical components, emission dynamics, and external immune functions of red palm weevil larval volatiles in response to changes in developmental stages and pathogen stress</b> Open
Chemical defense is crucial for insects, in resistance to pathogen infection in vitro. However, the volatile compositions, emission patterns, and external immune functions of the red palm weevil (RPW), a major invasive pest, are lar…