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Nuoroda įrašoma į mainų sritį
Puslapis 1 nuo 17 rezultatus
Cyanide detoxification in an insect herbivore: Molecular identification of β-cyanoalanine synthases from Pieris rapae.
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Cyanogenic compounds occur widely in the plant kingdom. Therefore, many herbivores are adapted to the presence of these compounds in their diet by either avoiding cyanide release or by efficient cyanide detoxification mechanisms. The mechanisms of adaptation are not fully understood. Larvae of
Molecular identification and characterization of rhodaneses from the insect herbivore Pieris rapae.
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The association of cabbage white butterflies (Pieris spec., Lepidoptera: Pieridae) with their glucosinolate-containing host plants represents a well-investigated example of the sequential evolution of plant defenses and insect herbivore counteradaptations. The defensive potential of glucosinolates,
Proteome changes in the plasma of Pieris rapae parasitized by the endoparasitoid wasp Pteromalus puparum.
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Parasitism by the endoparasitoid wasp Pteromalus puparum causes alterations in the plasma proteins of Pieris rapae. Analysis of plasma proteins using a proteomic approach showed that seven proteins were differentially expressed in the host pupae after 24-h parasitism. They were masquerade-like
Identification and characterisation of seventeen glutathione S-transferase genes from the cabbage white butterfly Pieris rapae.
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Insect glutathione S-transferases (GSTs) play essential roles in the detoxification of insecticides and other xenobiotic compounds. The cabbage white butterfly, Pieris rapae, is an economically important agricultural pest. In this study, 17 cDNA sequences encoding putative GSTs were identified in P.
Comparative transcriptome analysis provides insights of anti-insect molecular mechanism of Cassia obtusifolia trypsin inhibitor against Pieris rapae.
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Pieris rapae, a serious Lepidoptera pest of cultivated crucifers, utilizes midgut enzymes to digest food and detoxify secondary metabolites from host plants. A recombinant trypsin inhibitor (COTI) from nonhost plant, Cassia obtusifolia, significantly decreased activities of trypsin-like proteases in
Effect of milk thistle, Silybium marianum, extract on toxicity, development, nutrition, and enzyme activities of the small white butterfly, Pieris rapae.
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The methanolic extract of milk thistle, Silybium marianum L. (Asterales: Asteraceae), was investigated for its effects on the mortality, growth, feeding indices, enzymatic activity, and levels of non-enzymatic molecules of the small white butterfly, Pieris rapae L. (Lepidoptera: Pieridae), a pest of
Host plant-dependent metabolism of 4-hydroxybenzylglucosinolate in Pieris rapae: substrate specificity and effects of genetic modification and plant nitrile hydratase.
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After ingestion of transgenic Arabidopsis thaliana CYP79A1 containing sinalbin (4-hydroxybenzylglucosinolate) due to genetic modification, only one major sinalbin-derived sulphate ester (the sulphate ester of 4-hydroxyphenylacetonitrile) was excreted by Pieris rapae caterpillars (corresponding to
Identification of putative cytochrome P450 monooxygenase genes from the small white butterfly, Pieris rapae (Lepidoptera: Pieridae), and their response to insecticides.
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The small white butterfly, Pieris rapae (Lepidoptera: Pieridae), is an important pest on Brassicaceae plants, causing heavy crop loss each year. Cytochrome P450 monooxygenase (CYP) is a superfamily of enzymes involved in the detoxification of various xenobiotic compounds, including insecticides.
A conserved transcript pattern in response to a specialist and a generalist herbivore.
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Transcript patterns elicited in response to attack reveal, at the molecular level, how plants respond to aggressors. These patterns are fashioned both by inflicted physical damage as well as by biological components displayed or released by the attacker. Different types of attacking organisms might
Arabidopsis glucosinolates trigger a contrasting transcriptomic response in a generalist and a specialist herbivore.
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Phytophagous insects have to deal with toxic defense compounds from their host plants. Although it is known that insects have evolved genes and mechanisms to detoxify plant allochemicals, how specialist and generalist precisely respond to specific secondary metabolites at the molecular level is less
The molecular genetic basis of herbivory between butterflies and their host plants.
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Interactions between herbivorous insects and their host plants are a central component of terrestrial food webs and a critical topic in agriculture, where a substantial fraction of potential crop yield is lost annually to pests. Important insights into plant-insect interactions have come from
Tolerance of Novel Toxins through Generalized Mechanisms: Simulating Gradual Host Shifts of Butterflies.
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Organisms encounter a wide range of toxic compounds in their environments, from chemicals that serve anticonsumption or anticompetition functions to pollutants and pesticides. Although we understand many detoxification mechanisms that allow organisms to consume toxins typical of their diet, we know
Development of a generalist predator, Podisus maculiventris, on glucosinolate sequestering and nonsequestering prey.
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Insect herbivores exhibit various strategies to counter the toxic effects of plant chemical defenses. These strategies include the detoxification, excretion, and sequestration of plant secondary metabolites. The latter strategy is often considered to provide an additional benefit in that it provides
Genetic variation in defense chemistry in wild cabbages affects herbivores and their endoparasitoids.
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Populations of wild Brassica oleracea L. grow naturally along the Atlantic coastlines of the United Kingdom and France. Over a very small spatial scale (i.e., <15 km) these populations differ in the expression of the defensive compounds, glucosinolates (GS). Thus far, very few studies have examined
β-Cyanoalanine Synthases and Their Possible Role in Pierid Host Plant Adaptation.
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Cyanide is generated in larvae of the glucosinolate-specialist Pieris rapae (Lepidoptera:Pieridae) upon ingestion of plant material containing phenylalanine-derived glucosinolates as chemical defenses. As these glucosinolates were widespread within ancient Brassicales, the ability to detoxify
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