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Successful herbivore attack due to metabolic diversion of a plant chemical defense.
Evidence is presented that larvae of the specialist insect, Pieris rapae (cabbage white butterfly, Lepidoptera: Pieridae), are biochemically adapted to the glucosinolate-myrosinase system, the major chemical defense of their host plants.
Glucosinolate structures in evolution.
The probable existence of structure-specific GSL catabolism in intact plants suggests that biochemical evolution of GSLs has more complex implications than the mere liberation of a different hydrolysis product upon tissue disruption.
Indole glucosinolate breakdown and its biological effects
Most species in the Brassicaceae produce one or more indole glucosinolates, and most IMG breakdown products induce the synthesis of phase 1 detoxifying enzymes, which may in some cases prevent carcinogenesis, but in other cases promote carcinogenesis.
Flower vs. Leaf Feeding by Pieris brassicae: Glucosinolate-Rich Flower Tissues are Preferred and Sustain Higher Growth Rate
It is reported here for the first time that Pieris brassicae, commonly assumed to be a typical folivore, actually prefers to feed on flowers of three Brassica nigra genotypes rather than on their leaves, which appears to be in contrast to published negative effects of volatile glucosinolate breakdown products on the closely related Pieris rapae.
Glucosinolates, flea beetle resistance, and leaf pubescence as taxonomic characters in the genus Barbarea (Brassicaceae).
Most Barbarea taxa could be characterized by a particular combination of the investigated characters, and the most aberrant was the P-type of B. vulgaris var.
Initial and Final Products, Nitriles, and Ascorbigens Produced in Myrosinase-Catalyzed Hydrolysis of Indole Glucosinolates
Micellar electrokinetic capillary chromatography (MECC) was used to follow the myrosinase (β-thioglucoside glucohydrolase EC transformation of glucobrassicin
A Saponin Correlated with Variable Resistance of Barbarea vulgaris to the Diamondback Moth Plutella xylostella
The decrease in resistance of the G-type in the fall was correlated with a decrease in the level of 1, and it is concluded that 1 is correlated with the variable resistance of B. vulgaris foliage to the DBM.
Sequestration of Host Plant Glucosinolates in the Defensive Hemolymph of the Sawfly Athalia rosae
Analysis of larvae of the turnip sawfly Athalia rosae revealed that larvae incorporate and concentrate the plant's characteristic glucosinolates from their hosts, and found that the sequestered phytochemicals were transferred through the pupal stage.
1,4-Dimethoxyglucobrassicin in Barbarea and 4-hydroxyglucobrassicin in Arabidopsis and Brassica.
1,4-Dimethoxyglucobrassicin was not detected in 10 other Arabidopsis, Brassica, and Barbarea species, indicating an evolutionarily recent mutation in the indole glucosinolate biosynthesis in B. vulgaris ssp.
Responses of the flea beetles Phyllotreta nemorum and P. cruciferae to metabolically engineered Arabidopsis thaliana with an altered glucosinolate profile
It is concluded that the effect of glucosinolates on adapted insects depends on the chemical or physical environment in which the glucos inolates are found.