Kinetics of the Natural Evolution of Hydrogen Cyanide in Plants in Neotropical Pteridium arachnoideum and its Ecological Significance

@article{Alonsoamelot2005KineticsOT,
  title={Kinetics of the Natural Evolution of Hydrogen Cyanide in Plants in Neotropical Pteridium arachnoideum and its Ecological Significance},
  author={Miguel E. Alonso-amelot and Alberto de J. Oliveros-Bastidas},
  journal={Journal of Chemical Ecology},
  year={2005},
  volume={31},
  pages={315-331}
}
The time-dependent natural release of hydrogen cyanide (HCN) was studied quantitatively using young croziers of the neotropical bracken fern Pteridium arachnoideum. HCN production was quantified in crushed tissue using a flow reactor at 30.0 ± 0.1∘C. Released HCN was carried into appropriate traps with a moist air flow. Aliquots were drawn from the traps at fixed time intervals, and the HCN concentration was evaluated spectroscopically. All available prunasin (Pru), the only cyanogenic… Expand
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References

SHOWING 1-10 OF 48 REFERENCES
A method for the practical quantification and kinetic evaluation of cyanogenesis in plant material. Application to Pteridium aquilinum and Passiflora capsularis
A procedure for the quantitative determination of hydrogen cyanide (HCN) released by plants has been developed based on the UV–vis spectrum of the sodium picrate–cyanide complex. Fresh plant tissueExpand
Cyanogenic polymorphism in Eucalyptus polyanthemos Schauer subsp vestita L. Johnson and K. Hill (Myrtaceae)
TLDR
characterises cyanogenesis in the Australian tree Eucalyptus polyanthemos Schauer subsp. Expand
Cyanogenesis and the role of cyanogenic compounds in insects.
TLDR
The cyanogenic system comprising cyanogenic glycosides, hydroxynitriles (cyanohydrins), beta-glucosidases and nitrile lyases is widespread in the plant kingdom but also occurs in several arthropods, and their function as defensive compounds seems likely on the basis of their ability to generate HCN and their localization. Expand
Temporal and spatial variation in cyanogenic glycosides in Eucalyptus cladocalyx.
TLDR
Although some of the changes in cyanogenic glycoside concentration in young leaf tips may have been driven by changes in leaf nitrogen, there was a significant decrease in the proportion of nitrogen allocated to cyanogenic Glycosides in young leaves during the summer, coinciding with the peak flowering period. Expand
Seasonal Variations in Hydrogen Cyanide Concentration of Three Lotus Species
TLDR
Partitioning of the rhizomatous BFT cultivar ARS-2620 demonstrated that leaves and flowers produced the greatest concentration of HCN, five times as much as stems and ripe-seed pods, which is typically produced in winter and fall. Expand
Kinetic studies on the enzyme (S)-hydroxynitrile lyase from hevea brasiliensis using initial rate methods and progress curve analysis
TLDR
Results indicate an Ordered Uni Bi mechanism with the formation of a dead-end complex of enzyme, (S)-mandelonitrile and HCN, and good agreement could be achieved between the two methods supporting the suggested mechanism. Expand
The chemistry and toxicology of bioactive compounds in bracken fern (Pteridium SSP), with special reference to chemical ecology and carcinogenesis
TLDR
The present chapter reviews the xenobiotic chemistry of bracken by structural types, including all those compounds derived from the shikimic acid and mevalonic acid biosynthetic routes, and describes recent developments in the chemical behavior, toxicology, and chemical ecology of the most notorious of these compounds. Expand
Mini-Review: Constraints on Effectiveness of Cyanogenic Glycosides in Herbivore Defense
TLDR
Evidence is examined showing that differences in the effectiveness of cyanogenic glycosides in deterring herbivory can usually be reconciled when the morphology, physiology, and behavior of the animals, together with the concentration of cyanogens in the host plant, are taken into account. Expand
Comparative spatial distribution, size, biomass and growth rate of two varieties of bracken fern (Pteridium aquilinum L. Kuhn) in a neotropical montane habitat
TLDR
A comparative field study of caudatum and arachnoideum, the two Pteridium aquilinum varieties known to grow in the neotropics, was performed in a montane savanna habitat of the Venezuelan Andes that was affected by wildfire, finding dissimilarities interpreted as the hitherto unreported indication of diverging growth strategies of two cohabitant bracken varieties following fire. Expand
Determination of Cyanide and Cyanogenic Glycosides from Plants
Many plants have the capacity to release hydrogen cyanide (HCN) when the tissues are damaged. The entire plant or any plant part may exhibit this property. Most commonly the compounds responsible areExpand
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