Dual Chemical Barriers Protect a Plant Against Different Larval Stages of an Insect
- J. Renwick, Wenqing Zhang, M. Haribal, A. Attygalle, Kimberly D. Lopez
- Biology, MedicineJournal of Chemical Ecology
- 1 August 2001
Feeding bioassays with different larval stages of the insect were used to monitor the isolation and identification of two bioactive constituents that could explain the natural resistance of this plant.
Seasonal Anointment with Millipedes in a Wild Primate: A Chemical Defense Against Insects?
- X. Valderrama, John G. Robinson, A. Attygalle, T. Eisner
- BiologyJournal of Chemical Ecology
- 1 December 2000
It is argued that the secretion that rubs off on the monkeys in the course of anointment provides protection against insects, particularly mosquitoes (and the bot flies they transmit) during the rainy season.
Attractive and defensive functions of the ultraviolet pigments of a flower (Hypericum calycinum)
- Matthew R. Gronquist, Alexander L. Bezzerides, A. Attygalle, J. Meinwald, M. Eisner, T. Eisner
- Biology, MedicineProceedings of the National Academy of Sciences…
- 13 November 2001
It is found the DIPs to be present in high concentration in the anthers and ovarian wall of the flower, suggesting that the compounds also serve in defense.
New defensive chemical data for ground beetles (Coleoptera: Carabidae): interpretations in a phylogenetic framework
It is shown that formic acid or other relatively strong irritants are correlated with tribes having a high species diversity in tropical regions, whereas tribes exhibiting higher diversity in temperate regions use milder saturated/unsaturated carboxylic acids.
Collisionally-induced dissociation mass spectra of organic sulfate anions
The collisionally-induced dissociation mass spectra of a variety of organic sulfate ester anions are described and mechanistically rationalized. A cyclic syn-elimination pathway, analogous to that of…
Self-defensive layer-by-layer films with bacteria-triggered antibiotic release.
- I. Zhuk, Freneil B. Jariwala, A. Attygalle, Yong Wu, M. Libera, S. Sukhishvili
- BiologyACS Nano
- 8 August 2014
These coatings present a promising way to incorporate antibacterial agents at surfaces to prevent bacterial colonization of implanted biomedical devices and contribute to the development of antibiotic resistance.
Defense by foot adhesion in a chrysomelid beetle (Hemisphaerota cyanea): characterization of the adhesive oil.
Sexual dimorphism in the defensive secretion of a carabid beetle
The defensive secretions of male and female Oodes americanus display striking qualitative differences, and shared components also include hexanoic, (E)-2-hexenoic, benzoic, and (E-2-octenoic acid, of which the latter two had not previously been reported from carabid beetles.
LC/MS characterization of undesired products formed during iodoacetamide derivatization of sulfhydryl groups of peptides.
It is reported here that iodoacetamide reacts with the N- terminal NH2 and the C-terminal carboxylic acid groups, in addition to the peripheral residues bearing protic functional groups, and derivatives formed in this way are useful for sequence determination of peptides by MS.
A cyanoallyl glucoside from Alliaria petiolata, as a feeding deterrent for larvae of Pieris napi oleracea.
- M. Haribal, Z. Yang, A. Attygalle, J. Renwick, J. Meinwald
- ChemistryJournal of Natural Products
- 21 March 2001
Feeding inhibition assays showed comparable activity for the synthetic and natural glycosides, and structural assignment was confirmed by synthesis of peracetylated alliarinoside and its 2E isomer.