ABSTRACT Changes in monoterpene and phenolic compounds resulting from water stress and colonization by Sphaeropsis sapinea were examined for 9- and 11-year-old red pine trees in a plantation and 3-year-old seedlings in a growth chamber. Four treatments were assigned at random to individual trees in the field: no treatment, herbicide to kill surrounding weeds, supplemental water, and both herbic...

A method is described for quantitative analysis of monoterpenes in western redcedar (Thuja plicata) foliage by gas chromatography with flame ionization detection. Response factors for monoterpenes identified in redcedar are evaluated to determine similarities among monoterpene responses. Evaluation demonstrates that redcedar monoterpenes yield detector responses that fall into two groups. One m...

We identified a cis-prenyltransferase gene, neryl diphosphate synthase 1 (NDPS1), that is expressed in cultivated tomato (Solanum lycopersicum) cultivar M82 type VI glandular trichomes and encodes an enzyme that catalyzes the formation of neryl diphosphate from isopentenyl diphosphate and dimethylallyl diphosphate. mRNA for a terpene synthase gene, phellandrene synthase 1 (PHS1), was also ident...

Promoting effect of cyclic monoterpenes on percutaneous absorption of antiarrythmics drugs disopyramide, lidocaine and trimecaine was investigated in the rats. Laurocapram (Azone) was used as a standard comparator of penetration enhancement. The absorption of trimecaine was significantly enhanced by addition of limonene, trans-p-menthane and Azone in 1% concentration. Lidocaine and disopyramide...

We investigated controls over the emission of monoterpenes from two species of boreal forest conifers, black spruce (Picea mariana Miller (B.S.P.)) and jack pine (Pinus banksiana Lamb). Monoterpenes are important in plants as carbon-based defensive compounds and in the atmosphere as photochemically reactive compounds that affect ozone and carbon monoxide concentrations. We examined ecological t...

A comparative study on in vitro and in silico inhibition of trypsin and matriptase by derivatives of the sunflower trypsin inhibitor-1 at near physiological pH is reported. Besides wild-type bicyclic SFTI-1, monocyclic variants possessing native cystine as well as redox-stable triazolyl side-chain macrocyclization motifs were studied for the first time in matriptase inhibition assays. Interesti...

The sesquiterpene compounds present in red wines were characterized and quantified by Headspace Solid-Phase Microextraction in combination with Gas Chromatography–Mass Spectrometry (HS-SPME-GC-MS). Sixteen sesquiterpenes were identified, mainly hydrocarbons but also derived oxygenated compounds. Sesquiterpenes were acyclic, monocyclic, byciclic and tryciclic. Sesquiterpenes were detected in SIM...

Smith, Richard H. 2000. Xylem monoterpenes of pines: distribution, variation, genetics, function. Gen. Tech. Rep. PSW-GTR-177. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; 454 p. Retrieval Terms: Pinus species, pine grafts, bark beetles, western pine beetles, gas liquid chromatography, California. The monoterpenes of about 16,000 xylem resin sa...