Nonpolar lipid composition ofChenopodium albumgrown in continuously cultivated and nondisturbed soils

Abstract

Chenopodium album L. plants grown in continuously cultivated and in nondisturbed soils were compared in terms of the compositions of nonpolar extracts of the corresponding aerial parts. Both light petroleum ether extracts of C. album L. were analyzed by high-performance thin-layer LC, capillary GC, and capillary GC-EI-MS. Further percolation and medium-pressure LC, along with EI-MS analysis, permitted the separation and identification of the chemical constituents. Differences were observed between mean contents of the chemical constituents of C. album L., with respect to nonpolar extracts, obtained from continuously cultivated and from nondisturbed soils, in particular in linear and branched long-chain hydrocarbons, FA and their esters, and long-chain linear alcohols and aldehydes. The most remarkable features of the disturbed soils were a pronounced increase in the amounts of linear hydrocarbons and a decrease in the relative proportions of FA.

Changes in Lupinus albus and Lupinus angustifolius Alkaloid Profiles in Response to Mechanical Damage

“…Induced resistance is defined as changes in plant chemistry or physiology with measurable effect on herbivore performance via behavior or biology (1). Results previously reported by our laboratory showed that different kinds of environmental stresses could affect secondary metabolite production, quinolizidine alkaloids among them (2)(3)(4)(5). Effects of mechanical wounding on Lupinus species have been earlier reported by Wink (6).…”

Soil Quality Effects on Chenopodium album Flavonoid Content and Antioxidant Potential

“…Changes in environmental conditions particularly in soil quality can trigger variations on secondary metabolites production. In a previous work , it was reported that C. album samples grown in Argentina in intensively cultivated soils produced larger amounts of nonpolar compounds such as long chain linear and branched hydrocarbons, fatty acid esters, and long chain alcohols and aldehydes. The aim of this work was to study the free radical scavenging ability and flavonoid contents in plant samples grown under the same conditions.…”

Chemical Defenses in Eucalyptus Species: A Sustainable Strategy Based on Antique Knowledge to Diminish Agrochemical Dependency

“…We have previously reported data related to the modulating effect of soil deterioration on secondary metabolites production by two widespread weed species, Chenopodium album and Senecio grisebachii. C. album samples grown in continuously cultivated (deteriorated) Argentinean Rolling Pampa soils have demonstrated to produce higher levels of long chain hydrocarbon derivatives (known to inhibit plant germination) than those grown in pristine soil (Leicach et al 2003). We have also demonstrated that the invasive weed S. grisebachii produced higher levels of toxic pyrrolizidine alkaloids in soils with higher deterioration degree.…”