title: Influence of Environment on Glandular Trichomes and Composition of Essential Oil of Perovskia abrotanoides Karel.
abstract: BACKGROUND
  Perovskia abrotanoides Karel. is a medicinal plant used in Iranian folk medicine as a pain killer. Forty-one components have been identified in P. abrotanoides samples collected from Baluchistan Province, and 29 components have been recognized in samples collected from Khorasan Province. The leaves of P. abrotanoides have glandular trichomes (capitates and peltate) on both sides of the lamina.
  
  
  OBJECTIVE
  This study aimed to evaluate the variation of oil constituents of the plant and illustrate the glandular trichomes types and then show the influence of environment on oil constituents and glandular trichomes.
  
  
  METHODS
  The essential oil of the plant was obtained using hydrodistillation and the analysis of oils carried out using GC-MS. The anatomical analysis of leaves was done by fixing, coloring, and photoing the sections.
  
  
  RESULTS
  Glandular trichomes composed of capitates and peltate trichomes. The essential oil composition differs. Viridiflora and neryl acetate were not identified in yellow glandular trichomes.
  
  
  CONCLUSIONS
  It seems that there is no relation between anatomical characteristics of the plant leaves and its essential oil composition.
authors.affiliation: Department of Sciences, Faculty of Biology, Isfahan University, Isfahan, IR Iran.
authors.forename: Elaheh
authors.initials: E
authors.lastname: Oreizi
authors.affiliation: Department of Sciences, Faculty of Biology, Isfahan University, Isfahan, IR Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Rahiminejad
authors.affiliation: Isfahan Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Isfahan University of Medical Sciences, Isfahan, IR Iran.
authors.forename: Gholamreza
authors.initials: G
authors.lastname: Asghari
keywords: Essential oil; Flower; GC-MS Analysis; Glandular; Leaves; Perovskia; Trichomes