RESUMEN
The volatile principles emitted from different aerial organs of two S. palaestina Benth. populations (Mediterranean (Med) and Irano-Turanian (IrT)) growing wild in Jordan were extracted by Solid Phase Micro-Extraction (SPME) and analysed by GC/MS technique. Sesquiterpene hydrocarbons dominated stems (59.38%, 49.67%) and leaves (93.28%, 32.39%) emissions from Med and IrT zones, respectively while monoterpene hydrocarbons had the major contribution to the aroma of pre-flowering buds (78.62%, 74.96%), opened flowers (76.12%, 59.99%) and petals (69.57%, 54.28%) and were mostly represented by sabinene (in Med zone) and ociemene isomers (Z & E) in IrT zone. Multivariate analysis classified the two populations into two different clusters based on their origin and indicated the occurrence of two ecotypes of this species. Different organs from the same collection site showed emission profiles of similar chemical composition.
Asunto(s)
Monoterpenos Bicíclicos/análisis , Flores/química , Monoterpenos/análisis , Odorantes/análisis , Hojas de la Planta/química , Tallos de la Planta/química , Salvia/química , Salvia/clasificación , Sesquiterpenos/análisis , Cromatografía de Gases y Espectrometría de Masas/métodos , Jordania , Análisis Multivariante , Extracción en Fase Sólida/métodosRESUMEN
The major route of ammonia assimilation is the reaction which is catalyzed by glutamine synthetase to give ammonia. Cell-free extracts and purified thylakoid membranes using differential centrifugation and density gradient techniques were assayed for the percentage activity of the enzyme. Glutamine synthetase was detected in all cell-free extracts. Seventy six percent of the enzyme activity was found associated with the thylakoid membranes. Using antiserum raised to the thylakoids, 78.5% inhibition of the enzyme activity was obtained.