Profiles of the Headspace Volatile Organic and Essential Oil Compounds from the Tunisian Cardaria draba (L.) Desv. and Its Leaf and Stem Epidermal Micromorphology  

作　　者：Wissal Saadellaoui Samiha Kahlaoui Kheiria Hcini Abir Haddada Noomene Sleimi Roberta Ascrizzi Guido Flamini Fethia Harzallah-Skhiri Sondes Stambouli-Essassi 

机构地区：[1]Laboratory of Biodiversity,Biotechnology and Climate Change(LR11-ES09),Faculty of Sciences of Tunis,University of Tunis El Manar,Tunis,1060,Tunisia [2]Laboratory RME-Resources,Materials and Ecosystems,Faculty of Sciences of Bizerte,University of Carthage,Jarzouna,Bizerte,7021,Tunisia [3]Dipartimento di Farmacia,Universitàdi Pisa,Via Bonanno 33,Pisa,56126,Italy [4]Laboratory of Bioresources:Integrative Biology and Valorization(LR14-ES06),High Institute of Biotechnology of Monastir,University of Monastir,Monastir,5000,Tunisia

出　　处：《Phyton-International Journal of Experimental Botany》2024年第4期725-744,共20页国际实验植物学杂志（英文）

摘　　要：In this work, we investigated aroma volatiles emanated by dry roots, stems, leaves, flowers, and fruits of Cardariadraba (L.) Desv. growing wild in Tunisia and its aerial part essential oils (EOs) composition. A total of 37 volatileorganic compounds (96.7%–98.9%) were identified;4 esters, 4 alcohols, 7 hydrocarbons, 12 aldehydes, 5 ketones,1 lactone, 1 organosulfur compound, 2 organonitrogen compounds, and 1 acid. The hydrocarbons form the maingroup, representing 49.5%–84.6% of the total detected volatiles. The main constituent was 2,2,4,6,6-pentamethylheptane(44.5%–76.2%) reaching the highest relative percentages. Forty-two compounds were determined in thetwo fractions of EOs, representing 98.8% and 97.2% of the total oil composition, respectively. The principal componentswere hexadecanoic acid (34.6%), 6-methyl-5-hepten-2-one (18.3%), decanal (15.0%), 6,10,14-trimethyl-2-pentadecanone (13.2%), and n-pentacosane (13%). Micromorphological details of the leaf and stem epidermisusing light microscopy revealed polygonal cells with sinuous walls in the adaxial and abaxial leaf surfaces andnearly rectangular and long ones with linear and thick walls for the stem epidermis. The stomata complexes wereanisocytic in the leaf epidermis and mainly anisocytic and rarely paracytic in the stem epidermis. Non-glandulartrichomes were unbranched and long with an acute apex or short with a convex apex. The glandular ones wereidentified for the first time in this species. They were short-stalked with a large secretory head. The highest stomatalindex (17.02%) was recorded in the abaxial leaf surface. The identification of headspace volatiles and essentialoil compounds can be used to characterize this species, and the various epidermis micromorphologicalfeatures are very useful for biosystematics taxonomic studies within Brassicaceae.

关 键 词：Cardaria draba aroma profile essential oils EPIDERMIS TRICHOMES 

分 类 号：Q94[生物学—植物学]