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Trichomes micromorphology and essential oil variation at different developmenta...
Rodrigues, Leandra; Póvoa, Orlanda; Teixeira, Generosa; Figueiredo, Ana Cristina; Moldão, Margarida; Monteiro, AnaThe indumentum of Mentha pulegium L., studied by light and scanning electron microscopy, was characterized by non-glandular and glandular trichomes, which corresponded to the common arrangement described for the Lamiaceae family. Histochemistry revealed the presence of pectins, total lipids, acidic lipids and essential oils in the glandular trichomes secretions. The essential oil yield ranged from 0.3% (w/d.w.)...
Comparative leaf micromorphoanatomy of Vitis vinifera SSP.vinifera (Vitaceae) r...
Monteiro, Ana; Teixeira, Generosa; Lopes, CarlosAiming to characterize and discriminate between four red grapevine cultivars – ‘Aragonez’ (AR), ‘Cabernet Sauvignon’ (CS), ‘Syrah’ (SY) and ‘Touriga Nacional’ (TN) – grown under Mediterranean field conditions, we studied their leaf micromorphoanatomic characteristics under light (LM) and scanning electron microscopy (SEM). The studied characteristics included those of the epidermis, stomata and hair distributio...
Chemical composition and antibacterial activity of essential oils from the medi...
Rodrigues, Leandra; Duarte, Aida; Figueiredo, Ana Cristina; Brito, Luísa; Teixeira, Generosa; Moldão, Margarida; Monteiro, AnaMentha cervina is a medicinal plant traditionally used in Portugal in folk medicine, in different gastric disorders and inflammations of the respiratory tract. In order to validate those traditional uses, M. cervina essential oils (EOs) were characterized by GC and GC–MS and their antimicrobial activity was tested against 23 bacterial strains (including multiresistant strains). The EOs were dominated by the mon...
Morphology of secretory structures and essential oil composition in Mentha cerv...
Rodrigues, Leandra; Monteiro, Patricia; Póvoa, Orlanda; Teixeira, Generosa; Moldão-Martins, Margarida; Figueiredo, Ana Cristina; Monteiro, AnaABSTRACT: Mentha cervina L. is an aromatic plant that is traditionally used in the Alentejo region of Portugal to flavour food dishes and for the medicinal properties of the essential oil produced in its glandular trichomes. The morphology and distribution of the secretory structures of 20 populations was studied by light and scanning electron microscopy and revealed a great similarity in the type and distribut...
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