Data/hora: 09/06/2024 04:02:30

Provedor de dados: 	47	
País: 	Argentina	
Título: 	Leaf surfaces of Gomphrena spp. (Amaranthaceae) from Cerrado biome	
Autores: 	Carvalho,Suzane Margaret Fank-de-; Gomes,Misléia Rodrigues de Aguiar; Silva,Pedro Ítalo Tanno; Báo,Sônia Nair.	
Data: 	2010-04-01	
Ano: 	2010	
Palavras-chave: 	Anatomy; Epicuticular wax; Platelets; Trichomes; Stomata.	
Resumo: 	The leaf structure and micromorphology characterize plant species and reflex its interactions with the environment. Leaf epidermis sculptures aid high transpiration plants on light reflection. The form and distribution of epicuticular wax crystalloids are important to characterize the surface. Aiming to know the micromorphology and the ultrastructure of G. arborescens, G. pohlii and G. virgata, leaves of these Cerrado native species were collected in Brasília, Distrito Federal, Brazil, at the Olympic Center of the Universidade de Brasília and at Reserva Ecológica do Roncador. Leaves of G. globosa, an Indian native species, were also studied for comparison. Leaves were fractionated, fixed and treated for observation under optical and scanning electron microscope. A description of the leaf epidermis is provided, along with some quantitative data to help the species taxonomy and support future studies on their physiology: all species are amphistomatic and have Stomatal Index between 7.27 and 18.99. The Gomphrena spp. studied have epicuticular wax platelets and wax sculptures over their larger trichome, which are relevant for their taxonomy. Over the Cerrado species cuticle, epicuticular wax is damaged by fungi hyphae development. The presence of epicuticular wax on Gomphrena spp. leaves corroborates the phylogenetical alliance between Amaranthaceae and Chenopodiaceae.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452010000100004	
Editor: 	Sociedad Latinoamericana de Microscopía Electrónica.; Centro Regional de Investigaciones Científicas y Tecnológicas (Mendoza, Argentina)	
Formato: 	text/html	
Fonte: 	Biocell  v.34 n.1 2010	
Fonte: 	info:eu-repo/semantics/openAccess