Brasília de Minas, Brazil
Brasília de Minas, Brazil

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Cabral E.L.,Northeast National University | Miguel L.M.,Northeast National University | Viana P.L.,Jardim Botanico Inhotim
Annales Botanici Fennici | Year: 2012

Two new species of the genus Borreria, B. carajasensis E.L. Cabral & L.M. Miguel and B. elaiosulcata E.L. Cabral & L.M. Miguel, are described and illustrated, based on material collected from iron outcrops in the Serra dos Carajás region, Pará State, Brazil. A key to morphologically similar species is provided; these species can be recognized by their transversally sulcate seeds. Borreria cupularis and B. multiflora are reported for the first time from the Pará State. © Finnish Zoological and Botanical Publishing Board 2012.

Lima T.B.,Catholic University of Brasília | Silva O.N.,Catholic University of Brasília | Silva O.N.,Federal University of Juiz de fora | Migliolo L.,Catholic University of Brasília | And 7 more authors.
Journal of Natural Products | Year: 2011

Bacterial infections directly affect the world's population, and this situation has been aggravated by indiscriminate use of antimicrobial agents, which can generate resistant microorganisms. In this report, an initial screening of proteins with antibacterial activity from corms of 15 species of the Xanthosoma genus was conducted. Since Xanthosoma blandum corms showed enhanced activity toward bacteria, a novel protein with bactericidal activity was isolated from this particular species. Edman degradation was used for protein N-termini determination; the primary structure showed similarities with Kunitz inhibitors, and this protein was named Xb-KTI. This protein was further challenged against serine proteinases from different sources, showing clear inhibitory activities. Otherwise, no hemolytic activity was observed for Xb-KTI. The results demonstrate the biotechnological potential of Xb-KTI, the first proteinase inhibitor with antimicrobial activity described in the Xanthosoma genus. (Figure Presented). © 2011 The American Chemical Society and American Society of Pharmacognosy.

Souza F.S.,Federal University of Juiz de fora | Salino A.,Federal University of Minas Gerais | Viana P.L.,Jardim Botanico Inhotim | Salimena F.R.G.,Federal University of Juiz de fora
Acta Botanica Brasilica | Year: 2012

This work presents an inventory of pteridophyte species that occur in the Serra Negra, of Minas Gerais. The area is part of the Mantiqueira Range, and is situated between the coordinates 21°58′11″S 43°53′21″ W, 22°01′4.4″ S, 43°52′31.5″ W, 21°58′21.4″ S, 43°50′06.5″ W and 21°58′53″ S, 43°56′08″ W. The vegetation in the Serra Negra is characterized by a mosaic of different phytophysiognomies, divided into forests (evergreen and seasonal semideciduous forests) and open formations (rocky grasslands). The inventory was carried out from 2003 to 2008, during monthly excursions to collect botanical material and data in the study area. A total of 209 species, distributed in 24 families and 75 genera, were recorded. The families with the highest number of species were Polypodiaceae (40), Dryopteridaceae (33) and Pteridaceae (25). More than the half (110) of the inventoried species were recorded exclusively in the forests formations. Sixty-nine species were terrestrial, 37 were saxicolous or terrestrial and 32 were epiphytes. This work shows that this region is rich in ferns and reveals the importance of this kind of study for conservation and management of pteridophytes in the state of Minas Gerais.

Goncalves E.G.,Jardim Botanico Inhotim
Nordic Journal of Botany | Year: 2011

Two new species of Philodendron- Araceae (Philodendron bernardopazii E. G. Gonç. and Philodendron ricardoi E. G. Gonç.), so far known to be endemic to the Espirito Santo State, Brazil, are here described and illustrated for the first time. Philodendron bernardopazii has been traded as an ornamental plant for more than 30 years, as one of several species popularly called Philodendron"Santa Leopoldina", because of the Brazilian county where it has been collected. This new species is so far known from two cultivated stocks, both supposedly collected at the same location (around the village of Santa Leopoldina) and if it still exists in nature, it is probably threatened. Philodendron ricardoi has only been observed on rocks around the village of Estrela do Norte where huge populations can be seen growing in rocky outcrops in open areas. © 2011 The Authors.

Goncalves E.G.,Jardim Botanico Inhotim
Willdenowia | Year: 2011

Anthurium truncatum is published as a new name for the Brazilian A. brachypodum G. M. Barroso of 1957, because the latter name was preoccupied by the Ecuadorian A. brachypodum Sodiro of 1901. A. truncatum is a rare species, only known from the type collection and a recent collection made 15 km away from the type locality. It is re-described and illustrated, and its sectional relationship is discussed. © 2011 BGBM Berlin-Dahlem.

Goncalves E.G.,Jardim Botanico Inhotim
Systematic Botany | Year: 2012

The monotypic genus Lorenzia E. G. Gonç. (Araceae Spathicarpeae), with the type species Lorenzia umbrosa E. G. Gonç. is described and illustrated. It was collected in 2003 in Amapá state (Northern Brazil). Its novelty was predicted based on molecular phylogeny, but it was not until a cultivated specimen flowered in 2010 that was it possible to confirm its diagnostic morphological features. Evolutionary relationships (based on cpDNA marker matK) are discussed. Lorenzia is known only from a single remote locality in Serra do Navio, a moderately hilly portion of the Amazon, although it is possible that it also occurs in adjacent French Guiana. © Copyright 2012 by the American Society of Plant Taxonomists.

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