Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro

Rio de Janeiro, Brazil

Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro

Rio de Janeiro, Brazil
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Pederneiras L.C.,Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro | Romaniuc-Neto S.,Institute Botanica | Mansano V.D.F.,Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro
Systematic Botany | Year: 2017

Ficus latipedunculata is a new species of Ficus sect. Pharmacosycea, occurring in the Brazilian Atlantic Forest, here described and illustrated. The new species shows similarities with F. adhadotifolia, F. ernanii, and F. vermifuga but differs mainly by the shape of the peduncle and basal bracts. © Copyright 2017 by the American Society of Plant Taxonomists.


Pederneiras L.C.,Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro | Mansano V.D.F.,Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro | Romaniuc-Neto S.,Institute Botanica
Phytotaxa | Year: 2017

Ficus subg. Pharmacosycea sect. Pharmacosycea (Moraceae, Rosales) is a monophyletic and neotropical plant group characterized mainly by having a syconia with three basal bracts and male flowers with two stamens. Colombia has the largest diversity of Ficus but taxonomic studies on this group are scant, thus we aimed to revise the taxonomy of F. sect. Pharmacosycea. This study is based on fieldwork, examination of herbarium material and literature. Pharmacosycea in Colombia comprises 21 species, 14 are commonly known: F. apollinaris, F. carchiana, F. crassiuscula, F. dewolfii, F. dulciaria, F. gigantosyce, F. insipida, F. maxima, F. mutisii, F. pulchella, F. rieberiana, F. segoviae, F. tonduzii, and F. yoponensis; and six have been treated as synonyms previously: F. aequatorialis, F. macrosyce, F. mexicana, F. santanderana, F. torresiana and F. ulei. Ten lectotypes and two neotypes were designated here. © 2017 Magnolia Press.


Valadares R.T.,Federal University of Rio de Janeiro | Coelho M.A.N.,Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro
Phytotaxa | Year: 2017

Anthurium idimae is described from Espírito Santo and Rio de Janeiro states, in Southeastern Brazil. During the floristic survey of Araceae family in the Atlantic Forest, we found an unknown species with an intriguing combination of intermediate characteristics among A. cleistanthum, A. truncatum, A. molle, and A. cachoeirense. We described and illustrated the new species, including a comparative analysis of characters that distinguishes it from similar species, and also provide comments about its ecology, distribution and conservation. © 2017 Magnolia Press.


PubMed | Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro, Federal University of Juiz de fora and Federal University of Viçosa
Type: Journal Article | Journal: Brazilian journal of biology = Revista brasleira de biologia | Year: 2016

This study aimed to evaluate the variation in the levels of proline, oxidative metabolism and photosynthetic pigments in plants of Pitcairnia encholirioides grown in vitro under different conditions and after acclimatization. The analyses were performed after 150 days of in vitro cultivation in MS media supplemented with 10 M GA3 or 0.2 M NAA, sucrose at 15 or 30 g L-1, in test tubes which allowed gas exchange or in a hermetically sealed system, and 180 days after acclimatization. The in vitro maintenance in hermetically sealed flasks, with GA3 and 15 g L-1 sucrose had adverse metabolic effects, which was demonstrated by the lower proline and photosynthetic pigments accumulation and by the increase in antioxidant enzymes activities. After acclimatization, differences for proline and photosynthetic pigments were no longer found and the enzymatic activities ranged unevenly. The results suggest that the in vitro cultivation in media with 0.2 M NAA and 30 g L-1 sucrose, in test tubes capped with closures which allowed gas exchange, is more suitable for micropropagation of P. encholirioides, providing a prolonged maintenance of in vitro cultures and plantlets with superior quality for ex vitro development.


PubMed | Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro, Federal University of Juiz de fora and Federal University of Viçosa
Type: | Journal: Brazilian journal of biology = Revista brasleira de biologia | Year: 2016

This study aimed to evaluate the variation in the levels of proline, oxidative metabolism and photosynthetic pigments in plants of Pitcairnia encholirioides grown in vitro under different conditions and after acclimatization. The analyses were performed after 150 days of in vitro cultivation in MS media supplemented with 10 M GA3 or 0.2 M NAA, sucrose at 15 or 30 g L-1, in test tubes which allowed gas exchange or in a hermetically sealed system, and 180 days after acclimatization. The in vitro maintenance in hermetically sealed flasks, with GA3 and 15 g L-1 sucrose had adverse metabolic effects, which was demonstrated by the lower proline and photosynthetic pigments accumulation and by the increase in antioxidant enzymes activities. After acclimatization, differences for proline and photosynthetic pigments were no longer found and the enzymatic activities ranged unevenly. The results suggest that the in vitro cultivation in media with 0.2 M NAA and 30 g L-1 sucrose, in test tubes capped with closures which allowed gas exchange, is more suitable for micropropagation of P. encholirioides, providing a prolonged maintenance of in vitro cultures and plantlets with superior quality for ex vitro development.


Temponi L.G.,West Parana State University | Nadruz Coelho M.A.,Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro
Phytotaxa | Year: 2014

Two new species of Anthurium endemic to Rio de Janeiro, southeastern Brazil, are described. Anthurium cronembergerae and A. sakuraguianum occur in humid areas in the Atlantic Forest. Descriptions and illustrations are provided, together with commentary on geographic distribution, ecology, flowering and fruiting phenology and conservation status. Comparisons are made with other similar Brazilian species of Anthurium section Urospadix, to which the two new species are assigned. © 2014 Magnolia Press.


The occurrence of Alouatta guariba clamitans in the Itatiaia National Park (PNI) are considered rare. For over 70 years an epizootic outbreak of yellow fever almost caused the local extinction of this species and since then only one record by direct observation was obtained. In this study, records were obtained by direct observation of a group of four adults, one male and three females, and an infant in forest environment (ca. 1200m). One of the females presented anomaly in the coloration, characterized as leucism. A record of solitary adult male was held in high altitude grasslands (2450m). It is possible that the fault is related to the low density of the species, similar to that reported in other studies. The case record in high altitude, which can be considered the highest for primates in the country, suggests expanding the occurrence of possibilities and use area for the species. The monitoring of this species is to be continuously executed, including higher areas, in order to obtain accurate estimates of density. The performance of activities for its conservation, such as the translocation of individuals from surrounding areas to the PNI should be assessed, to avoid their possible local extinction. © 2016, Universidade Federal do Rio de Janeiro (UFRJ). All rights reserved.


Moura T.M.,University of Campinas | Lewis G.P.,Herbarium | Mansano V.F.,Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro | Tozzi A.M.G.A.,University of Campinas
Kew Bulletin | Year: 2013

Summary: Three new species of Mucuna from South America are described and illustrated. All present a morphological characteristic that is restricted to some neotropical species of this genus: a condensed primary inflorescence axis, with all the flowers closely inserted at the inflorescence apex. M. argentea occurs in Colombia, Ecuador and Peru, M. klitgaardiae in Ecuador and Peru, whilst M. cajamarca is endemic to Peru. These three new species highlight the diversity and high endemism of Mucuna in South America. © 2012 The Board of Trustees of the Royal Botanic Gardens, Kew.


Pederneiras L.C.,Institute Botanica | Pederneiras L.C.,Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro | Neto S.R.,Institute Botanica
Systematic Botany | Year: 2015

A new species of Ficus sect. Pharmacosycea, occurring in the Venezuelan Amazon, is here described and illustrated as Ficus crateriformis Pederneiras and Romaniuc. The new species shows similarities with F. carvajalii, F. macrosyce and F. pulchella although it is characterized mainly by the crateriform apex of the syconium, and leaf blades 12-19 cm long with 19-23 pairs of lateral veins. Discussions on taxonomy and geographic distribution are provided, as well as an identification key to the species in Venezuela. © Copyright 2015 by the American Society of Plant Taxonomists.


Pederneiras L.C.,Institute Botanica | Romaniuc-Neto S.,Institute Botanica | Mansano V.D.F.,Institute Pesquisa Do Jardim Botanico Do Rio Of Janeiro
Systematic Botany | Year: 2015

Ficus subg. Pharmacosycea sect. Pharmacosycea has never been comprehensively sampled in previous phylogenetic analyses of Ficus. The published phylogenies have focused mostly on the study of the whole genus, with a sampling of only a few taxa fromthis group. Our study represents the first molecular phylogenetic analysis focusing on this section, including 27 terminals representing 20 of its 35 species and 31 other species of Ficus. The analyses of three nuclear DNA sequences (ITS, G3pdh, and ETS) add considerably to our knowledge of the phylogenetic relationships within this peculiar section, and lead to proposed taxonomicmodifications. The monophyly of this section, aswell as its position as sister to the rest of Ficus, is supported by our maximum likelihood and Bayesian analyses. As previously circumscribed, F. subsect. Bergianae is monophyletic, and F. subsect. Petenenses is paraphyletic. A third well-supported clade is sister to the Petenenses-Bergianae clade, characterized by an hemiepiphyc life form. We describe this new subsection here as Ficus subsect. Carautaea. © Copyright 2015 by the American Society of Plant Taxonomists.

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