150 Works

Data from: Geological and climatic changes in quaternary shaped the evolutionary history of Calibrachoa heterophylla, an endemic South-Atlantic species of petunia

Geraldo Mäder, Jéferson N. Fregonezi, Aline P. Lorenz-Lemke, Sandro L. Bonatto & Loreta B. Freitas
Background: The glacial and interglacial cycles that characterized the Quaternary greatly affected the distribution and genetic diversity of plants. In the Neotropics, few phylogeographic studies have focused on coastal species outside of the Atlantic Rainforest. Climatic and sea level changes during the Quaternary played an important role in the evolutionary history of many organisms found in coastal regions. To contribute to a better understanding of plant evolution in this environment in Southern South America, we...

Data from: The role of chromosomal rearrangements and geographical barriers in the divergence of lineages in a South American subterranean rodent (Rodentia: Ctenomyidae: Ctenomys minutus)

Carla M. Lopes, Simone S. F. Ximenes, Adriana Gava & Thales R. O. De Freitas
Identifying factors and the extent of their roles in the differentiation of populations is of great importance for understanding the evolutionary process in which a species is involved. Ctenomys minutus is a highly karyotype- polymorphic subterranean rodent, with diploid numbers ranging from 42 to 50 and autosomal arm numbers ranging from 68 to 80, comprising a total of 45 karyotypes described so far. This species inhabits the southern Brazilian coastal plain, which has a complex...

Worldwide evidence of a unimodal relationship between productivity and plant species richness

Lauchlan H. Fraser, Jason Pither, Anke Jentsch, Marcelo Sternberg, Martin Zobel, Diana Askarizadeh, Sandor Bartha, Carl Beierkuhnlein, Jonathan A. Bennett, Alex Bittel, Bazartseren Boldgiv, Ilsi I. Boldrini, Edward Bork, Leslie Brown, Marcelo Cabido, James Cahill, Cameron N. Carlyle, Giandiego Campetella, Stefano Chelli, Ofer Cohen, Anna-Maria Csergo, Sandra Diaz, Lucas Enrico, David Ensing, Alessandra Fidelis … & Szilárd Szentes
The search for predictions of species diversity across environmental gradients has challenged ecologists for decades. The humped-back model (HBM) suggests that plant diversity peaks at intermediate productivity; at low productivity few species can tolerate the environmental stresses, and at high productivity a few highly competitive species dominate. Over time the HBM has become increasingly controversial, and recent studies claim to have refuted it. Here, by using data from coordinated surveys conducted throughout grasslands worldwide and...

Data from: Phylogenetic and morphological relationships between nonvolant small mammals reveal assembly processes at different spatial scales

André Luís Luza, Gislene Lopes Gonçalves & Sandra Maria Hartz
The relative roles of historical processes, environmental filtering, and ecological interactions in the organization of species assemblages vary depending on the spatial scale. We evaluated the phylogenetic and morphological relationships between species and individuals (i.e., inter- and intraspecific variability) of Neotropical nonvolant small mammals coexisting in grassland-forest ecotones, in landscapes and in regions, that is, three different scales. We used a phylogenetic tree to infer evolutionary relationships, and morphological traits as indicators of performance and...

Data from: De novo assembly and characterization of leaf and floral transcriptomes of the hybridizing bromeliad species (Pitcairnia spp.) adapted to Neotropical Inselbergs

C. Palma-Silva, M. Ferro, M. Bacci & A. C. Turchetto-Zolet
We present the leaf and floral transcriptomes of two hybridizing bromeliad species that differ in their major pollinator systems. Here we identified candidate genes responsible for pollinator attraction and reproductive isolation in these two species. We searched for candidate genes involved in floral traits, such as color. Approximately 34 Gbp of cDNA sequence data were produced from both tissues and species, resulting in a total of 424,506,914 raw reads. The de novo-assembled transcriptomes consisted of...

Data from: Genomic signatures of paleodrainages in a freshwater fish along the southeastern coast of Brazil: genetic structure reflects past riverine properties

Andrea T. Thomaz, Luiz R. Malabarba & L. Lacey Knowles
Past shifts in connectivity in riverine environments (for example, sea-level changes) and the properties of current drainages can act as drivers of genetic structure and demographic processes in riverine population of fishes. However, it is unclear whether the same river properties that structure variation on recent timescales will also leave similar genomic signatures that reflect paleodrainage properties. By characterizing genetic structure in a freshwater fish species (Hollandichthys multifasciatus) from a system of basins along the...

Data from: Local biodiversity erosion in South Brazilian grasslands under moderate levels of landscape habitat loss

Ingmar R. Staude, Eduardo Vélez-Martin, Bianca O. Andrade, Luciana Regina Podgaiski, Ilsi I. Boldrini, , Valério D. Pillar & Gerhard E. Overbeck
1.Habitat loss is one of the greatest threats to biodiversity, exerting negative effects on the ecological viability of natural vegetation remnants. The South Brazilian grasslands belong to one of the largest temperate grassland regions in the world, but have lost 50% of their natural extent in the past 35 years. To date, there is no empirical evidence for the effects of habitat loss on these grasslands’ biological diversity, undermining their conservation. 2.Using data from a...

Data from: Phylogenetic systematics of subtribe Spiranthinae (Orchidaceae: Orchidoideae: Cranichideae) based on nuclear and plastid DNA sequences of a nearly complete generic sample

Gerardo A. Salazar, Joao A.N. Batista, Lidia I. Cabrera, Cassio Van Den Berg, W. Mark Whitten, Eric C. Smidt, Cristiano R. Buzatto, Rodrigo B. Singer, Gunter Gerlach, Rolando Jimenez-Machorro, Jose A. Radins, Irma S. Insaurralde, Leonardo R.S. Guimaraes, Fabio De Barros, Francisco Tobar, Jose L. Linares, Ernesto Mujica, Robert L. Dressler, Mario A. Blanco, Eric Hagsater & Mark W. Chase
Subtribe Spiranthinae is the most species-rich lineage of terrestrial Neotropical orchids, encompassing > 500 species and 40 genera. We conducted maximum parsimony and maximum likelihood phylogenetic analyses of DNA sequence data of plastid matK-trnK and trnL-trnF and nuclear ribosomal ITS sequences for 36 genera and 182 species of Spiranthinae plus appropriate outgroups. The results strongly support monophyly of Spiranthinae (minus Discyphus, Discyphinae and Galeottiella, Galeottiellinae) and five major lineages, namely monospecific Cotylolabium (sister to the...

Global gradients in intraspecific variation in vegetative and floral traits are partially associated with climate and species richness

Jonas Kuppler, Cécile H. Albert, Gregory M. Ames, W. Scott Armbruster, Gerhard Boenisch, Florian C. Boucher, Diane R. Campbell, Liedson T. Carneiro, Eduardo Chacón-Madrigal, Brian J. Enquist, Carlos R. Fonseca, José M. Gómez, Antoine Guisan, Pedro Higuchi, Dirk N. Karger, Jens Kattge, Michael Kleyer, Nathan J. B. Kraft, Anne-Amélie C. Larue-Kontić, Amparo Lázaro, Martin Lechleitner, Deirdre Loughnan, Vanessa Minden, Ülo Niinemets, Gerhard E. Overbeck … & Robert R. Junker
Aim Intraspecific trait variation (ITV) within natural plant communities can be large, influencing local ecological processes and dynamics. Here, we shed light on how ITV in vegetative and floral traits responds to large-scale abiotic and biotic gradients (i.e. climate and species richness). Specifically, we tested if associations of ITV with temperature, precipitation and species richness were consistent with any of from four hypotheses relating to stress-tolerance and competition. Furthermore, we estimated the degree of correlation...

Female-driven intersexual coevolution in beetle genitalia

Bruno Genevcius, Joanna Baker, Filipe Bianchi & Adriana Marvaldi
Genital coevolution is a pervasive phenomenon as changes in one sex tend to impose fitness consequences on the other generating sexual conflict. Sexual conflict is often thought to cause stronger selection on males due to the Darwin-Bateman’s anisogamy paradigm. However, recent studies have demonstrated that female genitalia may be equally elaborated and perform diverse extra-copulatory functions. These characteristics suggest that female genitals can also be primary targets of selection, especially where natural selection acts on...

Data from: The influence of spatial sampling scales on ant-plant interaction network architecture

Wesley Dáttilo, Jeferson Vizentin-Bugoni, Vanderlei J. Debastiani, Pedro Jordano & Thiago J. Izzo
1.Despite great interest in metrics to quantify the structure of ecological networks, the effects of sampling and scale remain poorly understood. In fact, one of the most challenging issues in ecology is how to define suitable scales (i.e., temporal or spatial) to accurately describe and understand ecological systems. 2.Here, we sampled a series of ant‐plant interaction networks in the southern Brazilian Amazon rainforest in order to determine whether the spatial sampling scale, from local to...

Where are the bats? An environmental complementarity analysis in a megadiverse country

Ludmilla Aguiar, Maria João Ramos Pereira, Marlon Zortea, Ricardo Machado, Ludmilla M. S. Aguiar, Maria João R. Pereira, Marlon Zortéa & Ricardo B. Machado
Aim: Field surveys are necessary to overcome Wallacean shortfalls. The task is even more important when human pressure on tropical – megadiverse – ecosystems is considered. However, due to financial constraints, spatial and temporal prioritization is required. Here we used the concept of environmental complementarity to identify non-surveyed regions for bats that are environmentally different from other already surveyed regions. We highlighted regions in Brazil where field inventories could be conducted to locate new occurrences...

Data from “Climate and large-sized trees, but not diversity, drive above-ground biomass in subtropical forests”. Forest Ecology and Management. 2021.

Kauane Maiara Bordin, Adriane Esquivel-Muelbert, Rodrigo Scarton Bergamin, Joice Klipel, Rayana Caroline Picolotto, Marcelo Araújo Frangipani, Katia Janaina Zanini, Marcus Vinicius Cianciaruso, João André Jarenkow, Cristiane Follmann Jurinitz, Martin Molz, Pedro Higuchi, Ana Carolina da Silva & Sandra Cristina Müller

Extending the footprint record of Pareiasauromorpha to the Cisuralian: earlier appearance and wider palaeobiogeography of the group

Lorenzo Marchetti, Sebastian Voigt, Eudald Mujal, Spencer Lucas, Heitor Francischini, Josep Fortuny & Vincent Santucci
Pareiasauromorpha is one of the most important tetrapod groups of the Permian. Skeletal evidence suggests a late Kungurian origin in North America, whereas the majority of occurrences come from the Guadalupian and Lopingian of South Africa and Russia. Pareiasauromorpha footprints include the ichnogenus Pachypes, that is, however, unknown from strata older than late Guadalupian. A revision of several Pachypes-like footprints from the Cisuralian–Guadalupian of Europe and North America confirm the occurrence of this ichnogenus and...

Additional file 6 of Early effects of LPS-induced neuroinflammation on the rat hippocampal glycolytic pathway

Adriana Fernanda K. Vizuete, Fernanda Fróes, Marina Seady, Caroline Zanotto, Larissa Daniele Bobermin, Ana Cristina Roginski, Moacir Wajner, André Quincozes-Santos & Carlos Alberto Gonçalves
Additional file 6: Figure S6. Effects of metabolic and neuroinflammation inhibitors on LPS-induced oxidative stress in acute hippocampal slices. GSH content and total reactive oxygen species (DCF) were measured by a fluorescent method. The inhibitors 3PO (20 μM) (A-B), fluorocitrate (FLC, 10 μM) (C-D), arundic acid (AA, 100 μM) (E–F), minocycline (Mino,10 μM) (G-H), and MCC950 (MCC, 10 μM)(I-J) reversed the reduction in GSH content and elevation in total reactive oxygen species (DCF) promoted by...

Additional file 6 of Early effects of LPS-induced neuroinflammation on the rat hippocampal glycolytic pathway

Adriana Fernanda K. Vizuete, Fernanda Fróes, Marina Seady, Caroline Zanotto, Larissa Daniele Bobermin, Ana Cristina Roginski, Moacir Wajner, André Quincozes-Santos & Carlos Alberto Gonçalves
Additional file 6: Figure S6. Effects of metabolic and neuroinflammation inhibitors on LPS-induced oxidative stress in acute hippocampal slices. GSH content and total reactive oxygen species (DCF) were measured by a fluorescent method. The inhibitors 3PO (20 μM) (A-B), fluorocitrate (FLC, 10 μM) (C-D), arundic acid (AA, 100 μM) (E–F), minocycline (Mino,10 μM) (G-H), and MCC950 (MCC, 10 μM)(I-J) reversed the reduction in GSH content and elevation in total reactive oxygen species (DCF) promoted by...

DoE-assisted development and validation of a thin layer chromatography method for optimized separation of major cannabinoids in Cannabis sativa L. samples

Maíra Ribeiro de Souza, Renata Pereira Limberger & Amélia Teresinha Henriques
As interest in the medical use of cannabis and cannabinoids rises, the need to establish appropriate quality specifications for them also becomes evident. Consequently, various methods applied to the analyses of cannabinoids in C. sativa have been reported. Among the chromatographic techniques used for this purpose, TLC stands out as a suitable alternative for fingerprint assessment. Nevertheless, structural similarity between cannabinoids imposes some analytical challenges. In this context, DoE-assisted optimization may favor achieving an adequate...

Fast diversification through a mosaic of evolutionary histories characterizes the endemic flora of ancient Neotropical mountains

Thais Vasconcelos, Suzana Alcantara, Caroline Andrino, Félix Forest, Marcelo Reginato, Marcelo Simon & José Pirani
Mountains are among the most biodiverse areas on the globe. In young mountain ranges, exceptional plant species-richness is often associated to recent and rapid radiations linked to the mountain uplift itself. In ancient mountains, however, orogeny vastly precedes the evolution of vascular plants, so species-richness has been explained by species accumulation during long periods of low extinction rates. Here we evaluate these assumptions by analyzing plant diversification dynamicsin thecampo rupestre, an ecosystem associated to pre-Cambrian...

A systematic review and meta-analysis assessing antiretroviral therapy for treatment-experienced HIV adult patients using an optimized background therapy approach: is there evidence enough for a standardized third-line strategy?

Lucas Pitrez Mocellin, Patricia Klarmann Ziegelmann & Ricardo Kuchenbecker
Abstract Background The World Health Organization (WHO) has identified the need for evidence on third-line antiretroviral therapy (ART) for adults living with HIV/AIDS, given that some controversy remains as to the best combinations of ART for experienced HIV-1-infected patients. Therefore, we conducted a systematic review and meta-analysis to (i) assess the efficacy of third-line therapy for adults with HIV/AIDS based on randomized controlled trials (RCT) that adopted the “new antiretroviral (ARV) + optimized background therapy...

Additional file 1 of A systematic review and meta-analysis assessing antiretroviral therapy for treatment-experienced HIV adult patients using an optimized background therapy approach: is there evidence enough for a standardized third-line strategy?

Lucas Pitrez Mocellin, Patricia Klarmann Ziegelmann & Ricardo Kuchenbecker
Additional file 1. Figure. Funnel plot of included articles in thisstudy (squares).

Medical geneticists, genetic diseases and services in Brazil in the age of personalized medicine Supplementary Tables rev2

Carolina Bonilla, Vinicius Albuquerque Sortica, Lavinia Schuler-Faccini, Alicia Matijasevich & Mario C Scheffer
Medical geneticists, genetic diseases and services in Brazil in the age of personalized medicine Supplementary Tables rev2

Medical geneticists, genetic diseases and services in Brazil in the age of personalized medicine Supplementary Figures rev2

Carolina Bonilla, Vinicius Albuquerque Sortica, Lavinia Schuler-Faccini, Alicia Matijasevich & Mario C Scheffer
Medical geneticists, genetic diseases and services in Brazil in the age of personalized medicine Supplementary Figures rev2

Additional file 6 of Management of early-stage triple-negative breast cancer: recommendations of a panel of experts from the Brazilian Society of Mastology

Ruffo Freitas-Junior, Vilmar Marques de Oliveira, Antonio Luiz Frasson, Francisco Pimentel Cavalcante, Fabio Postiglione Mansani, André Mattar, Felipe Pereira Zerwes, Adriana Magalhães de Oliveira Freitas, Alessandra Borba Anton de Souza, Andrea P. Damin, Annamaria Massahud Rodrigues dos Santos, Carlos Alberto Ruiz, Clécio Ênio Murta de Lucena, Eduardo Camargo Millen, Fábio Bagnoli, Felipe Andrade, Frank Lane Braga Rodrigues, Gil Facina, Guilherme Novita, Jose Luiz Pedrini, José Pereira Guará, Leonardo Ribeiro Soares, Marcus Vinicius de Nigro Corpa, Mauro Passos, Nancy Cristina Ferraz de Lucena Ferreira … & Vinicius Milani Budel
Additional file 6: Table 6.1. Comparison between the panelists’ decision-making regarding the questions related to diagnosis prior to and following brainstorming. Table S6.2. Comparison between the panelists’ decision-making regarding the questions related to surgery prior to and following brainstorming.

Additional file 3 of Management of early-stage triple-negative breast cancer: recommendations of a panel of experts from the Brazilian Society of Mastology

Ruffo Freitas-Junior, Vilmar Marques de Oliveira, Antonio Luiz Frasson, Francisco Pimentel Cavalcante, Fabio Postiglione Mansani, André Mattar, Felipe Pereira Zerwes, Adriana Magalhães de Oliveira Freitas, Alessandra Borba Anton de Souza, Andrea P. Damin, Annamaria Massahud Rodrigues dos Santos, Carlos Alberto Ruiz, Clécio Ênio Murta de Lucena, Eduardo Camargo Millen, Fábio Bagnoli, Felipe Andrade, Frank Lane Braga Rodrigues, Gil Facina, Guilherme Novita, Jose Luiz Pedrini, José Pereira Guará, Leonardo Ribeiro Soares, Marcus Vinicius de Nigro Corpa, Mauro Passos, Nancy Cristina Ferraz de Lucena Ferreira … & Vinicius Milani Budel
Additional file 3: Table S3. Summary of the consensus among the panelists following brainstorming.

Data from: Molecular phylogenetics of Maxillaria and related genera (Orchidaceae: Cymbidieae) based on combined molecular data sets

W. Mark Whitten, Mario A. Blanco, Norris H. Williams, Samantha Koehler, Germán Carnevali, Rodrigo B. Singer, Lorena Endara & Kurt M. Neubig
The orchid genus Maxillaria is one of the largest and most common of neotropical orchid genera, but its current generic boundaries and relationships have long been regarded as artificial. Phylogenetic relationships within subtribe Maxillariinae sensu Dressler (1993) with emphasis on Maxillaria s.l. were inferred using parsimony analyses of individual and combined DNA sequence data. We analyzed a combined matrix of nrITS DNA, the plastid matK gene and flanking trnK intron, and the plastid atpB-rbcL intergenic...

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