16 documents found, page 1 of 2
Overcoming dormancy of Passiflora elegans Mast. (Passifloraceae) seeds
Silva, Aparecida Leonir da; Hilst, Paulo César; Dias, Denise Cunha Fernandes dos Santos; Rogalski, MarceloThe seeds of Passiflora present low and ununiform germination, due to the presence of seed dormancy, so this dormancy must be overcome by an efficient method that increases germination rates. This study was conducted to evaluate the efficiency of methods for overcoming dormancy of Passiflora elegans seeds. Thirty-five ripe fruits were collected in the municipality of Getúlio Vargas, Rio Grande do Sul in Decembe...
Photosynthetic induction and activity of enzymes related to carbon metabolism: ...
Martins, Samuel Cordeiro Vitor; Detmann, Kelly Coutinho; Reis, Josimar Vieira dos; Pereira, Lucas Felisberto; Sanglard, Lílian Maria Vincis PereiraThe shade leaves of coffee (Coffea arabica L.) apparently retain a robust photosynthetic machinery that is comparable to that of sun leaves and can fix CO2 at high rates when subjected to high light intensities. This raises the question of why the coffee plant would construct such a robust photosynthetic machinery despite the low photosynthetic rates achieved by the shade leaves at low light supply. Here, we gr...
Phylogeography of plastid DNA sequences suggests post-glacial southward demogra...
Rogalski, Marcelo; Stefenon, Valdir Marcos; Klabunde, Gustavo; Lemos, Rafael Plá Matielo; Nodari, Rubens OnofreDespite the high diversity of the Southern South American environments, the patterns and processes driving both their species diversity and demographic history are still poorly known and are a challenging task. In this study, we evaluate plastid DNA sequences of the conifer species Araucaria angustifolia aiming to (i) assess the species genetic structure within its main range of occurrence, (ii) infer its popul...
Phylogenetic inference and SSR characterization of tropical woody bamboos tribe...
Rogalski, Marcelo; Vieira, Leila do Nascimento; Anjo, Karina Goulart dos; Faoro, Helisson; Fraga, Hugo Pacheco de Freitas; Greco, Thiago MachadoThe complete plastome sequencing is an efficient option for increasing phylogenetic resolution and evolutionary studies, as well as may greatly facilitate the use of plastid DNA markers in plant population genetic studies. Merostachys and Guadua stand out as the most common and the highest potential utilization bamboos indigenous of Brazil. Here, we sequenced the complete plastome sequences of the Brazilian Gua...
The Linum usitatissimum L. plastome reveals atypical structural evolution, new ...
Santana Lopes, Amanda de; Pacheco, Túlio Gomes; Santos, Karla Gasparini dos; Vieira, Leila do Nascimento; Guerra, Miguel Pedro; Nodari, Rubens OnofreFlax (Linum usitatissimum L.) is an economically important crop used as food, feed, and industrial feedstock. It belongs to the Linaceae family, which is noted by high morphological and ecological diversity. Here, we reported the complete sequence of flax plastome, the first species within Linaceae family to have the plastome sequenced, assembled and characterized in detail. The plastome of flax is a circular D...
Genetic, evolutionary and phylogenetic aspects of the plastome of annatto (Bixa...
Pacheco, Túlio Gomes; Lopes, Amanda de Santana; Viana, Gélia Dinah Monteiro; Silva, Odyone Nascimento da; Silva, Gleyson Morais da; Rogalski, MarceloAnnatto (Bixa orellana L.) is a native species of tropical Americas with center of origin in Brazilian Amazonia. Its seeds accumulate the apocarotenoids, bixin and norbixin, which are only found in high content in this species. The seeds of B. orellana are commercially valued by the food industry because its dyes replace synthetic ones from the market due to potential carcinogenic risks. The increasing consumpt...
The complete plastome of macaw palm [Acrocomia aculeata (Jacq.) Lodd. ex Mart.]...
Santana Lopes, Amanda de; Pacheco, Túlio Gomes; Nimz, Tabea; Vieira, Leila do Nascimento; Guerra, Miguel P.; Nodari, Rubens O.Macaw palm is a native species from tropical and subtropical Americas. It shows high production of oil per hectare reaching up to 70% of oil content in fruits and an interesting plasticity to grow in different ecosystems. Its domestication and breeding are still in the beginning, which makes the development of molecular markers essential to assess natural populations and germplasm collections. Therefore, we seq...
Efficient and new method for Tectona grandis in vitro regeneration
Rogalski, Marcelo; Tambarussi, Evandro V.; Galeano, Esteban; Brondani, Gilvano Ebling; Martin, Valentina de Fatima de; Silva, Lucas Américo daO artigo não contém resumo em português.; The aim of this study was to develop a shoot regeneration protocol for Tectona grandis by examining the effects of pretreatments, regeneration culture medium, adventitious rooting, and acclimatization. The best organogenic potential was achieved when hypocotyls and cotyledonary segments from seedlings germinated on a medium containing TDZ, were cultured for four weeks o...
Influence of antibiotics on indirect organogenesis of Teak
Rogalski, Marcelo; Tambarussi, Evandro Vagner; Nogueira, Fábio Tebaldi Silveira; Brondani, Gilvano Ebling; Martin, Valentina de Fátima DeAgrobacterium is the largest method employed to transform woody plants. The bacterium is required to introduce the transgene into the plant nuclear genome. After transferring T-DNA to the plant cell, the bacteria affect plant growth negatively and have to be eliminated from plant tissue culture medium through the use of antibiotics. The effect of different antibiotics (timentin, cefotaxime and carbenicillin) on...
The Crambe abyssinica plastome: Brassicaceae phylogenomic analysis, evolution o...
Lopes, Amanda de Santana; Pacheco, Túlio Gomes; Vieira, Leila do Nascimento; Guerra, Miguel Pedro; Nodari, Rubens Onofre; Souza, Emanuel Maltempi deCrambe abyssinica is an important oilseed crop that accumulates high levels of erucic acid, which is being recognized as a potential oil platform for several industrial purposes. It belongs to the family Brassicaceae, assigned within the tribe Brassiceae. Both family and tribe have been the subject of several phylogenetic studies, but the relationship between some lineages and genera remains unclear. Here, we r...