Navegando por Autor "Parma, Daniele de Freitas"
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Item Anatomical, Morphophysiological and Molecular Characterization of Brazilian Species of Cleomaceae(Universidade Federal de Viçosa, 2021-08-27) Parma, Daniele de Freitas; Nesi, Adriano Nunes; http://lattes.cnpq.br/7123531098285561Cleomaceae is one of the 17 families of the order Brassicales, which comprises 26 genera and about 270 species. This cosmopolitan family has a great morphological and physiological diversity and due it is a sister group of Brassicaceae, to which the model plant Arabidopsis is inserted, it has been the subject of studies in several areas. However, despite being a promising family, there are few species characterized, so far only 15 have been physiologically characterized. Thus, this work aimed to characterize species of Cleomaceae occurring in Brazil. In this sense, visits to herbariums and collections were carried out in various regions in order to better understand the identity, ecology and distribution of each species. Thus, 22 species were sampled. Morphological and molecular characterization, based on five markers, showed that the Tarenaya series are monophyletic (Chapter 1) and that T. siliculifera is morphologically distinct from the species of the genus, so the recognition of a new monotype genus has been proposed (Chapter 2). In addition, we characterized the 22 species in terms of genome size, molecular phylogeny, anatomical, biochemical, and physiological characteristics (Chapter 3). In addition to determining the photosynthetic parameters, biochemical analyzes were performed on the leaves throughout the day (Chapter 4). Interestingly, the C 3 species groups exhibit clear variation in anatomical, physiological and biochemical parameters, suggesting a large natural variation among these species. Furthermore, unrecognized variation in leaf structure and physiology within the species studied indicates varying degrees of development of the C 3 -C 4 photosynthetic mechanism. Furthermore, the Brazilian Cleomaceae accessions characterized here exhibit a high genetic diversity and may represent different stages of development of the photosynthetic mechanism from C 3 to C 4 . Regarding the characterization of the sexual type of each flower (Chapter 5), the 20 morphospecies formed three four groups of sexual expression: andromonoicia, hermaphrodites, and polygamous. In addition, dichogamy and distyly were also observed, however, the species studied are self-compatible. Finally, a compilation of all available information about Cleomaceae is carried out in Chapter 6 in order to identify the characteristics of each group and indicate the advances in each area with the family. Keywords: Cleoserrata. Gynandropsis. Molecular phylogeny. Photosynthesis. Tarenaya.Item Bambuseae (Poaceae, Bambusoideae) no município de Viçosa, Minas Gerais, Brasil(Hoehnea, 2016-07) Parma, Daniele de Freitas; Vinícius-Silva, Ronaldo; Machado, Evandro Pianissola; Santos-Gonçalves, Ana PaulaO presente estudo consiste em um levantamento florístico dos bambus lenhosos (Poaceae: Bambusoideae: Bambuseae) ocorrentes no Município de Viçosa, Zona da Mata mineira. Foram realizadas expedições a fragmentos florestais no Município, no período de fevereiro/2011 a março/2015. São reconhecidos nove táxons pertencentes a dois gêneros Chusquea (duas spp.) e Merostachys (sete spp.). São apresentadas chaves de identificação, descrições, comentários sobre os táxons levantados e o estado de conservação de cada espécie é examinado. É registrada, pela primeira vez, a ocorrência de Merostachys skvortzovii para o Estado de Minas Gerais. Merostachys tatianae, espécie até agora considerada endêmica para o Parque Estadual do Rio Doce, é registrada como ocorrente em outra localidade no Estado. O presente estudo evidencia uma alta diversidade de espécies de Bambuseae na área estudada.Item Growth characterization and chemical composition of the cell wall of native species of bamboos(Universidade Federal de Viçosa, 2017-02-21) Parma, Daniele de Freitas; Gonçalves, Ana Paula Santos; http://lattes.cnpq.br/7123531098285561Bamboos are predominant plants in forest areas and it have become a favorite choice for carbon sequestration to absorb atmospheric CO 2 and restorer additive balance of the Earth’s climate system, due to its high growth rate compared to most other plant species. Furthermore, the bamboos are used to produce pulp and paper or charcoal and active carbon for special purposes. Furthermore, it has ecological and environmental functions in soil erosion control, water conservation and land rehabilitation. Thus, the quantification of its biomass provide among other things, an estimate of cellulosic material provide a potential source of renewable energy and base for carbon sequestration studies. Thus, the aim of this study were (i) Estimate biomass and carbon storage is Merostachys species (M. fischeriana, M. tatianae and), in order to understand its distribution along different compartments (foliage, branches and culm). (ii) Evaluate biomass models according to biometric variables collected - circumference and diameter of the culm at the base and at the height of the breast, total height and number of nodes. (iii) Quantify moisture and carbon content. (iv) Identify and quantify the main components of the culm cell wall - cellulose, hemicellulose, lignin and ash. To quantify the productivity of M. fischeriana, M. tatianae and M. ximenae, twenty individuals of each specie were collected in Atlantic forest area in Southeastern Brazil. The plants were measured, cut, weighed and dried. To quantify the chemical components of the culm cell wall, three samples (base, medium and apex) of each of the five individuals of the three species were lyophilized and homogenized to obtain fine powder (40-60 mesh). The design of nested factors comparing the areas with each other and within each species was used. The allocation of biomass in Merostachys species was higher in the culm, with detection of some interspecific differences. Individual dry biomass correlates strongly with biometric variables the culm base diameter, diameter at breast height and total height. Thus, simple regression models, considering only those independent variables fit well to express the individual total dry weight as the dependent variable. The productivity of Merostachys with culture spaced 3m x 3m is highly competitive with other species of bamboo cultures; even with other plants (i.e. Pinus). Merostachys has an average daily growth rate of 0.07 m, reaching its maximum height in four months and its full development, with leaves and branches, 6-9 months. The moisture content is decreasing from the base toward the apex, as well as in relation to age. We verified that there was no significant difference between the content of cellulose, hemicellulose, lignin and ash between species of Merostachys as well as between the base, middle and apex. However, only M. tatianae presented significant differences (p = 0.0026) for the lignin concentration between regions. The average concentration of cellulose in Merostachys fischeriana, M. tatianae and M. ximenae ranged from 78-82%. In Merostachys the value found for holocellulose was higher than 98%, being this value related to the cellulose concentration, since the observed hemicellulose content is congruent with that verified for other species of bamboo. The lignin content was 0.86-1.06%. The ashes concentration between 0.52-0.68% was similar to that observed for some species of Eucalyptus. Studies of quantification of the chemical components of bamboo cell wall are rare. Comprehensive knowledge of biomass and chemical components in the bamboo species will facilitate the use of materials in the forestry industrial sector and help to enhance their utilization in the chemical and biochemical related industry. In addition, these results can be supporting taxonomic and ecological studies.Item Merostachys Spreng. (Poaceae: Bambusoideae: Bambuseae: Arthrostylidiinae) na Mata Atlântica do estado de Minas Gerais, Brasil(Hoehnea, 2018-01) Vinícius-Silva, Ronaldo; Parma, Daniele de Freitas; Jesus-Costa, Cristielle de; Clark, Lynn G.; Santos-Gonçalves, Ana PaulaEste trabalho consiste em um estudo florístico das espécies de Merostachys Spreng. (Bambusoideae: Arthrostylidiinae) ocorrentes na Mata Atlântica do Estado de Minas Gerais, e foi realizado com base em coletas de material botânico em Unidades de Conservação e propriedades particulares, além da análise de espécimes depositados em herbários nacionais e estrangeiros. Foram catalogados 22 táxons. Merostachys leptophylla e M. calderoniana foram registradas no Estado pela primeira vez no presente estudo; M. tatianae, M. espessa, M. fimbriolaminata, M. ramosa e M. ximenae são, até agora, registradas apenas para o Estado de Minas Gerais. São apresentadas chave de identificação, descrições e ilustrações, bem como comentários sobre morfologia, ciclo reprodutivo, habitat e distribuição geográfica das espécies.