Navegando por Autor "Santos, Marcone Moreira"

Agora exibindo 1 - 4 de 4

Ciências “ômicas” aplicadas à análise de sementes
(2020-11-05) Santana, Bárbara Jossany Gomes de; Santos, Marcone Moreira; Silva, Joselane Príscila Gomes da; http://lattes.cnpq.br/8028063388524508; http://lattes.cnpq.br/3284707164193715; http://lattes.cnpq.br/7128880355985474
Seed analysis consists of the evaluation of seed quality through the use of different techniques for the most varied purposes. Many tools can be used, among them the “omics” sciences. This set of approaches can be considered a substantial technological advance for seed analysis. Within the techniques that are part of this set of science, the following stand out: transcriptomics (study of genetic transcripts, RNA‟s), proteomics (study of proteins), metabolomics (study of metabolites) and lipidomics (study of lipids). However, in relation to the forest seed analysis, these techniques are still not widespread. Thus, the objective of this work was to develop an exploratory study on the use of “omics” sciences for seed analysis, highlighting their objectives and technologies used. To this end, a database was created using Google academic as a search tool. Search terms were established in Portuguese and in English, which were: transcriptoma, proteoma, metaboloma, lipidoma para análise de sementes e para sementes florestais, transcriptomic, proteomic, metabolomic, lipidomic for seeds, for forest seeds analysis, for seeds analysis. The selected studies were grouped in tables according to the technique used: Transcriptomics, Proteomics, Metabolomics and Lipidomics. Species, purpose of the study, classification regarding use (Agricultural, Forestry, Medicinal and Others), origin of the studies (national or international) and year of publication were also identified. A total of 105 studies were analyzed, in which 64 corresponded to agricultural species, 18 forestry, 13 others and 10 were classified as medicinal. Between all the studies analyzed, 77% corresponded to international studies. Among the national studies, the most expressive techniques were: Transcriptomics and Proteomics with 38% and 28%, respectively. Regarding the year of publication, the oldest was Proteomics, in 2001. Regarding the classification of use for the species studied, the largest number of studies was developed with agricultural species, due to the greater development and investments of the sector, which has more resources for investment in advanced technologies. However, even if forest species are less studied, it is observed that the field of omics is a promising and developing area, and may have several applications in the future. Therefore, the importance of expanding investments in research in the field of forest seeds is emphasized, especially for native species, whose knowledge is incipient in view of the diversity and importance of species.
Diagnóstico de redes de sementes florestais no Brasil
(2024-02-07) Silva, Ana Clara Santana; Santos, Marcone Moreira; http://lattes.cnpq.br/3284707164193715; http://lattes.cnpq.br/5674898094215400
Forest seed networks play a fundamental role in the preservation and restoration of forest ecosystems, representing initiatives aimed at conserving native plant species in different biomes. These networks work collaboratively, with the active participation of various social actors, such as local communities, non-governmental organizations (NGOs), research institutions and government entities. The objective of this study was to carry out a comprehensive mapping of forest seed networks in Brazil, with the aim of understanding their distribution, structure and impact on the conservation and restoration of forest ecosystems. For this survey, four methods were adopted: research on the networks' web pages, analysis of Instagram profiles and application of questionnaires, consultation of RENASEM/MAPA with specific filters and analysis of academic articles on Scholar Google, using specific keywords. As a result, it was possible to map twelve forest seed networks in Brazil, identifying four main actors involved. A significant concentration of these networks was evident in the Center-West and Southeast regions of the country, with a significant diversity of native species from the Cerrado, Atlantic Forest and Amazon biomes. The main research institutions and non-governmental organizations were highlighted as the main actors involved in this context.
Memória hídrica (stress imprint) em sementes: impacto ecofisiológico na germinação e no crescimento inicial de Sesbania virgata (Cav.) Poir
(2024-03-11) Menezes, Mariane Oliveira; Santos, Marcone Moreira; Silva, Carlos Luiz da; http://lattes.cnpq.br/9191002336120487; http://lattes.cnpq.br/3284707164193715; http://lattes.cnpq.br/1484285198376822
The present study investigated the effects of hydraulic memory on the eco-physiological aspects of germination and the initial development of S. virgata seedlings. Employing a mixed-method approach that combined quantitative and qualitative methods, along with rigorous statistical analysis including tests such as Tukey, ANOVA, and regression analysis, a randomized experiment with various treatments was conducted. Initially, a literature review was conducted to understand the species' importance and the effects of hydraulic memory. Subsequently, laboratory tests were performed to overcome seed dormancy, determine moisture content, and establish the imbibition curve. Additionally, the germination rate of seeds subjected to polyethylene glycol 6000 (PEG 6000) solution was evaluated to simulate water stress, both with seeds that underwent intermittent hydration cycle (IHC) and those that did not undergo this process. Following laboratory analyses, nursery analyses were conducted with two distinct treatments (seeds subjected to IHC and seeds that did not undergo this process), under different watering regimes. Evaluated parameters included shoot height and diameter, root size, dry and fresh weight, Dickson's quality index, biomass allocation, and seedling survival rate. The results indicated the possible presence of hydraulic memory in the seedlings and demonstrated that water deficit negatively affects germination. However, intermittent hydration showed a positive effect on seed germination under water deficit conditions, offering a promising strategy to enhance plant survival in adverse environments.
Relatório final de atividades do Estágio Supervisionado Obrigatório em Engenharia Florestal: Gestão e Monitoramento Ambiental Urbano em Recife, PE
(2022) Calixto, Shermesson Henrique Mota; Santos, Marcone Moreira; http://lattes.cnpq.br/3284707164193715; http://lattes.cnpq.br/3349917891877024