The cultivation and sale of ornamental plants are dynamic and promising sectors of agribusiness, with some of the highest profitability per cultivated area (Serviço Brasileiro de Apoio às Micro E Pequenas Empresas, 2015). In 2014, the Brazilian supply chain for these plants consisted of 8,248 producers with an average planted area of 1.82 hectares and more than 2,000 species, divided into three main categories: Cut flowers and foliage, potted plants and flowers, and ornamental plants for landscaping (except grass) (Lima Júnior et al., 2015).The cultivation and sale of potted plants and flowers have increased their socioeconomic importance in the country, with desert rose (Adenium spp.) gaining prominence due to its drought resistance, easy maintenance, and the variety of colours and shapes of its flowers, which are generally abundant and long lasting (Oyen, 2006;Varella et al., 2015). Desert rose [Adenium obesum (Forssk.), Roem.
<p>A Teca (<em>Tectona grandis</em>) é uma planta originaria da Ásia e vêm sendo cultivada principalmente nas regiões Norte e Centro Oeste do Brasil. Porém algumas doenças podem provocar danos à produtividade e crescimento desta espécie, dentre estas fitopatologias está à ferrugem. Este trabalho objetivou-se a relatar a ocorrência do fungo <em>Olivea neotectonae</em>, causador da ferrugem na teca, pela primeira vez no Estado de Goiás. Em maio de 2013, foram observadas folhas da teca com sintomas de necroses que posteriormente provocavam desfolha precoce das plantas. Para avaliação inicial, folhas de teca foram coletadas em plantas localizadas na área do Instituto Federal Goiano Câmpus Ceres-GO. Em seguida, estas foram levadas ao laboratório de Microbiologia do Departamento de Ciências Agrárias. Na observação em microscópio óptico, foram visualizadas e medidas as estruturas fúngicas. Diante dos resultados obtidos no presente trabalho, pode-se concluir que o fungo causador de necroses em plantas observadas no estado de Goiás, trata-se do patógeno <em>Olivea neotectonae, </em>agente causal da ferrugem da Teca.</p><p align="center"><strong>Report of teak rust, caused by <em>Olivea neotectonae </em>in the Goiás<em> </em>State<em></em></strong></p><pre><strong>Abstract: </strong>Teak (<em>Tectona grandis </em>L<em>.</em>) is an Asian plant and it has been cultivated mainly in the North and Midwest of Brazil. However, some diseases can decrease its productivity and growth, such as rust (<em>Olivea neotectonae</em>). This study aimed at reporting <em>O. neotectonae</em> in teak for the first time in the Goiás State. In May 2013, teak leaves were found with necrosis and subsequently fell untimely causing defoliation in plants. As initial analysis, teak leaves were collected from plants located in the area of the Federal Institute Goiano Campus Ceres-GO. Then leaves were taken to the microbiology laboratory of the Department of Agricultural Sciences and analyzed as well as measured under optical microscope for fungal structures. Based on the results of this study, we conclude that the causative fungus necrosis found in plants in the Goiás State is <em>Olivea neotectonae</em>, the causal agent of rust teak.</pre>
O Noni (Morinda citrifolia L.) é uma planta nativa do Sudeste da Ásia que produz frutos com importantes propriedades nutricionais e terapêuticas. Por isso nos últimos anos o cultivo tem se expandido em todo o Brasil. Entretanto com o aumento da área cultivada, a ocorrência de fitopatologias tornou-se mais frequente, o que pode comprometer a produtividade da cultura. Diante disso, objetivou-se relatar a ocorrência de antracnose em plantas de noni no Estado de Goiás. Foram realizados isolamentos a partir de lesões foliares de plantas sintomáticas coletadas nos municípios de Ceres e Goianésia. O teste de patogenicidade dos isolados foi realizado. Para a caracterização morfológica do patógeno, foram confeccionadas lâminas e as estruturas foram observadas em microscopia de luz. Os sintomas iniciais nas folhas inoculadas eram pequenas manchas circulares de coloração marrom-clara, circulares e irregulares que gradualmente aumentaram, tornando-se escuras e com pontuações alaranjadas. As colônias fúngicas apresentaram rápido crescimento e esporulação intensa, coloração acinzentada com margens brancas. Micélio hialino septado e ramificado. Conidióforos simples, alongados. Os conídios hialinos, unicelulares, retos, cilíndricos ou elípticos. Com base nas características morfológicas pode-se concluir que o fungo do gênero Colletotrichum é o agente causal da antracnose no noni no Estado de Goiás.
Tropical and subtropical fruit production plays an important role in the country’s economic scenario and has been affected by root-knot nematode. The jaboticaba tree is a plant widely cultivated in Brazil, and among the problems of the crop is the root-knot nematode of the genus Meloidogyne. This study aimed to evaluate the hostability of jaboticaba tree cv. ‘Sabará’, in different inoculum concentrations of Meloidogyne incognita and Meloidogyne javanica. The inoculum used in the experiment was obtained from the roots of tomato cv. ‘Santa Cruz’. Jaboticaba trees were subjected to inoculation with concentrations of 0, 2000, 4000, and 8000 eggs + juvenile plant-1, for both species of nematodes. The plants of jaboticaba cv. ‘Sabará’ showed resistance concerning the development of M. incognita and M. javanica root-knot nematode with Reproduction Factor (RF) <1.
The objective was to study different groups of bacteria that can adapt to extreme conditions of temperature, pH and salinity, as well as to identify bacterial strains from cultivated (CS) and noncultivated (US) soil samples collected in the city of Brazlândia, Brazil. 38 strains were collected and submitted to growth tests at 45, 55, 65 and 75ºC, pH of 3, 4, 5, 9, 10 and 11 and salinity of 5, 10 and 15% of NaCl. Eleven strains were selected based on their biochemical characterization and identified based on their 16S rDNA sequences. Four groups of bacteria in the CS and US samples were identified and able to grow under the most extreme conditions. Eleven bacterial strains were
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