Reação e resistência de porta-enxertos de tomateiro à murcha de fusário

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Efeito do fosfito de potássio isolado e em mistura com fungicidas no controle da requeima do tomateiro

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Composição química e atividade antioxidante da polpa e resíduos de abacate 'Hass'

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Reação de genótipos e híbridos de tomateiro à Meloidogyne enterolobii

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Biofertilizantes: nutrição e desenvolvimento de tomate orgânico

Pós-graduação em Agronomia (Horticultura) - FCA

Indigenous American species of the Bemisia tabaci complex are still widespread in the Americas

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Evaluation of the chemical composition and colour in long-life tomatoes (Lycopersicon esculentum Mill) dehydrated by combined drying methods

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Caracterização molecular do gene que codifica a TCTP (Translationally Controlled Tumor Protein) em tomate (Solanum lycopersicum cv. Santa Clara)

The gene encoding TCTP (Translationally Controlled Tumour Protein) is present in all eukaryotes and its product is involved in various cellular processes. Although well characterized in mammals, there are only few works available in the literature related to the analysis of this protein in plants. In this present work, the expression of the gene encoding TCTP was analyzed in different organs/tissues of tomato plants (Solanum lycopersicum cv. Santa Clara). A quantification performed by RT-qPCR revealed the presence of TCTP transcript in all tissues/organs analyzed, with the highest expression level found in leaves. With the exception of fruits in intermediate stage of maturation, for which a small increase on the expression was detected, there was minimal variation in the relative expression of TCTP in other organ/tissues. In parallel, the effects of the constitutive expression of TCTP were investigated using transgenic tobacco lines able to overexpress this protein at different levels (T1, T2 and T3). Seedlings of these lines, and of a non-transgenic control line, were grown in MS culture medium for 21 days. At the end of this period, the length of roots and leaves was taken and the seedlings were photographed. According to Tukey's test, the analysis of the mean root length revealed a significant difference between T1 and T3 lines when compared to the control, although the same was not observed for the T2 line. For leaves, according to Kruskal-Wallis test, there was a statistical difference between the averages of leaf growth obtained for the different lines evaluated. According to these results, we can conclude that TCTP shows an ubiquitous expression in tomato plants, with the highest expression detected in leaves, and also that its overexpression promoted a higher root and leaf development in two of three transgenic tobacco lines tested

Caracterização fitoquímica e ensaios biológicos de Coleus blumei Benth

Coleus blumei Benth (Lamiaceae), popularly known in Brazil as heart-hurt or coleus-of-Java is an ornamental plant widely used due to the color of its leaves. Several species of the genus Coleus present compounds with antioxidant, antimicrobial and allopathic activities due to the presence of chemicals such coleonol, forskolin and rosmarinic acid. Therefore, this study aimed to carry out phytochemical study and biological tests to evaluate the antibacterial, antioxidant and allopathic activities of the 70% ethanol extract and its fractions ethyl acetate, dichloromethane and end aqueous fraction leaf of Coleus blumei Benth. The plant extract was prepared by turbolisis from the powder of dried leaves, as a solvent for extraction using 70% ethanol. The ethanol extract was fractionated with solvents dichloromethane and ethyl acetate. The phytochemical study identified the presence of saponins, free anthraquinones, flavonoids and anthocyanidins. In evaluating the antibacterial dichloromethane fraction showed activity against all microorganisms tested both in agar diffusion test and microdilution test. The 70% ethanol extract showed activity against the micro-organisms S. aureus and S. epidermidis in agar diffusion test and against all microorganisms tested in microdilution test. The ethyl acetate fraction showed activity against the micro-organism S. aureus in the agar diffusion test and against all microorganisms tested in microdilution test. The end aqueous fraction showed no activity against any micro-organism tested. In the test of evaluation activity allopathic dichloromethane fraction showed greater inhibition of seed germination and growth of tomato (Lycopersicon esculentum Mill), followed by 70% ethanolic extract, the ethyl acetate fraction and the end aqueous fraction. In testing the antioxidant activity with DPPH ethyl acetate fraction showed higher antioxidant activity followed... (Complete abstract click electronic access below)

Expressão, purificação e caracterização estrutural de proteínas codificadas por dois fitovírus

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Bioactive compounds of the lipid fractions of agro-industrial waste

This study aimed at evaluating the oils extracted from seeds originating from agro-industrial waste, in order to identify the presence of bioactive compounds. Therefore, determinations of fatty acid profile, triacylglycerols, tocopherol composition, phytosterols, phenolic compounds, total carotenoids, and antioxidant capacity were performed in the oils of grape, guava, melon, passion fruit, pumpkin, soursop, and tomato seeds. Antioxidant capacity analysis was performed by the methods DPPH• , ABTS•+, FRAP, and β-carotene/linoleic acid, besides measure of oxidative stability in the oils. The oils showed to be predominantly unsaturated with high percentage of linoleic essential fatty acid (38.8 to 79.4%), besides presenting significant quantities of tocopherols, phytosterols, and phenolic compounds. Tomato and guava oils showed better results in the antioxidant capacity tests and pumpkin oil had higher induction period in the oxidative stability test (65.3 h). The results obtained in this study collect information that enables the use of new alternative sources of vegetable oils, obtained from agroindustrial waste, which may serve as raw material for food, chemical, and pharmaceutical industries.

Identificação, caracterização e avaliação da patogenicidade de diferentes isolados de fusarium spp. para o controle de thaumastocoris peregrinus (hemiptera: thaumastocoridae)

Pós-graduação em Agronomia (Proteção de Plantas) - FCA

Receptor tipo quinase de tomate: caracterização molecular e implicações nas infecções virais

Pós-graduação em Ciências Biológicas (Genética) - IBB

Simultaneous determination of chromium and nickel in medicinal plants by slurry sampling graphite furnace atomic absorption spectrometry

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Reutilização do substrato e concentração da solução nutritiva no cultivo do tomateiro do grupo salada

Pós-graduação em Agronomia (Produção Vegetal) - FCAV