Redox Status and Neuro Inflammation Indexes in Cerebellum and Motor Cortex of Wistar Rats Supplemented with Natural Sources of Omega-3 Fatty Acids and Astaxanthin: Fish Oil,Krill Oil,and Algal Biomass     

Tatiana G. Polotow  Sandra C. Poppe  Cristina V. Vardaris  Douglas Ganini  Maísa Guariroba  Rita Mattei  Elaine Hatanaka  Maria F. Martins  Eduardo F. Bondan  Marcelo P. Barros 《Marine drugs》2015,13(10):6117-6137

Health authorities worldwide have consistently recommended the regular consumption of marine fishes and seafood to preserve memory, sustain cognitive functions, and prevent neurodegenerative processes in humans. Shrimp, crabs, lobster, and salmon are of particular interest in the human diet due to their substantial provision of omega-3 fatty acids (n-3/PUFAs) and the antioxidant carotenoid astaxanthin (ASTA). However, the optimal ratio between these nutraceuticals in natural sources is apparently the key factor for maximum protection against most neuro-motor disorders. Therefore, we aimed here to investigate the effects of a long-term supplementation with (n-3)/PUFAs-rich fish oil, ASTA-rich algal biomass, the combination of them, or krill oil (a natural combination of both nutrients) on baseline redox balance and neuro-inflammation indexes in cerebellum and motor cortex of Wistar rats. Significant changes in redox metabolism were only observed upon ASTA supplementation, which reinforce its antioxidant properties with a putative mitochondrial-centered action in rat brain. Krill oil imposed mild astrocyte activation in motor cortex of Wistar rats, although no redox or inflammatory index was concomitantly altered. In summary, there is no experimental evidence that krill oil, fish oil, oralgal biomass (minor variation), drastically change the baseline oxidative conditions or the neuro-inflammatory scenario in neuromotor-associated rat brain regions.  相似文献   

Genetic transformation of sweet passion fruit (Passiflora alata) and reactions of the transgenic plants to Cowpea aphid borne mosaic virus     

Marcelo Favareto Correa  Ana Paula Chiaverini Pinto  Jorge Alberto Marques Rezende  Ricardo Harakava  Beatriz Madalena Januzzi Mendes 《European journal of plant pathology / European Foundation for Plant Pathology》2015,143(4):813-821

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Genetic progress during 22 years of black bean improvement     

Luis Cláudio de Faria  Patrícia Guimarães Santos Melo  Helton Santos Pereira  Adriane Wendland  Simone Ferreira Borges  Israel Alexandre Pereira Filho  José Luiz Cabrera Diaz  Marcelo Calgaro  Leonardo Cunha Melo 《Euphytica》2014,199(3):261-272

The common bean breeding program coordinated by Embrapa Arroz e Feijão released 50 new cultivars from 1984 to 2010. The aim of the present study was to estimate genetic progress in terms of seed yield and other agronomic traits achieved by the black-type common bean breeding program in Brazil over the 22-year period from 1985 to 2006. Two types of field experiments were performed to assess genetic progress. In regard to experiments on lines, the three best breeding lines from each of 11 evaluation cycles constituted 33 treatments. These evaluations were made in 20 environments and served to estimate progress in seed yield and seed size because these were the criteria applied in selecting the elite lines. Cultivar evaluations included nine cultivars recommended by Embrapa during the period under investigation, and the evaluations were established in 21 environments. These evaluations served to estimate improvements in reaction to angular leaf spot, plant architecture and tolerance to lodging because cultivars usually exhibit superior phenotypes for such characteristics. Evaluations were performed from 2008 to 2010. Estimated improvement in seed yield was 25.2 kg ha^?1 or 1.1 % per year. Improvements were also found in tolerance to lodging (1.7 % per year) and 100-seed weight (0.65 % per year). There was no significant progress for the plant architecture and resistance to angular leaf spot traits.  相似文献   

Genome-Wide Analyses of Subtilisin-Like Serine Proteases on <Emphasis Type="Italic">Solanum tuberosum</Emphasis>     

Natalia Sigrid Norero  Martin Alfredo Castellote  Laura de la Canal  Sergio Enrique Feingold 《American Journal of Potato Research》2016,93(5):485-496

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Horn fly larval survival in cattle dung is reduced by endophyte infection of tall fescue pasture          下载免费PDF全文

Leonardo Parra  Ana Mutis  Manuel Chacón  Marcelo Lizama  Claudio Rojas  Adrián Catrileo  Olga Rubilar  Gonzalo Tortella  Michael A Birkett  Andrés Quiroz 《Pest management science》2016,72(7):1328-1334

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Confirmation and mechanism of glyphosate resistance in tall windmill grass (Chloris elata) from Brazil          下载免费PDF全文

Caio ACG Brunharo  Eric L Patterson  Daniela R Carrijo  Marcel SC de Melo  Marcelo Nicolai  Todd A Gaines  Scott J Nissen  Pedro J Christoffoleti 《Pest management science》2016,72(9):1758-1764

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Economic evaluation of the commercial production between Brazilian samphire and whiteleg shrimp in an aquaponics system     

Leonardo Castilho-Barros  Fábio H. Almeida  Marcelo B. Henriques  Walter Q. Seiffert 《Aquaculture International》2018,26(5):1187-1206

The implementation of aquaponics systems has significantly increased in the last two decades, and several studies have reported on the technical, socioeconomic, and environmental ramifications in order to achieve sustainability in food production. The present study, however, aimed to perform a commercial-scale economic evaluation, using a model marine aquaponics production system with the halophyte Sarcocornia ambigua and the shrimp Litopenaeus vannamei cultivated in nutrient film technology (NFT) and biofloc technology (BFT) systems, respectively. To calculate phytotechnical and zootechnical indexes, we used recent studies available in the literature. Indicators of operational costs (total cost of production—TCP) and financial viability were calculated based on a cash flow horizon of 10 years. The proposed study estimated an initial investment of US$ 474,253.07, with annual TCPs around US$ 192,220.50, US$ 247,740.52, and US$ 223,482.65 years 1, 2 to 9, and 10, the different periods studied. Within these respective periods, the annual production of halophyte was 17,017, 23,286, and 18,808 kg, while marine shrimp production was 10,659, 14,586, and 11,781 kg. Based on these annual production numbers, the TCPs were US$ 4.75, US$ 4.03, and US$ 4.67 kg^?1 for halophyte and US$ 10.45, US$ 14.43, and US$ 11.52 kg^?1 for shrimp. Three sales prices were estimated per kilogram of halophyte produced and one fixed price per kilogram of shrimp produced. Only the highest selling price showed favorable indexes after testing sensitivities. Based on the above parameters, halophyte TCP was below sales value, i.e., reference price, with the possibility of increasing the price to “premium” level, indicating that this marine aquaponics production system was feasible for implementation in Brazil.  相似文献   

Genetic Diversity in Argentine Andean Potatoes by Means of Functional Markers     

Marcelo Nicolás Monte  María Florencia Rey Burusco  Martín Federico Carboni  Martín Alfredo Castellote  Sofía Sucar  Natalia Sigrid Norero  Silvana Lorena Colman  Gabriela Alejandra Massa  Mónica Liliana Colavita  Sergio Enrique Feingold 《American Journal of Potato Research》2018,95(3):286-300

Andean Potato is a major crop for farmers in the Andes and represents an important gene pool for potato improvement. We present the population structure and genetic diversity of 88 Andigena accessions collected in Northwestern Argentina based on functional markers (25 SSR) distributed along 12 chromosomes. Polymorphic information content ranged from 0.40 to 0.87. A Bayesian approach, a Principal Coordinate Analysis and a Cluster Analysis revealed the presence of: I) a major group containing most of the Andean accessions and II) a smaller group including the out-group cv. Spunta and the sequenced genotype DM. Several group specific alleles were detected. AMOVA showed that 81% of the variability was within each group. Eleven of the SSRs analyzed are linked or within genes reported to regulate traits of nutritional and industrial interest. Additionally, the allelic variant of a photoperiod dependent tuberization regulator gene, StCDF1.2, was exclusively detected in accessions clustered in group II.  相似文献   

Oxidative stress and antioxidant responses in juvenile Brazilian flounder <Emphasis Type="Italic">Paralichthys orbignyanus</Emphasis> exposed to sublethal levels of nitrite     

Lucas Campos Maltez  Luis André Luz Barbas  Lilian Fiori Nitz  Lucas Pellegrin  Marcelo Hideo Okamoto  Luís André Sampaio  José Maria Monserrat  Luciano Garcia 《Fish physiology and biochemistry》2018,44(5):1349-1362

This study evaluated the effects of short-term exposure to sublethal levels of nitrite on oxidative stress parameters and histology of juvenile Brazilian flounder Paralichthys orbignyanus. An assessment of fish recovery was also performed. Fish were exposed to 0.08 (control), 5.72, 10.43, and 15.27 NO₂-N mg L^?1 for 10 days followed by the same recovery time. Gill, liver, and muscle samples were collected after 1, 5, and 10 days of exposure and after recovery for the measurement of antioxidant capacity against peroxyl radicals (ACAP), glutathione-S-transferase (GST) activity, content of non-protein (NPSH) and protein thiols (PSH), and lipid peroxidation levels by thiobarbituric acid-reactive substances (TBARS) content. Nitrite exposure induced alterations which compromised the overall antioxidant system (reduced ACAP and GST activity) and enhanced oxidative damage in lipids and proteins. Increases in GST activity and NPSH and PSH contents were also demonstrated. The recovery period allowed for resumption of basal levels for all (treatment 5.72 NO₂-N mg L^?1) or some of the evaluated parameters (other treatments). In conclusion, exposure to nitrite concentrations from 5.72 to 15.27 NO₂-N mg L^?1 induced oxidative stress and antioxidant responses in juvenile Brazilian flounder. The 10-day recovery period was sufficient for a complete resumption of basal physiological condition of fish exposed to concentrations of up to 5.72 NO₂-N mg L^?1.  相似文献   

Humic Substances on Soybeans Grown Under Water Stress     

Marcelo Ribeiro Vilela Prado  Oscarlina Lúcia dos Santos Weber  Milton Ferreira de Moraes  Carlos Leandro Rodrigues dos Santos  Morgana Santos Tunes  Fabricio Tomaz Ramos 《Communications in Soil Science and Plant Analysis》2016,47(21):2405-2413

Hypothetically, humic substances (HSs) can improve the response of plants in sandy soils. The objective was to assess the effect of applying an organomineral fertilizer enriched with HSs on soybean plants grown with and without water stress. The experimental design was entirely randomized, in a greenhouse, in a 2 × 5 factorial setup (two moisture levels and five fertilizer doses: 0, 1, 2, 4, and 8 mL dm^?3), for a total of 10 treatments, with eight repetitions, using as substrate a Psamment. The organomineral fertilizer was applied in the soil 21 days after plant emergence, and the water regimes were established 1 week thereafter. Plant height, shoot and root dry mass, mineral nutrition, and grain yield were evaluated. There was a positive response to the doses, with the most efficient one under water stress being 6.5 mL dm^?3 and HSs favored the uptake of micronutrients.  相似文献