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Root proliferation in native perennial grasses of arid Patagonia,Argentina

Journal of Arid Land 2014年第2期6卷 195-204页

作者： Yanina A TORRES Carlos A BUSSO Oscar A MONTENEGRO Leticia ITHURRART Hugo D GIORGETT Gustavo RODRíGUEZ Diego BENTIVEGNA Roberto E BREVEDAN Osvaldo A FERNáNDEZ María M MUJICA Sandra S BAIONI José ENTíO María N FIORETTI Guillermo TUCAT Agronomy Department National University of the South and CERZOS (CONICET) Experimental Farm EEA INTA Patagones Ministery of Agrarian Issues Faculty of agrarian Sciences National University of La Plata

Pappophorum vaginatum is the most abundant C4 perennial grass desirable to livestock in rangelands of northeastern Patagonia, Argentina. We hypothesized that （1） defoliation reduce net primary productivity, and root length density and weight in the native species, and （2） root net primary productivity, and root length density and weight, are greater in P. vaginatum than in the other, less desirable, native species （i.e., Aristida spegazzinfi, A. subulata and Sporobolus cryptandrus）. Plants of all species were either exposed or not to a severe defoliation twice a year during two growing seasons. Root proliferation was measured using the cylinder method. Cylindrical, iron structures, wrapped up using nylon mesh, were buried diagonally from the periphery to the center on individual plants. These structures, initially filled with soil without any organic residue, were dug up from the soil on 25 April 2008, after two successive defoliations in mid-spring 2007. During the second growing season （2008-2009）, cylinders were destructively harvested on 4 April 2009, after one or two defoliations in mid- and/or late-spring, respectively. Roots grown into the cylinders were obtained after washing the soil manually. Defoliation during two successive years did reduce the study variables only after plants of all species were defoliated twice, which supported the first hypothesis. The greater root net primary productivity, root length den- sity and weight in P. vaginatum than in the other native species, in support of the second hypothesis, could help to explain its greater abundance in rangelands of Argentina.

关键词： Aristida species competitive ability Pappophorum vaginatum Sporobolus cryptandrus warm-season perennial grasses

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Oxidative stability of green weakfish(Cynoscion virescens)by-product surimi and surimi gel enhanced with a Spondias mombin *** phenolic-rich extract during cold storage

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Food Bioscience 2022年第6期50卷 1260-1267页

作者： Thamyres César de Albuquerque Sousa Edson Luís Lima Silva Valquiria Cardoso da Silva Ferreira Marta Suely Madruga Fábio Anderson Pereira da Silva Postgraduate Program in Agrifood Technology Center for HumanSocial and Agrarian SciencesFederal University of ParaíbaBananeirasParaíba58220-000Brazil center for Human Social and Agrarian SciencesFederal University of ParaíbaBananeirasParaíba58220-000Brazil Postgraduate Program in Food Science and Technology Technology CenterFederal University of ParaíbaJardim Cidade UniversitáriaJoão PessoaParaíba58900-000Brazil

The aim of this investigation was to assess the effect of yellow mombin bagasse extract(YMBE),alone or combined with commercial cryoprotectants,on the quality changes during cold storage of surimi and surimi gel prepared with the cutting by-product of green weakfish(Cynoscion virescens).Four treatments were elaborated:SC(surimi control),SE(surimi with addition of 1%extract),SCP(surimi with the addition of 4%sorbitol+4%sucrose)and SECP(surimi with addition of 1%extract+4%sorbitol+4%sucrose).The addition of the extract was effective in maintaining the whiteness of the surimi and its gel throughout *** the end of 12 days of cold storage,the surimi gel prepared with SE treatment presented high whiteness compared to the control *** inclusion of 1%YMBE in isolation or combined with commercial cryoprotectants showed a positive effect on the inhibition of lipid and protein oxidation of *** conclusion,YMBE extract is a promising alternative to be used as a natural food preservative in surimi and surimi gel.

关键词： Natural antioxidant Cryoprotectants Gelification Oxidation Surimi

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Impact of rainfed and irrigated agriculture systems on soil carbon stock under different climate scenarios in the semi-arid region of Brazil

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Journal of Arid Land 2022年第4期14卷 359-373页

作者： André L CARVALHO Renato A ARAúJO-NETO Guilherme B LYRA Carlos E P CERRI Stoécio M F MAIA center for agrarian Sciences Federal University of AlagoasRio Largo 57072-900Brazil Luiz de Queiroz College of Agriculture The University of Sao PauloPiracicaba 13418-900Brazil Federal Institute of Alagoas Marechal Deodoro 57160-000Brazil

Understanding the dynamics of soil organic carbon(SOC) is of fundamental importance in land use and management, whether in the current researches or in future scenarios of agriculture systems considering climate change. In order to evaluate SOC stock of the three districts(Delmiro Gouveia, Pariconha, and Inhapi districts) in the semi-arid region of Brazil in rainfed and irrigated agriculture systems under different climate scenarios using the Century model, we obtained RCP4.5 and RCP8.5 climate scenarios derived from the Eta Regional Climate Model(Eta-Had GEM2-ES and Eta-MIROC5) from the National Institute for Space Research, and then input the data of bulk density, p H, soil texture, maximum temperature, minimum temperature, and rainfall into the soil and climate files of the Century model. The results of this study showed that the Eta-Had GEM2-ES model was effective in estimating air temperature in the future period. In rainfed agriculture system, SOC stock under the baseline scenario was lower than that under RCP4.5 and RCP8.5 climate scenarios, while in irrigated agriculture system, SOC stock in the almost all climate scenarios(RCP4.5 and RCP8.5) and models(Eta-Had GEM2-ES and Eta-MIROC5) will increase by 2100. The results of this study will help producers in the semi-arid region of Brazil adopt specific agriculture systems aimed at mitigating greenhouse gas emissions.

关键词： soil carbon stock agriculture systems climate scenarios Century model semi-arid region

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Microbiological Quality, Transmission of Resistant Bacteria, and Genetic Characterization in Fish Sold in Town Fairs in the Recôncavo da Bahia Region, Brazil

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Food and Nutrition Sciences 2019年第9期10卷 1072-1084页

作者： Sanmily Santos Damacena Ludmilla Santana Soares e Barros center of Environmental and Biological agrarian Sciences UFRB Cruz das Almas Brazil

Informal fish marketing is an important source of food and income for many families. However, it is also a public health issue, since the quality of fish can be compromised during marketing. The microbiological quality of fish sold in town fairs in the municipalities of the Bahia Reconcavo region, Brazil, was assessed to characterize isolates based on antimicrobial susceptibility and to investigate gene virulence. Samples of mullets (Mugil sp.), mussels (Mytella sp.), and mollusks (Anomalocardia brasiliana) were collected in town fairs in the municipalities of Cachoeira, Cruz das Almas, and Santo Ant ?nio de Jesus. The presence of mesophylls, molds and yeasts, total coliforms, Escherichia coli, and Staphylococcus aureus was evaluated. E. coli and S. aureus isolates were subjected to antimicrobial susceptibility tests and the presence of the gene stx in E. coli isolates was investigated. Total coliforms and S. aureus ranged between 0 and 9.50 log CFU/g, while high counts of mesophylls, molds, and yeasts were detected. E. coli had greater resistance (76.8%) to amoxicillin and S. aureus had greater sensitivity to gentamicin. The stx gene was not identified in any of the samples studied. Results showed that some fish sold in the town fairs of the three municipalities possessed unsatisfactory microbiological quality, which may pose risks to consumer health, and may be vectors for the dissemination of bacteria resistant to different antimicrobial agents.

关键词： Mugil brasiliensis Mytella spp. Anomalocardia brasiliana Resistance Virulence

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Food Safety and Fish Farming: Serious Issues for Brazil

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Food and Nutrition Sciences 2020年第2期11卷 123-152页

作者： Ludmilla Santana Soares e Barros center of Environmental and Biological agrarian Sciences UFRB Cruz das Almas Brazil

Fish farming in Brazil has been growing, and a new branch that has been taking up space and evolving, every year, as a source of leisure, is fish-pay. Despite being a leisure practice, this type of fish farming has contributed to the development of Brazilian aquaculture. With the growth of aquaculture in the country, concerns about the quality of the product arise, both financially and microbiologically. Aquaculture has caused some environmental problems, such as the increase in the population growth of bacteria specific to the aquatic environment and the possible proliferation of microorganisms resistant to antibiotics due to the indiscriminate use of these drugs in nurseries. Inadequate water quality conditions can contaminate fish and favor the development of diarrheal infections due to the microbiological load present in the fish. This article aims to review the literature covering the general characteristics of fish, including aspects of nutritional importance, and mechanisms of deterioration and analysis of freshness.

关键词： Characteristics Deterioration Nutritional Importance

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Impacts of Residual Phosphorus on the Production of Cowpea in the Cerrado Region

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American Journal of Plant Sciences 2018年第4期9卷 645-658页

作者： Jair da Costa Gaspar Marileia Barros Furtado Welder José dos Santos Silva Isaías dos Santos Reis Nítalo André Farias Machado Maryzélia Furtado de Farias Jomar Livramento Barros Furtado Hosana Aguiar Freitas de Andrade Raquel da Silva Sobral Luisa Julieth Parra-Serrano Khalil de Menezes Rodrigues Raissa Rachel Salustriano Silva-Matos center of agrarian Sciences and Environmental Federal University of Maranhao Chapadinha Brazil center of agrarian Sciences Federal University of Piauí Teresina Brazil Faculty of agrarian and Veterinary Sciences State University Paulista Júlio de Mesquita Filho UNESP Sao Paulo Brazil Exact and Technological Science center State University of Western Paraná Cascavel Brazil

Phosphate fertilizers when applied to the soil, besides being harvested by the crops, promote a residual effect that can be offered to subsequent crops. The objective of this research was to evaluate the residual effect of phosphate fertilization applied to maize cultivation on the successor crop, cowpea, in the Cerrado region in Maranhao. The research was carried out in the experimental area of Federal University of Maranhao (UFMA), located in the city of Chapadinha, MA (3°44'30"S, 43°21'37''W). The experimental design was in randomized blocks, with six treatments and four replications. The treatments were composed of the following residual P doses: 0, 60, 70, 80, 90, 100 kg·ha-1 of P2O5. The cultivation of cowpea (cultivar BRS guariba) was sown at a spacing of 1.0 × 0.20 m. The cowpea proved to be efficient in the use of residual phosphate fertilization, since it promoted grain yield close to the national average. The cultivation of cowpea in previously cultivated areas is feasible, in order to take advantage of the residual phosphate fertilization in the Cerrado of East of Maranhao. The phosphorus dose applied in the predecessor crop corresponding to 80 kg·ha-1 of P2O5 promoted higher grain yield (393.44 Mg·ha-1) and a greater profit margin (US $326.26). Thus, it is feasible to grow cowpea in previously cultivated areas, in order to take advantage of residual phosphate fertilization.

关键词： Fertilizing Vigna unguiculata L. Walp Phosphate Fertilization Residue

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Development of Baccharis dracunculifolia(Asteraceae)Essential Oil Nanoemulsion and Its Biological Activity on Pre-pupae of Cochliomyia hominivorax(Diptera:Calliphoridae)

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Journal of Pharmacy and Pharmacology 2019年第6期7卷 293-308页

作者： Jaqueline Seugling Shirley Kuhnen Giuliano Pereira de Barros Maria Beatriz Velerinho Letícia Mazzarino Patrizia Ana Bricarello Animal Parasitology Laboratory Agrarian Sciences CenterFederal University of Santa CatarinaFlorianópolis 88034-001Brazil Biochemical and Animal Morphophysiology Laboratory Agrarian Sciences CenterFederal University of Santa CatarinaFlorianópolis 88034-001Brazil NanobioMat Agrarian Sciences CenterFederal University of Santa CatarinaFlorianópolis 88034-001Brazil

Myiasis is considered a serious medical condition in animals and humans that occurs predominantly in tropical *** hominivorax is one of the main fly species that causes myiasis and the actual geographic distribution includes the Caribbean and all of South America,except *** use of synthetic insecticides and endectocides in livestock for the myiasis treatment has resulted in insect resistance,while also causing residuals in the environment and contamination of animal food *** active compounds are considered an alternative for the sustainable management of insects,as they are biodegradable and less damaging to the *** study developed a nanoemulsion containing the essential oil of Baccharis dracunculifolia and evaluated its in vitro effects on *** *** pressure homogenization was used to develop the *** tests were carried out with the tested products using 15 larvae/repetition,for a total of 150 larvae per *** different concentrations of the nanoemulsion were tested shortly after preparation and after 120 days of *** the fresh formulation,at concentrations of 5,7.5,10,13.5,and 15%(w/v)we found mortality of 28,48,70,84,and 97%,respectively,while for the stored formulation,we found mortality of 17,36,51,81,and 92%.The larvicidal effect was similar,except for the concentrations of 5 and 10%(w/v)(p<0.05).Our results show that the natural based *** nanoemulsion can be considered a promising alternative for the treatment and control of myiasis caused by ***.

关键词： Natural products insecta phytotherapy larvicidal activity myiasis

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Dynamics of annual growth of Pinus sylvestris on industrial wastes of mining companies

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Journal of Forestry Research 2021年第4期32卷 1385-1393页

作者： Svetlana Bakhtina Yulai Yanbaev Aleksey Kulagin Nina Redkina Ilgam Masalimov Shamil Fayzrakhmanov Scientific and Educational center Federal State Budgetary Educational Institution of Higher EducationBashkir State Agrarian University50-Letia Octyabrya Str.34UfaRussia 450001 Department of Forestry and Landscape Design Federal State Budgetary Educational Establishment of Higher EducationBashkir State Agrarian University50-Letia Octyabrya Str.34UfaRussia 450001 Laboratory of Forestry Ufa Institute of BiologyUfa Research Center of Russian Academy of SciencesProspect Octyabrya69UfaRussia 450054 Department of Ecology and Life Safety Federal State Budgetary Educational Institution of Higher EducationBashkir State UniversityZaki Validi Str.32UfaRussia 450076 Department of Mechanics and Engineering Graphics Federal State Budgetary Educational Establishment of Higher EducationBashkir State Agrarian University50-Letia Octyabrya Str.34UfaRussia 450001 Department of Mechanics and Machine Design Federal State Budgetary Educational Establishment of Higher EducationBashkir State Agrarian University50-Letia Octyabrya Str.34UfaRussia 450001

The development of the mining industry has led to the appearance in many parts of the world of vast technogenic territories from which toxic heavy metals enter the environment and food ***,chemical,and biological methods of cleaning industrial land due to technological complexity and hi gh cost are relatively little used on a large *** forest overgrowth of mining sites and the removal of heavy metals by woody plants can be an effective form of ***,the study of this process is of significant scientific and practical *** analysis of the annual growth in height and width of the annual rings of the stem of Scots pine(Pinus sylvestris L.) in 2004-2019 was made on the territory of the Uchalinsky mining and processing plant(South Ural,Russia) contaminated with heavy *** hi gh concentrations of copper and zinc were found in soils,roots,bark,young shoots,comparable to exceeding the maximum allowable *** the spatial uniformity of the heavy metal content in the stands,the tree samples significantly differed in terms of annual *** suggest that the lack of nutrients and not stress from exposure to heavy metals is the main reason for relatively low growth rates on slopes of industrial *** was confirmed by studying the annual growth in height of the undergrowth in habitats with different soil cover *** data prove the relatively high potential of Scots pine for the natural recovery of industrial lands polluted with heavy metals by mining enterprises.

关键词： Annual growth Pinus sylvestris Heavy metals Phytoremediation

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Phytosociology and Floristic Composition of the Infesting Community in Rice Crop Waterlogged

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American Journal of Plant Sciences 2018年第3期9卷 353-367页

作者： Bruna Penha Costa Maria Rosangela Malheiros Silva Carlos Augusto Rocha de Moraes Rego Juan López de Herrera Maria Soraia Fortado Vera Cruz Ana Carolina Pinguelli Ristau Marinez Carpiski Sampaio Thatiane Nepomuceno Alves Shirlene Souza Oliveira Hannah Braz Nitalo Andre Farias Machado center of agrarian Sciences State University of Western Paraná Marechal Candido Rondon Brazil center of agrarian Sciences State University of Maranh&atilde o S&atilde o Luís Brazil University School of Agricultural Technical Engineering Polytechnic University of Madrid Madrid Spain

The objective of this study is to identify and quantify the floristic composition of the weed community in the rice crop waterlogged in the municipality of Arari-MA. The botanical material was obtained in three areas by randomly a hollow rectangle of 0.50 m × 0.30 m by forty five times in each plot. The aerial parts of weeds were harvested, identified, counted and oven dried with forced air ventilation at 333.15 K to 343.15 K. These data were used to determine the phytosociological parameters and the Shannon-Wiener diversity index was also calculated. A total of 6607 plants were collected, being 4115 (62.28%) in the vegetative phase and 2492 (37.72%) in the reproductive phase. The monocotyledonous group obtained the largest number of plants, 2882 in the vegetative phase and 1535 in the reproductive phase. The Cyperaceae family recorded nine species and four genera and the Poaceae, seven and four species in the vegetative and reproductive phases, respectively. The species of higher IVI in the vegetative phase was E. sellowiana in the area A1 with 82.86%, and in the reproductive F. dichotoma with IVI of 90.49% in the area A3. The individuals density and species richness were higher in the vegetative phase of the culture and the monocotyledonous group predominated with the Cyperaceae and Poaceae families, and the weed diversity among the areas was low.

关键词： Diversity Oryza sativa L. Weeds

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Determination of Fatty-Acid Composition in Oils of Animal Origin by Near-Infrared Spectroscopy

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Food and Nutrition Sciences 2014年第14期5卷 1408-1414页

作者： Diyas Myrzakozha Darkhan Turgaliev Hide Sato Kazakhstan-Japan Innovation center Kazakh National Agrarian University Almaty Kazakhstan Kwansei Gakuin University Sanda Japan

The authentication of milk requires the use of sophisticated and expensive analytical techniques. There is a huge need for reliable and cheap analytical technologies for use as fast and effective screening methods. This paper proposes the use of myristic acid in the authentication of cow, mare, camel and goat milk, using near infrared spectrometry. Comparison has been made with traditional gas chromatography methods, so that both methods can be used in the authentication of different types of dairy products.

关键词： Authentication Near Infrared Spectrometry Cow Camel Mare Goat Milk

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