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Axions, the hypothetical particles restoring the charge-parity symmetry in the strong sector of the Standard Model, and one of the most prone candidates for dark matter, are well-known to interact with plasmas. In a recent publication [Phys. Rev. Lett. {\bf 120}, 181803 (2018)], we have shown that if the plasma dynamically responds to the presence of axions, then a new quasi-particle (the axion plasmon-polariton) can be formed, being at the basis of a new generation of plasma-based detection techniques. In this work, we exploit the axion-plasmon hybridization to actively produce axions in streaming magnetized plasmas. We show that, if we make the plasma unstable via the injection of an energetic electron beam (beam-plasma instability), an appreciable production rate of few axions per minute can be achieved. The produced axions can then be detected by Primakoff decay into photons., Axions, axion-plasmon polaritons, beam-plasma instability, axion production in plasmas, neutron stars, pulsars

O trabalho tem por objetivo avaliar e selecionar, preliminarmente, progênies de cupuaçuzeiro em condições de restrição hídrica. O experimento foi conduzido em casa de vegetação da Embrapa Amazônia Oriental, Belém-PA, utilizando delineamento experimental inteiramente casualizado, arranjados em esquema fatorial de 16 x 2, com quatro repetições. Os tratamentos foram 16 progênies de cupuaçuzeiro e os dois regimes hídricos (déficit hídrico e controle). Foram analisadas variáveis morfológicas durante 45 dias. O estudo identificou que a restrição hídrica provocou reduções nos materiais avaliados para a maioria das variáveis analisadas. Nessas condições, as melhores tolerâncias ao déficit hídrico para as variáveis analisadas foram obtidas pelas progênies 42, 48, 62, 64 e 1074, pelo fato desses materiais terem apresentado melhor comportamento morfológicos quando submetidos à deficiência hídrica. Portanto, devem ser indicados para cultivo em ambientes com baixa pluviosidade, e aproveitadas em trabalhos de melhoramento genético. Made available in DSpace on 2017-10-27T09:27:02Z (GMT). No. of bitstreams: 1 115049531PB.pdf: 349254 bytes, checksum: b4645fe8e9b12bb349dfe42372af58b5 (MD5) Previous issue date: 2017-10-26 Resumos expandidos do XIII Curso de Inverno de Genética.

Objetivou-se com esse trabalho avaliar os efeitos do alagamento do solo no desenvolvimento de plantas jovens de 16 progênies de cupuaçuzeiro, para selecionar materiais com possíveis mecanismos de tolerância ao alagamento. O experimento foi conduzido em casa de vegetação da Embrapa Amazônia Oriental, Belém-PA, utilizando delineamento experimental inteiramente casualizado, arranjados em esquema fatorial de 16 x 2, com quatro repetições. Os tratamentos foram 16 progênies de cupuaçuzeiro e os dois regimes hídricos (alagado e controle). Foram analisadas variáveis morfológicas durante 45 dias. O estudo identificou que os materiais avaliados foram beneficiados pelo alagamento em todas variáveis analisadas. Nessas condições, os melhores acréscimos médios para as variáveis analisadas foram obtidos pelas progênies 32, 42, 46, 57 e 215, pelo fato desses materiais terem apresentado os maiores valores médios para a maioria dos parâmetros morfológicos avaliados, indicando boa capacidade de sobrevivência em solos alagados ou de transição Made available in DSpace on 2017-10-27T09:26:42Z (GMT). No. of bitstreams: 1 114549471PB.pdf: 399729 bytes, checksum: 2051bb27a5ff7ec360b12253e1347974 (MD5) Previous issue date: 2017-10-26 Resumos expandidos do XIII Curso de Inverno de Genética.

Introduction Diabetes mellitus is associated with cardiovascular disease. Anti-diabetic therapy has a limited capability (if any) of changing the incidence of either death or major cardiovascular disease, and cardiovascular safety concerns have been raised. We aimed at identifying episodes of acute myocardial infarction associated to a relatively new class of drugs, dipeptidyl peptidase-4 inhibitors. Methods Retrospective study: from 954 admissions (15 month period) in the coronary care unit, we selected 200 admissions corresponding to 196 patients with myocardial infarction and diabetes. 35 of these patients were receiving therapy with dipeptidyl peptidase-4 inhibitors (the vast majority, in association to metformin). We evaluated the peak plasma cardiac troponin I as the main study parameter. Results Patients on dipeptidyl peptidase-4 inhibitors therapy had a mean peak cardiac troponin plasma level of 50.2±121.3 ng/ml (n=35), the corresponding value for insulin being 39.2±108.4 ng/ml (n=56), for metformin the value was 45.8±97.3 ng/ml (n=93) and for sulfonylureas, 42.4±77.7 ng/ml (n=52). None of these values differed significantly from the corresponding control group of patients not taking each class of drug. The linear regression study also yielded a negative result relating therapy with dipeptidyl peptidase-4 inhibitors and peak troponin values. Acute myocardial infarctions associated to dipeptidyl peptidase-4 inhibitors varied widely in the clinical characteristics of the patients. Conclusions We found no evidence that peak plasma troponin I was different between patient with acute myocardial infarction and use of dipeptidyl peptidase-4 inhibitors when compared to cases not under such therapy.

A major problem affecting some upland rice cultivars is the increase in plant size when subjected to high doses of nitrogen fertilizer, leading to high levels of lodging. A method to reduce the height of upland rice, and therefore lodging, would be to use plant growth regulators. However, little information exists on the effect of these regulators on plant physiological processes. Therefore, the objective of this study was to evaluate the influence of trinexapac-ethyl application in upland rice via analysis of growth and gas exchange. The experiment was carried out under greenhouse conditions using the BRS Primavera cultivar. A completely randomized design with eight replications was used. Treatments were carried out with and without the application of the plant growth regulator, and plants were subject to two-stage assessments in which physiological and gas-exchange indices were measured. The use of trinexapac-ethyl improved the growth of rice plants from the flowering to the physiological maturity stage, resulting in higher values of leaf area ratio, specific leaf area, and leaf matter ratio in treated plants. At the same time, it provided smaller reduction in net CO2 assimilation at the physiological maturity stage. Thus, net/apparent assimilation rate did not change after the application of growth regulator, but relative growth rate decreased in these treated plants. These results indicate the occurrence of self-shading in rice plants induced by what might be a supra-optimum trinexapac-ethyl concentration.

The objective of this work was to evaluate gas exchange rates, plant height, yield components, and productivity of upland rice, as affected by type and application time of plant growth regulators. A randomized block design, in a 4x2 factorial arrangement, with four replicates was used. Treatments consisted of three growth regulators (mepiquat chloride, trinexapac.ethyl, and paclobutrazol), besides a control treatment applied at two different phenological stages: early tillering or panicle primordial differentiation. The experiment was performed under sprinkler.irrigated field conditions. Net CO2 assimilation, stomatal conductance, plant transpiration, and water.use efficiency were measured four times in Primavera upland rice cultivar, between booting and milky grain phenophases. Gas exchange rates were neither influenced by growth regulators nor by application time. There was, however, interaction between these factors on the other variables. Application of trinexapac.ethyl at both tillering and differentiation stages reduced plant height and negatively affected yield components and rice productivity. However, paclobutrazol and mepiquat chloride applied at tillering, reduced plant height without affecting rice yield. Mepiquat chloride acted as a growth stimulator when applied at the differentiation stage, and significantly increased plant height, panicle number, and grain yield of upland rice.

O objetivo deste trabalho foi avaliar o efeito da desfolha sobre a atividade fotossintética das folhas de videira cv. Itália. Suplemento. Edição dos Resumos do XIII Congresso Brasileiro de Fisiologia Vegetal; XIV Reunião Latino-Americana de Fisiologia Vegetal, Búzios, set. 2011.

O maracujá-do-mato ( Mast.) é uma espécie de ocorrência espontânea no semiárido, sendo uma importante alternativa em programas de melhoramento genético, ou usada como portaenxerto para espécies cultivadas, na solução dos problemas de ordem fitossanitária. Essa espécie vem sendo multiplicada por sementes, contudo, tem apresentado sérios problemas de dormência e segregação genética, o que torna desejável o uso da propagação assexuada. Procurou-se, neste trabalho, avaliar o potencial de enraizamento de estacas medianas de O experimento foi conduzido em câmara de nebulização com luminosidade de 50 %. O delineamento experimental utilizado foi o esquema fatorial 4 x 3 em blocos casualizados, com quatro concentrações de ácido indolibutírico (AIB) e três tipos de substrato, com 12 estacas por parcela e quatro repetições. As concentrações de AIB foram: 0; 500; 1000 e 1500 mg L e os substratos utilizados foram: Plantmax Hortaliças®; fibra de coco natural e a mistura de solo + fibra de coco + húmus de minhoca (proporção de 3:1:1 v/v). Aos 90 dias, foram avaliados em percentagem, as folhas persistentes, estacas vivas, estacas com “calos”, estacas com brotos, estacas enraizadas e comprimento dos brotos e da maior raiz.Omaracujá-do-mato pode ser propagado por estacas sem a utilização doAIBemsubstrato composto da mistura de solo + fibra de coco + húmus de minhoca. Made available in DSpace on 2018-10-18T01:01:17Z (GMT). No. of bitstreams: 1 Pinheiro2010.pdf: 86462 bytes, checksum: 36f87d62e522b07c48f0977ac7f9f188 (MD5) Previous issue date: 2011-04-13

A mangicultura no semiárido brasileiro destacase pelos altos rendimentos, pela qualidade do fruto produzido e pela possibilidade de produção durante todo o ano, devido a condições climáticas e tecnologias para o manejo do crescimento vegetativo e da floração, com uso da irrigação, podas e retardantes vegetais. O paclobutrazol aplicado ao solo é utilizado no manejo da produção da mangueira na maioria dos pomares. Entretanto, há a necessidade de identificar retardantes vegetais que possam ser aplicados via foliar, de forma a minimizar os resíduos no solo e evitar o uso de quantidades inadequadas ao longo dos anos. Assim, este trabalho teve como objetivo avaliar retardantes vegetais aplicados via foliar na inibição do crescimento vegetativo de mudas de mangueira ‘Tommy Atkins’. Prohexadione-Ca, etiltrinexapac e cloreto de chlormequat, aplicados via foliar, na dose de 1g i.a. planta-1, regulam o crescimento de ramos vegetativos, mas apresentam tempo diferenciado de atividade nas mudas, sendo 20 dias para prohexadione-Ca, 30 dias para cloreto de chlormequat e 45 dias para etil-trinexapac, nas condições em que o experimento foi conduzido.

Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:20:31Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:28:28Z : No. of bitstreams: 1 2-s2.0-0036818423.pdf: 606842 bytes, checksum: d0cfc8947538b65ae00cbe7d523cf28d (MD5) Made available in DSpace on 2014-05-27T11:20:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-10-01 The germinative capacity of spores of Fusarium was studied in the presence of copahiba balsam (5 to 100%). The culture was carried out in Erlenmeyer flasks with 50ml of ICI medium and 1 ml of the pre-inoculated fungus. In some specific cases, 1 ml of copahiba balsam was added to the medium. The development of spores was significantly reduced in the presence of copahiba balsam. Sensibility to copahiba balsam varied with the different strains of Fusarium. Nucleo Pesquisa em Produtos Naturais Departamento de Bioquimica Universidade Estadual de Maringa, Av. Colombo no 5790, CEP: 87020-900 - Maringa - PR Departamento de Botanica Univ. Estadual Paulista - UNESP, CEP: 18618-000 - Botucatu - SP Departamento de Botanica Univ. Estadual Paulista - UNESP, CEP: 18618-000 - Botucatu - SP

Objetivou-se padronizar a metodologia do RT-PCR paraidentificar o mRNA do gene de ?-amilase em sementes de milho. Após três dias de germinaçãodas cultivares Saracura-BRS 4154 e CATI-AL34, extraiu-se o RNA total pelo método do tiocianatode guanidina-fenol-clorofórmio, com algumas modificações. A partir do RNA total extraído foiobtido cDNA com utilização de “random primers”. Made available in DSpace on 2011-04-09T20:42:22Z (GMT). No. of bitstreams: 1 OPB2292.pdf: 281503 bytes, checksum: b3abe6a74584a3a11a98f6f8c1912a82 (MD5) Previous issue date: 2009-04-13

Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2014-02-26T17:13:35Z No. of bitstreams: 0 Made available in DSpace on 2014-02-26T17:13:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-01-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:48:17Z No. of bitstreams: 0 Made available in DSpace on 2014-05-20T13:48:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-01-01 The influence of the allelochemicals ferulic (FA) and vanillic (VA) acids on peroxidase (POD, EC 1.11.1.7) and phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) activities and their relationships with phenolic acid (PhAs) contents and root growth of soybean (Glycine max (L.) Merr.) were examined. Three-day-old seedlings were cultivated in nutrient solution containing FA or VA (0.1 to 1 mM) for 48 h. Both compounds (at 0.5 and 1 mM) decreased root length (RL), fresh weight (FW) and dry weight (DW) and increased PhAs contents. At 0.5 and 1 mM, FA increased soluble POD activity (18% and 47%, respectively) and cell wall (CW)-bound POD activity (61% and 34%), while VA increased soluble POD activity (33% and 17%) but did not affect CW-bound POD activity. At I mM, FA increased (82%) while VA reduced (32%) PAL activities. The results are discussed on the basis of the role of these compounds on phenylpropanoid metabolism and root growth and suggest that the effects caused on POD and PAL activities are some of the many mechanisms by which allelochemicals influence plant growth. Univ Estadual Maringa, Dept Bioquim, BR-87020900 Maringa, Parana, Brazil Univ Maringa, Dept Biochem, BR-87020900 Maringa, Parana, Brazil Univ Estadual Paulista Julio Mesquita Filho, Dept Bot, IB, BR-18618000 Botucatu, SP, Brazil Univ Estadual Paulista Julio Mesquita Filho, Dept Bot, IB, BR-18618000 Botucatu, SP, Brazil

Made available in DSpace on 2020-12-10T16:29:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2000-05-01 An experiment was carried out at Fazenda Sao Manoel, pertaining to the Faculdade de Ciencias Agronamicas of the Universidade Estadual Paulista, Sao Manuel, SP, Brazil, to evaluate irrigation levels in the potato (Solanum tuberosum ssp, tuberosum) growth, cv. Aracy. This work was installed in a Bandy Dark-Red Latosol, under a plastic cover. The experimental design was an entirely randomized block composed by irrigation in the potato plots when the soil water potential has reached 15, 35, 55, 75 and 1,500 kPa,and five plant sampling time with four replicates. It was found that higher irrigation levels led to increase of the leaf area index, leaf area duration, relative growth rate and net assimilation rate. UNESP, IB, BR-18600000 Botucatu, SP, Brazil UNESP, IB, BR-18600000 Botucatu, SP, Brazil

Made available in DSpace on 2020-12-10T18:00:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2000-01-01 This work aimed at evaluating the influence of different levels of aluminum on the physiological parameters of the citrus rootstock Swingle Citrumelo in hydroponic solution. The experiment was carried out with a completely randomized design with three replications, subdivided in several lots. The levels of aluminum used were: 0, 7.5, 15 22.5 and 30 mg L-1 inform of AlCl3. 6H(2)O in nutrient solution. Following physiological parameters were evaluated: specific and relative foliar area, relative foliar mass, and the ratio of aerial part dry matter/root system dry matter. The results shelved that aluminum did not influence the parameters evaluated except the specific foliar area, which decreased starting at the 7.5 mg L-1 level. UNESP, Inst Biosci, Dept Bot, BR-18618000 Botucatu, SP, Brazil UNESP, Sch Agron Sci, Dept Soil Sci, BR-18603970 Botucatu, SP, Brazil UNESP, Dept Bot, Inst Biosci, BR-18603970 Botucatu, SP, Brazil UNESP, Dept Biostat, Inst Biosci, BR-18618000 Botucatu, SP, Brazil UNESP, Inst Biosci, Dept Bot, BR-18618000 Botucatu, SP, Brazil UNESP, Sch Agron Sci, Dept Soil Sci, BR-18603970 Botucatu, SP, Brazil UNESP, Dept Bot, Inst Biosci, BR-18603970 Botucatu, SP, Brazil UNESP, Dept Biostat, Inst Biosci, BR-18618000 Botucatu, SP, Brazil

Made available in DSpace on 2020-12-10T18:00:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2000-01-01 The work was carried out to study the effects of some auxins and boron in the rooting of kiwi (Actinidia chinensis Planch cv Bruno) stem cuttings.. These cuttings were treated on the base individually with H2O; NAA 300 mg.L-1 IBA 300 mg.L-1; NAA 300 mg.L-1 + Boron; IBA 300 mg.L-1 + Boron; NAA 0,5%-talc and IBA 0,5%-talc. After the treatments, the cuttings were placed in styrofoam trays with vermiculite under moist conditions for 120 days. The evaluation of auxin and boric acid effects were made by observing rooted stem cuttings percentage; reducing and total sugar analysis (g/100 g of dry matter); and tryptophan analysis (in mu g/100 mg of dry matter). The effects of such treatments were observed during four seasons of the year. The results showed that summer season was the best for rooting. Use of IBA or NAA in the cuttings showed to be unnecessary. Univ Estadual Paulista, UNESP, Inst Biociencias, Dept Bot, BR-18618000 Botucatu, SP, Brazil Univ Estadual Paulista, UNESP, Inst Biociencias, Dept Bioestatist, BR-18618000 Botucatu, SP, Brazil Univ Estadual Paulista, UNESP, Inst Biociencias, Dept Bot, BR-18618000 Botucatu, SP, Brazil Univ Estadual Paulista, UNESP, Inst Biociencias, Dept Bioestatist, BR-18618000 Botucatu, SP, Brazil

Estudou-se os efeitos de auxilias exógenas e ácido bórico, no enraizamento de estacas de lichia (Litchi chinensis Sonn.). As estacas foram uniformizadas, com 25 cm de comprimento e 4 folhas cortadas pela metade. Cerca de 2,5 cm da base das mesmas foi mergulhado nos tratamentos: H2O; Boro 150 µg/ml; IBA 5.000 ppm, IBA 2.000 ppm; IBA 5.000 ppm + Boro 150 µg/ml; IBA 2.000 ppm + Boro 150 µg/ml; NAA 3.000 ppm; NAA 1.500 ppm; NAA 3.000 ppm + Boro 150 µg/ml; NAA 1.500 ppm + Boro 150 µ/g/ml. A estaquia foi realizada no mês de setembro (Hemisfério sul), sendo que as estacas foram colocadas em bandejas de isopor, tendo como substrato vermiculita e mantidas sob nebulização intermitente. Os resultados obtidos permitiram concluir que o IBA 5.000 ppm por 1 minuto foi o tratamento mais efetivo, proporcionando 83,33% de estacas enraizadas em 120 dias, enquanto o tratamento testemunha (H2O), apresentou somente 16,67% de estacas enraizadas. The effects of exogen auxins and boric add were studied on lychee (Litchi chinensis Sonn.) cuttings. Cuttings were standardized to twenty-five cm length, with four leaves, cut in half. The bases of the cuttings were dipped of 2,5 cm in water solutions, resulting in the following treatments: H2O; Boron 150 µg/ml; IBA 5,000 ppm; IBA 2,000 ppm; IBA 5,000 ppm plus boron 150 µg/ml; IBA 2,000 ppm plus boron 150 µg/ml; NAA 3,000 ppm; NAA 1,500 ppm; NAA 3,000 ppm plus boron 150 µg/ml; NAA 1,500 ppm plus boron 150 µg/ml. Cutting was performed in September (southern hemisphere) and the cuttings were place in styrofoam trays, using vermiculite as substratum and kept under intermittent mist It was concluded that 5,000 ppm IBA for one minute was the best treatment to improve rooting (83,33%), while the control (H2O) showed only 16,67% of rooted cuttings.