Nitrogen Remobilization
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Effect of soybean ureases on seed germination and plant development
Abstract Urease catalyzes the hydrolysis of urea to ammonia and carbon dioxide. The ammonia (nitrogen (N) product of urease activity) is incorporated into organic compounds. Thus, urease is involved in N remobilization, as well as in primary N assimilation. Two urease isoforms have been described for soybean: the embryo-specific, encoded by the Eu1 gene, and
Genet. Mol. Biol.. Publicado em: 02/03/2017
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2. Nitrogen use by standard height and semi-dwarf isotypes.
Considerando que uma quantidade substancial do nitrogenio utilizado para producao de grao de cereais pode ser perdida por lixiviacao ou erosao, o desenvolvimento de cultivares com maior eficiencia na utilizacao deste nutriente bem como um melhor manejo do mesmo sao, sem duvida, praticas desejaveis em uma agricultura auto-sustentavel. O objetivo do presente t
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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3. FUNGICIDE AND NITROGEN MANAGEMENT IN WHEAT AND ITS EFFECTS ON YIELD AND GRAIN QUALITY / MANEJO DE FUNGICIDAS E NITROGÊNIO EM TRIGO E SEUS EFEITOS NA PRODUTIVIDADE E QUALIDADE DE GRÃOS
The wheat crop is severely attacked by diseases, which significantly reduce its profitability. The diseases reduce not only productivity but also quality, factor that is essential for the actual economic culture viability. In order to analyze which factors regarding chemical control of foliar diseases are essential to allow bread wheat varieties express the
Publicado em: 2010
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4. Qualidade da água e distribuição espacial de foraminíferos bentônicos em estuários das Baías Norte e Sul da Ilha de Santa Catarina (Brasil)
Watersheds with different characteristics lead to different rates of biogeochemical elements that contribute in estuarine systems. Thus, this study investigated the contribution of drainage on the nutrients as well as the responses of benthic foraminifera, with focus on estuarine region of six major systems that discharge in the North and South bays of Santa
Publicado em: 2009
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5. Histomorphometric analysis of the response of rat skeletal muscle to swimming, immobilization and rehabilitation
The objective of the present study was to determine to what extent, if any, swimming training applied before immobilization in a cast interferes with the rehabilitation process in rat muscles. Female Wistar rats, mean weight 260.52 ± 16.26 g, were divided into 4 groups of 6 rats each: control, 6 weeks under baseline conditions; trained, swimming training fo
Brazilian Journal of Medical and Biological Research. Publicado em: 2008-09
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6. Acúmulo e remobilização de NO3 - e eficiência de uso de nitrogênio em variedades tradicional e melhorada de arroz (Oryza sativa L.). / Accumulation and remobilization of NO3 - and efficiency in the use of nitrogen in traditional and improved varieties of rice (Oryza sativa L.).
The dynamics of accumulation and remobilization of NO3 -related protein content of the grains was studied in two varieties of rice, Piauí (traditional state of Maranhão) and IAC- 47 (enhanced by research institutions). The experiment was conducted in a greenhouse of UFRuralRJ in the period August 2006 to February 2007, with a completely randomized design w
Publicado em: 2008
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7. Metabolismo do nitrogênio e estado nutricional do cafeeiro (Coffea arabica) / Nitrate reductase and glutamine synthetase activity during coffee plant reproduction
The aim of this work was to evaluate the nitrate reductase (NR) and glutamine synthetase (GS) activity, total soluble protein content (PTS) in coffee leaves during the fruits development in field conditions. The study was carried out in ESALQ/USP (University of São Paulo), Piracicaba, São Paulo, Brazil in a Red Nitosol eutrofic. The experimental design was
Publicado em: 2007
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8. Absorção, assimilação e remobilização de nitrogênio em arroz, sob nutrição nítrica. Avaliação da expressão gênica diferencial. / Nitrogen uptake, assimilation and remobilization in rice under supply of nitrate. Evaluation of differential genic expression
O arroz é um dos mais importantes cereais para o homem, porque é fonte primária na alimentação de mais da metade da população do mundo. As plantas necessitam de nitrogênio para seu desenvolvimento, sendo este presente em solos aerados, na forma de nitrato. Em função do desgaste das áreas cultivadas, tem sido intensificada a utilização de fertili
Publicado em: 2007
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9. Uptake and remobilization of NO3 - in rice (Oryza sativa L.): Proton pumps activity and dynamics of the process / Absorção e remobilização de NO3 - em arroz (Oryza sativa L.): Atividade das bombas de prótons e a dinâmica do processo
The nitrogen metabolism of rice (Caiapó variety) was studied under nitrate starvation in hidroponic culture. Thirty days after germination half of the plants continued to receive the nutrient solution, while the other group was maintained without solution change and monitored until the exhaustion of NO3 -. The depletion of NO3 - resulted in greater decrease
Publicado em: 2006
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10. Acumulación, removilización, absorción postantesis y eficiencia de utilización de nitrógeno en trigo bajo diferentes labranzas y fertilizaciones
The objective of this work was to analyse N accumulation, translocation, postanthesis uptake and utilization efficiency under two tillage systems (moldboard plow and chisel plow) and different fertilizer types in two cultivars of bread wheat (Buck Pronto and Buck Charrúa). The N fertilizer treatments were: without N, 90 kg ha-1 at sowing as urea, 90 kg ha-1
Pesquisa Agropecuária Brasileira. Publicado em: 2003-05
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11. The Arabidopsis Nitrate Transporter NRT1.7, Expressed in Phloem, Is Responsible for Source-to-Sink Remobilization of Nitrate[W][OA]
Several quantitative trait locus analyses have suggested that grain yield and nitrogen use efficiency are well correlated with nitrate storage capacity and efficient remobilization. This study of the Arabidopsis thaliana nitrate transporter NRT1.7 provides new insights into nitrate remobilization. Immunoblots, quantitative RT-PCR, β-glucuronidase reporter a
American Society of Plant Biologists.
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12. Dynamics of Exogenous Nitrogen Partitioning and Nitrogen Remobilization from Vegetative Organs in Pea Revealed by 15N in Vivo Labeling throughout Seed Filling1
The fluxes of (1) exogenous nitrogen (N) assimilation and (2) remobilization of endogenous N from vegetative plant compartments were measured by 15N labeling during the seed-filling period in pea (Pisum sativum L. cv Caméor), to better understand the mechanism of N remobilization. While the majority (86%) of exogenous N was allocated to the vegetative organ
American Society of Plant Biologists.