Source Sink Relationship
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Source-sink relationship of soybean accessed by increasing in solar radiation through the plant canopy
ABSTRACT The photosynthetic metabolism is a key point to improve soybean yield. In this work, we demonstrated that radiation use by soybean plants can be improved, aiming to improve the grain yield in the lower canopy. The objective of this study was to observe whether the increase in solar radiation input in the canopy of soybean plants improves their yield
Revista Ceres. Publicado em: 2022
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2. An Appraisal on the Source-to-Sink Relationship in Plants: an Application of Desorption Electrospray Ionization Mass Spectrometry Imaging
Amino acids/ureides and carbohydrates are the main nutrients for the plants growth. These metabolites are continuously translocated through the plant organism via well-known transportation mechanisms. The well-established source-to-sink relationship involves the transfer of these nutrients from mature (source) to young (sink) leaves. Desorption electrospray
J. Braz. Chem. Soc.. Publicado em: 2018-01
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3. Química entre a microcamada superficial oceânica e os aerossóis marinhos
The sea surface microlayer (SML), although poorly understood, is important in biogeochemical cycling and sea - air exchanges; it is a source or a sink for a range of pollutants. In this paper, an overview of sampling techniques and the role of SML in biogeochemical cycles and climate is presented. The chemical and biological nature of the ocean surface film
Quím. Nova. Publicado em: 2014
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4. Coordenação temporal da relação fonte dreno em plântulas de jatobá (Hymenaea courbaril L.) / Temporal coordination of the source sink relationship in jatobá seedings (Hymenaea courbaryl L.)
As plântulas de jatobá apresentam grandes quantidades de reserva de carbono, na forma de polissacarídeos constituintes de parede, presentes em seus cotilédones. Estas reservas são inicialmente utilizadas para expansão dos eófilos. Após esta fase, as plântulas passam a dispor de duas fontes de carbono, sendo elas, as reservas (que ainda não se esgot
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/01/2012
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5. Mecanismos fotossintéticos e relação fonte-dreno em cana-de-açucar cultivada em atmosfera enriquecida de CO2 / Photosynthetic mechanisms and source-sink relationship in sugarcane grown in elevated CO2
A concentração de CO2 na atmosfera tem aumentado progressivamente nos últimos anos. Este aumento é atribuído em sua maior parte à ação humana e à atividades como mudanças no uso da terra, desflorestamento e uso de combustíveis fósseis. É previsto que as mudanças do clima decorrentes desse aumento do CO2 irão impactar de forma significativa na
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2011
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6. Resposta do caupi a remocao de flores e vagens.
O objetivo do estudo foi avaliar os rendimentos de graos verdes e secos de genotipos de caupi (Vigna unguiculata (L.) Walp.) (CNCx 187-22D-2, CNCx 24-015-E, CNCx 149-016 e Pitiuba). Objetivou-se tambem estudar os efeitos de tratamentos de frutificacao - frutificacao normal, supressao parcial da frutificacao e supressao total da frutificacao - sobre o rendime
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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7. Relação fonte:dreno em melão Cantaloupe cultivado em ambiente protegido / Source:sink relationship in Cantaloupe melon cultivated in a protected environment
Dois experimentos foram conduzidos na Universidade Federal de Viçosa UFV, com o objetivo de avaliar o efeito da relação fonte:dreno sobre índices fisiológicos, produtividade e qualidade de frutos de melão Cantaloupe cultivado em ambiente protegido. O experimento 1 foi conduzido no período de 26/9/2005 a 24/1/2006, em vasos (11,5 dm3) preenchidos com s
Publicado em: 2007
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8. The relation between atrial fibrillation wavefront characteristics and accessory pathway conduction.
Although the source-sink relationship for impulse propagation in cardiac tissues has been demonstrated in vitro, there has been no verification of this hypothesis in humans. Accordingly, eight patients undergoing surgical division of their accessory pathways were studied. A 56-channel (7 x 8) bipolar plaque electrode array was placed over the atrioventricula
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9. Glucose and Stress Independently Regulate Source and Sink Metabolism and Defense Mechanisms via Signal Transduction Pathways Involving Protein Phosphorylation.
In higher plants, sugars are required not only to sustain heterotrophic growth but also to regulate the expression of a variety of genes. Environmental stresses, such as pathogen infection and wounding, activate a cascade of defense responses and may also affect carbohydrate metabolism. In this study, the relationship between sugar- and stress-activated sign
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10. De Novo Amino Acid Biosynthesis in Potato Tubers Is Regulated by Sucrose Levels1[w]
Plant growth and development are strongly dependent on sink-source interactions. In the majority of plants, sucrose (Suc) is the dominant form in which photo-assimilate is transported from source to sinks. Although the effects of Suc on photosynthetic metabolism have been intensively studied, the effect of Suc supply on metabolism in sink organs has received
The American Society for Plant Biologists.
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11. Structural and Functional Vein Maturation in Developing Tobacco Leaves in Relation to AtSUC2 Promoter Activity1
Transgenic tobacco (Nicotiana tabacum) plants expressing green fluorescent protein (GFP) from the AtSUC2 promoter were used to study the function of different vein classes in developing leaves. In sink leaves, unloading capacity occurred acropetally, with the class I (midrib) and class II veins becoming functional in phloem unloading before the maturation of
American Society of Plant Biologists.
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12. Characterization of Source- and Sink-Specific Sucrose/H+ Symporters from Carrot
To understand how sucrose (Suc) is transported from source leaves to developing tap roots of carrot (Daucus carota L.), we cloned two cDNAs (DcSUT1 and DcSUT2) for proteins with homologies to plant Suc/H+ symporters. The deduced polypeptide sequences are 52% identical and have 12 predicted membrane-spanning domains each. Transport activities were confi
American Society of Plant Physiologists.