Apoplast
Mostrando 1-12 de 114 artigos, teses e dissertações.
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1. Effects of aluminum on the elongation and external morphology of root tips in two maize genotypes
ABSTRACT The objective of this study was to evaluate the effects of toxic levels of aluminum (Al) on the growth and external morphology of root tips in two maize genotypes with differential Al tolerance. The maize genotypes UFVM-100 (Al-sensitive) and UFVM-200 (Al-tolerant) were treated with 0 and 50 mM Al in a 0.5 mM CaCl2 solution at pH 4.5; root elongatio
Bragantia. Publicado em: 27/11/2015
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2. O papel ecológico da neblina e a absorção foliar de água em três espécies lenhosas de Matas Nebulares, SP - Brasil / The ecological role of fog and foliar water uptake in three woody species from Southeastern Brazilian Cloud Forest
Fog deposition is an important water source in several terrestrial ecosystems. Fog water intercepted by the plants can run off to the soil or be absorbed by the leaves. However, very little is known about the ecological role of fog and the mechanisms and structures involved in foliar water uptake by woody species in tropical environments. In this context, we
Publicado em: 2010
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3. Identificação e caracterização de proteinas expressas no espaço intercelular de folhas de Theobroma cacao na interação com Moniliophthora perniciosa / Identification and characterization of proteins expressed in the intercellular space of leves from Theobroma cacao infected by Moniliophthora perniciosa
The invasion of the plant apoplast is a critical phase of the infection for numerous pathogens, including the fungus M. perniciosa (Mp) that remains in the intercellular space at the parasitic stage until about 60 days. Thus, the understanding of plant defenses induced in the apoplasm and the response mechanisms that the pathogens used for bypassing these de
Publicado em: 2008
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4. Análises do proteoma de raízes de cana-de-açúcar e da expressão de uma peroxidase apoplástica responsiva à micorriza arbuscular / Analysis of the sugarcane roots proteome and expression of an arbuscular mycorrhizaresponsive apoplastic peroxidase
Arbuscular mycorrhizae (AM) are symbiotic associations between fungi of the phylum Glomeromycota and most of the plant species. Even though the molecular mechanisms controlling the colonization process and AM development are largely unknown, proteins with differential accumulation in AM may have important regulatory roles. The aim of this work was to detect,
Publicado em: 2006
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5. Transformação genética de maracujá amarelo visando resistência à Xanthomonas axonopodis pv. passiflorae / Genetic transformation of yellow passion fruit to confer resistance to Xanthomonas axonopodis pv. passiflorae
Bacterial spot disease caused by Xanthomonas axonopodis pv. passiflorae is a serious problem in many passion fruit production areas in Brazil, especially if associated with anthracnose. Genetic transformation provides an alternative for obtaining resistant plants. Bactericide proteins such as attacins, found in the haemolymph of insects, have been used to co
Publicado em: 2005
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6. Analysis of the intercellular fluid proteome of Xylella fastidiosa - infected citrus leaves. / Análise do proteoma do fluído intercelular de folhas de laranjeiras infectadas com Xylella fastidiosa.
In order to understand the mechanisms regulating the Xylella fastidiosacitrus (Citrus sinensis var. Pêra) interaction, proteins with differential accumulation in the apoplast of Xf-infected citrus leaves with or without disease symptoms as compared to non-infected leaves, were identified and characterized using 2D-PAGE and mass spectrometry (MALDI-ToF). The
Publicado em: 2002
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7. Effect of Apoplastic Solutes on Water Potential in Elongating Sugarcane Leaves 1
Solute concentration in the apoplast of growing sugarcane (Saccharum spp. hybrid) leaves was measured using one direct and several indirect methods. The osmotic potential of apoplast solution collected directly by centrifugation of noninfiltrated tissue segments ranged from −0.25 megapascal in mature tissue to −0.35 megapascal in tissue just outside the
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8. Water Flow in Beta vulgaris Storage Tissue 1
The relative magnitudes of the hydraulic resistances, water capacities, and water potential equilibration time constants for the single cell, for the apoplast, and for the symplast in higher plant tissue are assessed. Swelling of beetroot (Beta vulgaris, var. `Detroit Red') storage tissue sections in pure water is measured using a displacement transducer. Th
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9. Origin of Growth-Induced Water Potential 1: Solute Concentration Is Low in Apoplast of Enlarging Tissues
We developed a new method to measure the solute concentration in the apoplast of stem tissue involving pressurizing the roots of intact seedlings (Glycine max [L.] Merr. or Pisum sativum L.), collecting a small amount of exudate from the surface of the stem under saturating humidities, and determining the osmotic potential of the solution with a micro-osmome
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10. Comparison of Gas Exchange and Bioassay Determinations of the Ammonia Compensation Point in Luzula sylvatica (Huds.) Gaud.1
Determinations of the NH3 compensation point for the understory plant of semi-natural woodlands Luzula sylvatica (Huds.) Gaud. were carried out by measurements of gas exchange and by calculation from the NH4+ concentration and pH of extracts of the foliar apoplast. Compensation points determined by gas exchange measurements were among the lowest yet re
American Society of Plant Physiologists.
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11. Role of Ascorbate in Detoxifying Ozone in the Apoplast of Spinach (Spinacia oleracea L.) Leaves.
Both reduced and oxidized ascorbate (AA and DHA) are present in the aqueous phase of the extracellular space, the apoplast, of spinach (Spinacia oleracea L.) leaves. Fumigation with 0.3 [mu]L L-1 of ozone resulted in ozone uptake by the leaves close to 0.9 pmol cm-2 of leaf surface area s-1. Apoplastic AA was slowly oxidized by ozone. The initial decrease of
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12. Self-Reporting Arabidopsis Expressing pH and [Ca2+] Indicators Unveil Ion Dynamics in the Cytoplasm and in the Apoplast under Abiotic Stress1[w]
For noninvasive in vivo measurements of intra- and extracellular ion concentrations, we produced transgenic Arabidopsis expressing pH and calcium indicators in the cytoplasm and in the apoplast. Ratiometric pH-sensitive derivatives of the green fluorescent protein (At-pHluorins) were used as pH indicators. For measurements of calcium ([Ca2+]), luminescent ae
The American Society for Plant Biologists.