Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.912.250.401.952 [Categoria DeCS]
Referências encontradas : 52 [refinar]
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[PMID]:27473109
[Au] Autor:Altamirano A; Cely JP; Etter A; Miranda A; Fuentes-Ramirez A; Acevedo P; Salas C; Vargas R
[Ad] Endereço:Laboratorio de Ecología del Paisaje Forestal, Departamento de Ciencias Forestales, Universidad de La Frontera, P.O. Box 54-D, Temuco, Chile. adison.altamirano@ufrontera.cl.
[Ti] Título:The invasive species Ulex europaeus (Fabaceae) shows high dynamism in a fragmented landscape of south-central Chile.
[So] Source:Environ Monit Assess;188(8):495, 2016 Aug.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Ulex europaeus (gorse) is an invasive shrub deemed as one of the most invasive species in the world. U. europaeus is widely distributed in the south-central area of Chile, which is considered a world hotspot for biodiversity conservation. In addition to its negative effects on the biodiversity of natural ecosystems, U. europaeus is one of the most severe pests for agriculture and forestry. Despite its importance as an invasive species, U. europaeus has been little studied. Although information exists on the potential distribution of the species, the interaction of the invasion process with the spatial dynamic of the landscape and the landscape-scale factors that control the presence or absence of the species is still lacking. We studied the spatial and temporal dynamics of the landscape and how these relate to U. europaeus invasion in south-central Chile. We used supervised classification of satellite images to determine the spatial distribution of the species and other land covers for the years 1986 and 2003, analysing the transitions between the different land covers. We used logistic regression for modelling the increase, decrease and permanence of U. europaeus invasion considering landscape variables. Results showed that the species covers only around 1 % of the study area and showed a 42 % reduction in area for the studied period. However, U. europaeus was the cover type which presented the greatest dynamism in the landscape. We found a strong relationship between changes in land cover and the invasion process, especially connected with forest plantations of exotic species, which promotes the displacement of U. europaeus. The model of gorse cover increase presented the best performance, and the most important predictors were distance to seed source and landscape complexity index. Our model predicted high spread potential of U. europaeus in areas of high conservation value. We conclude that proper management for this invasive species must take into account the spatial dynamics of the landscape within the invaded area in order to address containment, control or mitigation of the invasion.
[Mh] Termos MeSH primário: Conservação dos Recursos Naturais/métodos
Monitoramento Ambiental/métodos
Agricultura Florestal
Espécies Introduzidas
Ulex/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Agricultura
Biodiversidade
Chile
Ecossistema
Florestas
Modelos Teóricos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1612
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160731
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-016-5498-6


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[PMID]:26832961
[Au] Autor:Cirocco RM; Facelli JM; Watling JR
[Ad] Endereço:School of Biological Sciences, The University of Adelaide, Adelaide 5005, Australia and robert.cirocco@adelaide.edu.au.
[Ti] Título:Does light influence the relationship between a native stem hemiparasite and a native or introduced host?
[So] Source:Ann Bot;117(3):521-31, 2016 Mar.
[Is] ISSN:1095-8290
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND AND AIMS: There have been very few studies investigating the influence of light on the effects of hemiparasitic plants on their hosts, despite the fact that hemiparasites are capable of photosynthesis but also access carbon (C) from their host. In this study we manipulated light availability to limit photosynthesis in an established hemiparasite and its hosts, and determined whether this affected the parasite's impact on growth and performance of two different hosts. We expected that limiting light and reducing autotrophic C gain in the parasite (and possibly increasing its heterotrophic C gain) would lead to an increased impact on host growth and/or host photosynthesis in plants grown in low (LL) relative to high light (HL). METHODS: The Australian native host Leptospermum myrsinoides and the introduced host Ulex europaeus were either infected or not infected with the native stem hemiparasite Cassytha pubescens and grown in either HL or LL. Photosynthetic performance, nitrogen status and growth of hosts and parasite were quantified. Host water potentials were also measured. KEY RESULTS: In situ midday electron transport rates (ETRs) of C. pubescens on both hosts were significantly lower in LL compared with HL, enabling us to investigate the impact of the reduced level of parasite autotrophy on growth of hosts. Despite the lower levels of photosynthesis in the parasite, the relative impact of infection on host biomass was the same in both LL and HL. In fact, biomass of L. myrsinoides was unaffected by infection in either HL or LL, while biomass of U. europaeus was negatively affected by infection in both treatments. This suggests that although photosynthesis of the parasite was lower in LL, there was no additional impact on host biomass in LL. In addition, light did not affect the amount of parasite biomass supported per unit host biomass in either host, although this parameter was slightly lower in LL than HL for U. europaeus (P = 0·073). We also found no significant enhancement of host photosynthesis in response to infection in either host, regardless of light treatment. CONCLUSIONS: Despite lower photosynthetic rates in LL, C. pubescens did not increase its dependency on host C to the point where it affected host growth or photosynthesis. The impact of C. pubescens on host growth would be similar in areas of high and low light availability in the field, but the introduced host is more negatively affected by infection.
[Mh] Termos MeSH primário: Interações Hospedeiro-Parasita/efeitos da radiação
Espécies Introduzidas
Luz
Parasitos/fisiologia
Caules de Planta/parasitologia
Caules de Planta/efeitos da radiação
[Mh] Termos MeSH secundário: Análise de Variância
Animais
Biomassa
Transporte de Elétrons/efeitos da radiação
Leptospermum/parasitologia
Leptospermum/efeitos da radiação
Nitrogênio/metabolismo
Parasitos/crescimento & desenvolvimento
Parasitos/efeitos da radiação
Fotossíntese/efeitos da radiação
Brotos de Planta/fisiologia
Brotos de Planta/efeitos da radiação
Estômatos de Plantas/fisiologia
Estômatos de Plantas/efeitos da radiação
Ulex/parasitologia
Ulex/efeitos da radiação
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
N762921K75 (Nitrogen)
[Em] Mês de entrada:1611
[Cu] Atualização por classe:170301
[Lr] Data última revisão:
170301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160203
[St] Status:MEDLINE
[do] DOI:10.1093/aob/mcv193


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[PMID]:26703920
[Au] Autor:Cirocco RM; Facelli JM; Watling JR
[Ad] Endereço:School of Biological Sciences, The University of Adelaide, SA 5005, Australia robert.cirocco@adelaide.edu.au.
[Ti] Título:High water availability increases the negative impact of a native hemiparasite on its non-native host.
[So] Source:J Exp Bot;67(5):1567-75, 2016 Mar.
[Is] ISSN:1460-2431
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Environmental factors alter the impacts of parasitic plants on their hosts. However, there have been no controlled studies on how water availability modulates stem hemiparasites' effects on hosts. A glasshouse experiment was conducted to investigate the association between the Australian native stem hemiparasite Cassytha pubescens and the introduced host Ulex europaeus under high (HW) and low (LW) water supply. Cassytha pubescens had a significant, negative effect on the total biomass of U. europaeus, which was more severe in HW than LW. Regardless of watering treatment, infection significantly decreased shoot and root biomass, nodule biomass, nodule biomass per unit root biomass, F v/F m, and nitrogen concentration of U. europaeus. Host spine sodium concentration significantly increased in response to infection in LW but not HW conditions. Host water potential was significantly higher in HW than in LW, which may have allowed the parasite to maintain higher stomatal conductances in HW. In support of this, the δ(13)C of the parasite was significantly lower in HW than in LW (and significantly higher than the host). C. pubescens also had significantly higher F v/F m and 66% higher biomass per unit host in the HW compared with the LW treatment. The data suggest that the enhanced performance of C. pubescens in HW resulted in higher parasite growth rates and thus a larger demand for resources from the host, leading to poorer host performance in HW compared with LW. C. pubescens should more negatively affect U. europaeus growth under wet conditions rather than under dry conditions in the field.
[Mh] Termos MeSH primário: Interações Hospedeiro-Parasita/fisiologia
Lauraceae/fisiologia
Parasitos/fisiologia
Ulex/parasitologia
Água/metabolismo
[Mh] Termos MeSH secundário: Análise de Variância
Animais
Biomassa
Isótopos de Carbono
Nitrogênio/metabolismo
Raízes de Plantas/parasitologia
Brotos de Planta/parasitologia
Sódio/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Carbon Isotopes); 059QF0KO0R (Water); 9NEZ333N27 (Sodium); N762921K75 (Nitrogen)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151226
[St] Status:MEDLINE
[do] DOI:10.1093/jxb/erv548


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[PMID]:26449349
[Au] Autor:Cerasoli S; Costa E Silva F; Silva JM
[Ad] Endereço:Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, Lisboa, Portugal. sofiac@isa.ulisboa.pt.
[Ti] Título:Temporal dynamics of spectral bioindicators evidence biological and ecological differences among functional types in a cork oak open woodland.
[So] Source:Int J Biometeorol;60(6):813-25, 2016 Jun.
[Is] ISSN:1432-1254
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The application of spectral vegetation indices for the purpose of vegetation monitoring and modeling increased largely in recent years. Nonetheless, the interpretation of biophysical properties of vegetation through their spectral signature is still a challenging task. This is particularly true in Mediterranean oak forest characterized by a high spatial and temporal heterogeneity. In this study, the temporal dynamics of vegetation indices expected to be related with green biomass and photosynthetic efficiency were compared for the canopy of trees, the herbaceous layer, and two shrub species: cistus (Cistus salviifolius) and ulex (Ulex airensis). coexisting in a cork oak woodland. All indices were calculated from in situ measurements with a FieldSpec3 spectroradiometer (ASD Inc., Boulder, USA). Large differences emerged in the temporal trends and in the correlation between climate and vegetation indices. The relationship between spectral indices and temperature, radiation, and vapor pressure deficit for cork oak was opposite to that observed for the herbaceous layer and cistus. No correlation was observed between rainfall and vegetation indices in cork oak and ulex, but in the herbaceous layer and in the cistus, significant correlations were found. The analysis of spectral vegetation indices with fraction of absorbed PAR (fPAR) and quantum yield of chlorophyll fluorescence (ΔF/Fm') evidenced strongest relationships with the indices Normalized Difference Water Index (NDWI) and Photochemical Reflectance Index (PRI)512, respectively. Our results, while confirms the ability of spectral vegetation indices to represent temporal dynamics of biophysical properties of vegetation, evidence the importance to consider ecosystem composition for a correct ecological interpretation of results when the spatial resolution of observations includes different plant functional types.
[Mh] Termos MeSH primário: Cistus
Quercus
Ulex
[Mh] Termos MeSH secundário: Clorofila/metabolismo
Ecossistema
Fluorescência
Florestas
Fotossíntese
Folhas de Planta/metabolismo
Portugal
Quercus/metabolismo
Radiometria
Chuvas
Luz Solar
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
1406-65-1 (Chlorophyll)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:171010
[Lr] Data última revisão:
171010
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151010
[St] Status:MEDLINE
[do] DOI:10.1007/s00484-015-1075-x


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[PMID]:26383627
[Au] Autor:Atlan A; Hornoy B; Delerue F; Gonzalez M; Pierre JS; Tarayre M
[Ad] Endereço:UMR 6553 ECOBIO, CNRS/University of Rennes 1, Rennes, France.
[Ti] Título:Phenotypic Plasticity in Reproductive Traits of the Perennial Shrub Ulex europaeus in Response to Shading: A Multi-Year Monitoring of Cultivated Clones.
[So] Source:PLoS One;10(9):e0137500, 2015.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Phenotypic plasticity may be advantageous for plants to be able to rapidly cope with new and changing environments associated with climate change or during biological invasions. This is especially true for perennial plants, as they may need a longer period to respond genetically to selective pressures than annuals, and also because they are more likely to experience environmental changes during their lifespan. However, few studies have explored the plasticity of the reproductive life history traits of woody perennial species. This study focuses on a woody shrub, Ulex europaeus (common gorse), and on the response of its reproductive traits to one important environmental factor, shading. The study was performed on clones originating from western France (within the native range of this invasive species) and grown for seven years. We compared traits of plants grown in a shade treatment (with two successive shade levels) vs. full natural light. The traits monitored included flowering onset, pod production and seed predation. All traits studied responded to shading, exhibiting various levels of plasticity. In particular, dense shade induced a radical but reversible decrease in flower and pod production, while moderate shade had little effect on reproductive traits. The magnitude of the response to dense shade depended on the genotype, showing a genetically based polymorphism of plasticity. The level of plasticity also showed substantial variations between years, and the effect of environmental variations was cumulative over time. This suggests that plasticity can influence the lifetime fitness of U. Europaeus and is involved in the capacity of the species to grow under contrasting environmental conditions.
[Mh] Termos MeSH primário: Ulex/crescimento & desenvolvimento
Ulex/genética
[Mh] Termos MeSH secundário: Flores/genética
Flores/crescimento & desenvolvimento
Genótipo
Luz
Estações do Ano
Sementes/genética
Sementes/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1605
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150919
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0137500


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[PMID]:26336181
[Au] Autor:Ballantyne G; Baldock KC; Willmer PG
[Ad] Endereço:School of Biological Sciences, University of St Andrews, Harold Mitchell Building, St Andrews KY16 9TH, UK gab32@st-andrews.ac.uk.
[Ti] Título:Constructing more informative plant-pollinator networks: visitation and pollen deposition networks in a heathland plant community.
[So] Source:Proc Biol Sci;282(1814), 2015 Sep 07.
[Is] ISSN:1471-2954
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Interaction networks are widely used as tools to understand plant-pollinator communities, and to examine potential threats to plant diversity and food security if the ecosystem service provided by pollinating animals declines. However, most networks to date are based on recording visits to flowers, rather than recording clearly defined effective pollination events. Here we provide the first networks that explicitly incorporate measures of pollinator effectiveness (PE) from pollen deposition on stigmas per visit, and pollinator importance (PI) as the product of PE and visit frequency. These more informative networks, here produced for a low diversity heathland habitat, reveal that plant-pollinator interactions are more specialized than shown in most previous studies. At the studied site, the specialization index [Formula: see text] was lower for the visitation network than the PE network, which was in turn lower than [Formula: see text] for the PI network. Our study shows that collecting PE data is feasible for community-level studies in low diversity communities and that including information about PE can change the structure of interaction networks. This could have important consequences for our understanding of threats to pollination systems.
[Mh] Termos MeSH primário: Abelhas/fisiologia
Dípteros/fisiologia
Ecossistema
Ericaceae/fisiologia
Flores/fisiologia
Polinização
Ulex/fisiologia
[Mh] Termos MeSH secundário: Animais
Coleta de Dados
Inglaterra
Pólen/fisiologia
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1608
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150904
[St] Status:MEDLINE


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[PMID]:26160068
[Au] Autor:López López C; Celaya R; Santos AS; Rodrigues MA; Osoro K; Ferreira LM
[Ad] Endereço:1SERIDA - Servicio Regional de Investigación y Desarrollo Agroalimentario,PO Box 13,33300 Villaviciosa,Asturias,Spain.
[Ti] Título:Application of long-chain alcohols as faecal markers to estimate diet composition of horses and cattle fed with herbaceous and woody species.
[So] Source:Animal;9(11):1786-94, 2015 Nov.
[Is] ISSN:1751-732X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Utilization of long-chain alcohols (LCOH) as diet composition markers in horses and cattle was assessed in a study conducted with 12 mature crossbreed mares (385±47 kg BW) and six adult non-lactating cows (499±36 kg BW) of Asturiana de los Valles breed. The LCOH data were combined with alkane and long-chain fatty acid (LCFA) data to test the applicability of combining these markers to estimate diet composition. Animals were randomly divided into groups of three animals and received a daily total amount of 1.0 kg dry matter/100 kg BW of diets composed of different proportions of ryegrass (Lolium perenne) and woody species (Ulex gallii and heather). Diet composition was estimated from even-chain LCOH (C(20)-OH to C(30)-OH) combined or not with alkane (C(25)-C(31) and C(33)) and/or LCFA (C(22)-FA to C(28)-FA, C(30)-FA, C(32)-FA and C(34)-FA) concentrations in diet components and faeces by least-squares procedures, using marker faecal concentrations uncorrected for incomplete faecal recovery (FR0) or corrected using mean recoveries across diets within animal species (FR1). Results showed large differences between plant species in their LCOH profiles, and that these markers offered additional discriminatory information to that provided by alkanes and LCFA. The LCOH markers were incompletely recovered in the faeces of both animal species. In cattle, LCOH FR tended to increase with carbon-chain length in a linear manner in both diets (P < 0.001), whereas in horses overall data showed a curvilinear relationship between these variables. Combination of LCOH, LCFA and alkanes resulted in more accurate diet estimates. Correction of faecal LCOH concentrations to incomplete FR led to more accurate diet composition estimates in both animal species. Results obtained in this study suggest the usefulness of LCOH markers combined with alkanes and LCFA to estimate diet composition of horses and cattle grazing mixed grassy-woody plant communities.
[Mh] Termos MeSH primário: Álcoois/análise
Bovinos/fisiologia
Dieta/veterinária
Ácidos Graxos/análise
Cavalos/fisiologia
[Mh] Termos MeSH secundário: Alcanos/análise
Animais
Biomarcadores/análise
Ericaceae
Fezes
Feminino
Lactação
Lolium
Ulex
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Alcohols); 0 (Alkanes); 0 (Biomarkers); 0 (Fatty Acids)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150711
[St] Status:MEDLINE
[do] DOI:10.1017/S1751731115001196


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[PMID]:25702956
[Au] Autor:Webb DV; Mentrikoski MJ; Verduin L; Brill LB; Wick MR
[Ad] Endereço:Department of Pathology, University of Virginia Medical Center, Charlottesville, VA.
[Ti] Título:Basal cell carcinoma vs basaloid squamous cell carcinoma of the skin: an immunohistochemical reappraisal.
[So] Source:Ann Diagn Pathol;19(2):70-5, 2015 Apr.
[Is] ISSN:1532-8198
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Typical cutaneous basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) are morphologically dissimilar. It is well known, however, that poorly differentiated SCC may assume a basaloid phenotype, complicating the histologic distinction between these 2 neoplasms. Selected immunohistochemical stains have been used in the past to aid in that differential diagnosis. In the current study, additional markers were evaluated to determine whether they would be helpful in that regard. Twenty-nine cases of metatypical (squamoid) BCC (MBCC) and 25 examples of basaloid SCC (BSCC) were studied using the antibodies Ber-EP4 and MOC-31 as well as a plant lectin preparation from Ulex europaeus I (UEA-1). The resulting immunostains were interpreted independently by 3 pathologists, and the results showed that MBCCs demonstrated strong and diffuse staining for Ber-EP4 (25/29) and MOC-31 (29/29). In contrast, BSCCs tended to be only sporadically reactive for both markers (4/25 and 1/25 cases, respectively). Labeling for UEA-1 was observed in almost all BSCCs (24/25), but only 6 of 29 cases of MBCC showed limited, focal staining with that lectin. These data suggest that MOC-31 is a useful marker in the specified differential diagnosis, especially when used together with UEA-1.
[Mh] Termos MeSH primário: Carcinoma Basocelular/metabolismo
Carcinoma de Células Escamosas/metabolismo
Neoplasias Cutâneas/metabolismo
[Mh] Termos MeSH secundário: Anticorpos Monoclonais/química
Biomarcadores Tumorais/química
Biomarcadores Tumorais/metabolismo
Carcinoma Basocelular/diagnóstico
Carcinoma Basocelular/patologia
Carcinoma de Células Escamosas/diagnóstico
Carcinoma de Células Escamosas/patologia
Diagnóstico Diferencial
Seres Humanos
Imuno-Histoquímica/métodos
Neoplasias Cutâneas/diagnóstico
Neoplasias Cutâneas/patologia
Ulex/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antibodies, Monoclonal); 0 (Biomarkers, Tumor); 0 (MOC-31 monoclonal antibody, human); 0 (human epithelial antigen-125)
[Em] Mês de entrada:1512
[Cu] Atualização por classe:150318
[Lr] Data última revisão:
150318
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150224
[St] Status:MEDLINE


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[PMID]:24933904
[Au] Autor:Gomes P; Valente T; Pamplona J; Braga MA; Pissarra J; Gil JA; de la Torre ML
[Ti] Título:Metal uptake by native plants and revegetation potential of mining sulfide-rich waste-dumps.
[So] Source:Int J Phytoremediation;16(7-12):1087-103, 2014.
[Is] ISSN:1522-6514
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Waste dumps resulting from metal exploitation create serious environmental damage, providing soil and water degradation over long distances. Phytostabilization can be used to remediate these mining sites. The present study aims to evaluate the behavior of selected plant species (Erica arborea, Ulex europaeus, Agrostis delicatula, and Cytisus multiflorus) that grow spontaneously in three sulfide-rich waste-dumps (Lapa Grande, Cerdeirinha, and Penedono, Portugal). These sites represent different geological, climatic and floristic settings. The results indicate distinctive levels and types of metal contamination: Penedono presents highest sulfate and metal contents, especially As, with low levels of Fe. In contrast, at Lapa Grande and Cerdeirinha Fe, Mn, and Zn are the dominant metals. In accordance, each waste dump develops a typical plant community, providing a specific vegetation inventory. At Penedono, Agrostis delicatula accumulates As, Pb, Cu, Mn, and Zn, showing higher bioaccumulation factors (BF) for Mn (32.1) and As (24.4). At Cerdeirinha, Ulex europaeus has the highest BF for Pb (984), while at Lapa Grande, Erica arborea presents high BF for Mn (9.8) and Pb (8.1). Regarding TF, low values were obtained for most of the metals, especially As (TF < 1). Therefore, the results obtained from representative plant species suggest appropriate behavior for phytostabilization measures.
[Mh] Termos MeSH primário: Agrostis/metabolismo
Arsênico/metabolismo
Ericaceae/metabolismo
Fabaceae/metabolismo
Metais Pesados/metabolismo
Poluentes do Solo/metabolismo
[Mh] Termos MeSH secundário: Agrostis/crescimento & desenvolvimento
Arsênico/análise
Biodegradação Ambiental
Transporte Biológico
Biomassa
Cytisus/crescimento & desenvolvimento
Cytisus/metabolismo
Ericaceae/crescimento & desenvolvimento
Fabaceae/crescimento & desenvolvimento
Metais Pesados/análise
Raízes de Plantas/crescimento & desenvolvimento
Raízes de Plantas/metabolismo
Brotos de Planta/crescimento & desenvolvimento
Brotos de Planta/metabolismo
Portugal
Rizosfera
Solo/química
Poluentes do Solo/análise
Sulfetos/análise
Ulex/crescimento & desenvolvimento
Ulex/metabolismo
Instalações de Eliminação de Resíduos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Metals, Heavy); 0 (Soil); 0 (Soil Pollutants); 0 (Sulfides); N712M78A8G (Arsenic)
[Em] Mês de entrada:1408
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140618
[St] Status:MEDLINE


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[PMID]:24433213
[Au] Autor:Moreira B; Castellanos MC; Pausas JG
[Ad] Endereço:CIDE-CSIC, Ctra. Náquera Km. 4.5, 46113, Montcada, Valencia, Spain.
[Ti] Título:Genetic component of flammability variation in a Mediterranean shrub.
[So] Source:Mol Ecol;23(5):1213-23, 2014 Mar.
[Is] ISSN:1365-294X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Recurrent fires impose a strong selection pressure in many ecosystems worldwide. In such ecosystems, plant flammability is of paramount importance because it enhances population persistence, particularly in non-resprouting species. Indeed, there is evidence of phenotypic divergence of flammability under different fire regimes. Our general hypothesis is that flammability-enhancing traits are adaptive; here, we test whether they have a genetic component. To test this hypothesis, we used the postfire obligate seeder Ulex parviflorus from sites historically exposed to different fire recurrence. We associated molecular variation in potentially adaptive loci detected with a genomic scan (using AFLP markers) with individual phenotypic variability in flammability across fire regimes. We found that at least 42% of the phenotypic variation in flammability was explained by the genetic divergence in a subset of AFLP loci. In spite of generalized gene flow, the genetic variability was structured by differences in fire recurrence. Our results provide the first field evidence supporting that traits enhancing plant flammability have a genetic component and thus can be responding to natural selection driven by fire. These results highlight the importance of flammability as an adaptive trait in fire-prone ecosystems.
[Mh] Termos MeSH primário: Ecossistema
Fogo
Seleção Genética
Ulex/genética
[Mh] Termos MeSH secundário: Adaptação Biológica/genética
Análise do Polimorfismo de Comprimento de Fragmentos Amplificados
Proteínas de Bactérias
Fluxo Gênico
Loci Gênicos
Genótipo
Lipoproteínas
Modelos Logísticos
Região do Mediterrâneo
Proteínas de Membrana
Fenótipo
Ulex/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Bacterial Proteins); 0 (Lipoproteins); 0 (Membrane Proteins); 0 (SpaI protein, Bacillus subtilis)
[Em] Mês de entrada:1406
[Cu] Atualização por classe:140227
[Lr] Data última revisão:
140227
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140118
[St] Status:MEDLINE
[do] DOI:10.1111/mec.12665



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