Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.912.250.859.937.249.750 [Categoria DeCS]
Referências encontradas : 219 [refinar]
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  1 / 219 MEDLINE  
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[PMID]:29199225
[Au] Autor:Warashina T; Miyase T
[Ad] Endereço:School of Food and Nutritional Sciences, University of Shizuoka.
[Ti] Título:Flavonoid Glycosides from Sedum bulbiferum.
[So] Source:Chem Pharm Bull (Tokyo);65(12):1199-1204, 2017.
[Is] ISSN:1347-5223
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:The MeOH extract from dried whole Sedum bulbiferum MAKINO (Crassulaceae) plants yielded 34 compounds, including six new flavonoid glycosides and 28 known compounds. The structures of new compounds were established using NMR, Mass spectroscopic analysis and chemical evidence.
[Mh] Termos MeSH primário: Glicosídeos/química
Sedum/química
[Mh] Termos MeSH secundário: Flavonoides/química
Flavonoides/isolamento & purificação
Glicosídeos/isolamento & purificação
Espectroscopia de Ressonância Magnética
Espectrometria de Massas
Conformação Molecular
Extratos Vegetais/química
Sedum/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Flavonoids); 0 (Glycosides); 0 (Plant Extracts)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180110
[Lr] Data última revisão:
180110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171205
[St] Status:MEDLINE
[do] DOI:10.1248/cpb.c17-00678


  2 / 219 MEDLINE  
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[PMID]:28640885
[Au] Autor:Listl D; Poschlod P; Reisch C
[Ad] Endereço:Institute of Plant Sciences, University of Regensburg, Regensburg, Germany.
[Ti] Título:Phylogeography of a tough rock survivor in European dry grasslands.
[So] Source:PLoS One;12(6):e0179961, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Phylogeographic analyses of plants in Europe have revealed common glacial refugia and migration routes for several trees and herbs with arctic-alpine distributions. The postglacial histories of dry grassland species in central Europe have rarely been analyzed, even though the extremely species-rich habitat is threatened. Sedum album (Crassulaceae) is a common inhabitant of rocky sites in central European dry grasslands. We inferred the phylogeographic history of S. album over its distribution range in Europe. Genetic diversity within and differentiation between 34 S. album populations was examined using AFLP markers. Population isolation was indicated based on the rarity of the fragments and by isolation-by-distance effects. We sequenced the trnL-trnF region in 32 populations and used chloroplast microsatellites to analyze chloroplast haplotype distributions. Two distinct S. album lineages were detected. One lineage was comprised of populations from eastern and central parts of central Europe, and the Apennine Peninsula. A second lineage was comprised of populations from the Iberian Peninsula and western and northern parts of central Europe. Glacial refugia were identified based on the accumulation of ancient chloroplast haplotypes, high diversity of AFLP fragments within populations, and high levels of rare fragments in Liguria, Serbia, the Apennine and Iberian peninsulas. Cryptic refugia were detected in the Czech Republic and Slovakia. Isolation by distance was present all over the distribution range, and it was separately detected in southwestern and central Europe. In western Europe, where a contact zone between the two lineages can be expected, no isolation by distance was detected. Our results suggest migration routes of S. album northeastward from glacial refugia in southern Iberia, northward from the Apennine Peninsula, and northward and westward from the southeastern parts of central Europe. Therefore, central European grasslands were recently colonized by northern cryptic populations and source populations originating in the east and the Apennine Peninsula.
[Mh] Termos MeSH primário: Pradaria
Filogeografia
Sedum/fisiologia
[Mh] Termos MeSH secundário: Análise do Polimorfismo de Comprimento de Fragmentos Amplificados
Cloroplastos/genética
Repetições de Microssatélites/genética
Sedum/genética
Análise de Sobrevida
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170918
[Lr] Data última revisão:
170918
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170623
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0179961


  3 / 219 MEDLINE  
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[PMID]:28438701
[Au] Autor:Ito T; Yu CC; Nakamura K; Chung KF; Yang QE; Fu CX; Qi ZC; Kokubugata G
[Ad] Endereço:United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan; Department of Botany, National Museum of Nature and Science, Tsukuba, Ibaraki 305-0005, Japan. Electronic address: tito@kahaku.go.jp.
[Ti] Título:Unique parallel radiations of high-mountainous species of the genus Sedum (Crassulaceae) on the continental island of Taiwan.
[So] Source:Mol Phylogenet Evol;113:9-22, 2017 Aug.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:We explored the temporal and spatial diversification of the plant genus Sedum L. (Crassulaceae) in Taiwan based on molecular analysis of nrITS and cpDNA sequences from East Asian Sedum members. Our phylogenetic and ancestral area reconstruction analysis showed that Taiwanese Sedum comprised two lineages that independently migrated from Japan and Eastern China. Furthermore, the genetic distances among species in these two clades were smaller than those of other East Asian Sedum clades, and the Taiwanese members of each clade occupy extremely varied habitats with similar niches in high-mountain regions. These data indicate that species diversification occurred in parallel in the two Taiwanese Sedum lineages, and that these parallel radiations could have occurred within the small continental island of Taiwan. Moreover, the estimated time of divergence for Taiwanese Sedum indicates that the two radiations might have been correlated to the formation of mountains in Taiwan during the early Pleistocene. We suggest that these parallel radiations may be attributable to the geographical dynamics of Taiwan and specific biological features of Sedum that allow them to adapt to new ecological niches.
[Mh] Termos MeSH primário: Evolução Biológica
Ecossistema
Ilhas
Sedum/fisiologia
[Mh] Termos MeSH secundário: Teorema de Bayes
Núcleo Celular/genética
DNA de Cloroplastos/genética
DNA Ribossômico/genética
Geografia
Funções Verossimilhança
Filogenia
Folhas de Planta/anatomia & histologia
Sedum/genética
Especificidade da Espécie
Taiwan
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Chloroplast); 0 (DNA, Ribosomal)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170426
[St] Status:MEDLINE


  4 / 219 MEDLINE  
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[PMID]:28233204
[Au] Autor:Pan F; Luo S; Shen J; Wang Q; Ye J; Meng Q; Wu Y; Chen B; Cao X; Yang X; Feng Y
[Ad] Endereço:MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China.
[Ti] Título:The effects of endophytic bacterium SaMR12 on Sedum alfredii Hance metal ion uptake and the expression of three transporter family genes after cadmium exposure.
[So] Source:Environ Sci Pollut Res Int;24(10):9350-9360, 2017 Apr.
[Is] ISSN:1614-7499
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:A hydroponic experiment was conducted to investigate the effects of an endophytic bacterium SaMR12 on Sedum alfredii Hance metal ion accumulation, chlorophyll concentration, and the expression of three metal transporter families, zinc-regulated transporters, iron-regulated transporter-like protein (ZIP); natural resistance-associated macrophage protein; and heavy metal ATPase (HMA) at different Cd treatment levels. The results showed that at relatively low Cd conditions (≤25 µM), SaMR12 demonstrated a 19.5-27.5% increase in Fe, a 46.7-90.7% increase in Zn, and a 7.9-43.7% increase in Cu content in the shoot and elevated expression of SaIRT1, SaZIP3, SaHMA2, and SaNramp3 in the shoot and SaZIP1, SaHMA2, SaNramp1, and SaNramp3 in the root. At high Cd conditions (100 and 400 µM), SaMR12 demonstrated a 16.4-18.5% increase in leaf chlorophyll concentration, a 18.9-23.2% increase in Fe, and a 15.4-17.5% increase in Mg content in the shoot and elevated expression of SaZIP3, SaNramp6, SaHMA2, and SaHMA3 in the shoot and SaZIP3, SaNarmp1, SaNarmp3, and SaNarmp6 in the root. These results indicated that SaMR12 can elevate essential metal ion uptake and regulate the expression of transport genes to promote plant growth and enhance Cd tolerance and uptake to improve Cd accumulation up to 118-130%.
[Mh] Termos MeSH primário: Cádmio
Sedum/metabolismo
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Proteínas de Transporte de Cátions
Raízes de Plantas/metabolismo
Zinco
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cation Transport Proteins); 0 (natural resistance-associated macrophage protein 1); 00BH33GNGH (Cadmium); J41CSQ7QDS (Zinc)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171103
[Lr] Data última revisão:
171103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170225
[St] Status:MEDLINE
[do] DOI:10.1007/s11356-017-8565-9


  5 / 219 MEDLINE  
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[PMID]:28152607
[Au] Autor:Ma X; Yang J; Deng S; Huang M; Zheng S; Xu S; Cai J; Yang X; Ai H
[Ad] Endereço:a School of Pharmaceutical Sciences , South-Central University for Nationalities , Wuhan , China.
[Ti] Título:Two new megastigmanes from Chinese traditional medicinal plant Sedum sarmentosum.
[So] Source:Nat Prod Res;31(13):1473-1477, 2017 Jul.
[Is] ISSN:1478-6427
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:To discover new bioactive compounds from nature plants, a primary screening of traditional Chinese medicines had been taken. The screening results showed that a EtOAc extract of Sedum sarmentosum displayed a certain degree of cytotoxic activity and bioassay-directed isolation of EtOAc extract gave two new megastigmanes, (6S,9R)-2-hydroxy-4-(2,6,6-trimethyl-4-oxo-cyclohex-2-enyl)-butyric acid (1) and (6S,9R)-2-hydroxy-4-(2,6,6-trimethyl-4-oxo-cyclohex-2-enyl)-butyric acid methyl ester (2) together with seven known flavonoids. The chemical structures of 1 and 2 were elucidated on the basis of detailed 1D, 2D NMR and MS data. When tested against HepG2 and Hep3B hepatocellular carcinoma cell lines, compounds 1-9 showed weak anti-HCC activity. In addition, in vitro antioxidant activities of 1-9 were evaluated by ABTS radical cation-scavenging assay. 1 and 2 exhibited weak activity with per micromoles equivalent to 0.039 and 0.042 µM of Trolox, respectively. The flavonoid component, quercetin (9) showed the highest antioxidant activities with per micromoles equivalent 0.67 µM of Trolox.
[Mh] Termos MeSH primário: Norisoprenoides/isolamento & purificação
Plantas Medicinais/química
Sedum/química
[Mh] Termos MeSH secundário: Antineoplásicos/isolamento & purificação
Antineoplásicos/farmacologia
Antioxidantes/isolamento & purificação
Antioxidantes/farmacologia
Linhagem Celular Tumoral
Flavonoides/química
Seres Humanos
Espectroscopia de Ressonância Magnética
Espectrometria de Massas
Estrutura Molecular
Norisoprenoides/química
Extratos Vegetais/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antineoplastic Agents); 0 (Antioxidants); 0 (Flavonoids); 0 (Norisoprenoids); 0 (Plant Extracts)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170204
[St] Status:MEDLINE
[do] DOI:10.1080/14786419.2017.1280493


  6 / 219 MEDLINE  
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[PMID]:28071001
[Au] Autor:Gao XY; Liao XC; Wu RL; Liu T; Wang HX; Lu LL
[Ad] Endereço:MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China.
[Ti] Título:Purified isolation of vacuoles from Sedum alfredii leaf-derived protoplasts.
[So] Source:J Zhejiang Univ Sci B;18(1):85-88, 2017 Jan..
[Is] ISSN:1862-1783
[Cp] País de publicação:China
[La] Idioma:eng
[Ab] Resumo:This study aims to develop a method for isolating and purifying protoplasts/vacuoles from fresh leaves of the Cd hyperaccumulator plant species, Sedum alfredii. The results revealed that preheating cellulase and macerozyme at 50 °C for 5 min significantly accelerated the cell wall degradation. For the most optimal conditions for mesophyll protoplast isolation, the mixture of fresh leaves and cell lysates was followed by a 2-h-long vibration. The protoplast lysate for vacuole isolation was diluted, and 0.675 mmol/L was identified as the most appropriate 3-[(3-cholamidopropyl) dimethylammonio]-1-propanesulfonic acid (CHAPS) level, in which S. alfredii large vacuoles are characterized by a high metal and malic acid content. For the best vacuole purification results, we established that 0.8 mol/L was the most optimal mannitol level in the vacuole buffer in terms of vacuole protection during centrifugation, whereas a Ficoll concentration of 0.10 g/ml was adopted in the density-gradient centrifugation.
[Mh] Termos MeSH primário: Folhas de Planta/metabolismo
Protoplastos/metabolismo
Sedum/metabolismo
Vacúolos
[Mh] Termos MeSH secundário: Cádmio/metabolismo
Centrifugação
Centrifugação com Gradiente de Concentração
China
Germinação
Malatos/metabolismo
Manitol/metabolismo
Raízes de Plantas/metabolismo
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Malates); 00BH33GNGH (Cadmium); 3OWL53L36A (Mannitol); 817L1N4CKP (malic acid)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170713
[Lr] Data última revisão:
170713
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170111
[St] Status:MEDLINE
[do] DOI:10.1631/jzus.B1600138


  7 / 219 MEDLINE  
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[PMID]:28000074
[Au] Autor:Xiao W; Li D; Ye X; Xu H; Yao G; Wang J; Zhang Q; Hu J; Gao N
[Ad] Endereço:State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China.
[Ti] Título:Enhancement of Cd phytoextraction by hyperaccumulator Sedum alfredii using electrical field and organic amendments.
[So] Source:Environ Sci Pollut Res Int;24(5):5060-5067, 2017 Feb.
[Is] ISSN:1614-7499
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The combined use of organic amendment-assisted phytoextraction and electrokinetic remediation to decontaminate Cd-polluted soil was demonstrated in a laboratory-scale experiment. The plant species selected was the hyperaccumulator Sedum alfredii. Prior to the pot experiment, the loamy soil was treated with 15 g kg of pig manure compost, 10 g kg of humic acid, or 5 mmol kg of EDTA, and untreated soil without application of any amendment was the control. Two conditions were applied to each treatment: no voltage (without an electrical field) and a direct current (DC) electrical field (1 V cm with switching polarity every day). Results indicated that Cd concentrations in S. alfredii were significantly (p < 0.05) increased by application of the electrical field and soil amendments (pig manure compost, humic acid, and EDTA). By switching the polarity of the DC electrical field, significant pH variation from anode to cathode can be avoided, and no significant impact was observed on shoot biomass production. Electrical field application increased DTPA-extractable Cd in soils and the Cd accumulation in shoots by 6.06-15.64 and 24.53-52.31%, respectively. The addition of pig manure compost and humic acid enhanced shoot Cd accumulation by 1.54- to 1.92- and 1.38- to 1.64-fold because of their simultaneous enhancement of Cd concentration in shoots and biomass production. However, no enhancement of Cd accumulation was found in the EDTA treatment, which can be ascribed to the inhibition of plant growth caused by EDTA. In conclusion, pig manure compost or humic acid addition in combination with the application of a switched-polarity DC electrical field could significantly enhance Cd phytoextraction by hyperaccumulator S. alfredii.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Cádmio
Poluentes do Solo
Suínos
[Mh] Termos MeSH secundário: Animais
Biomassa
Eletricidade
Esterco
Sedum
Solo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Manure); 0 (Soil); 0 (Soil Pollutants); 00BH33GNGH (Cadmium)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161222
[St] Status:MEDLINE
[do] DOI:10.1007/s11356-016-8277-6


  8 / 219 MEDLINE  
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[PMID]:27888360
[Au] Autor:Wróbel-Marek J; Kurczynska E; Plachno BJ; Kozieradzka-Kiszkurno M
[Ad] Endereço:Department of Cell Biology, University of Silesia, Jagiellonska 28, 40-032, Katowice, Poland.
[Ti] Título:Identification of symplasmic domains in the embryo and seed of Sedum acre L. (Crassulaceae).
[So] Source:Planta;245(3):491-505, 2017 Mar.
[Is] ISSN:1432-2048
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:MAIN CONCLUSION: Our study demonstrated that symplasmic communication between Sedum acre seed compartments and the embryo proper is not uniform. The presence of plasmodesmata (PD) constitutes the structural basis for information exchange between cells, and symplasmic communication is involved in the regulation of cell differentiation and plant development. Most recent studies concerning an analysis of symplasmic communication between seed compartments and the embryo have been predominantly performed on Arabidopsis thaliana. The results presented in this paper describe the analysis of symplasmic communication on the example of Sedum acre seeds, because the ultrastructure of the seed compartments and the embryo proper, including the PD, have already been described, and this species represents an embryonic type of development different to Arabidopsis. Moreover, in this species, an unusual electron-dense dome associated with plasmodesmata on the border between the basal cell/chalazal suspensor cells and the basal cell/the endosperm has been described. This prompted the question as to whether these plasmodesmata are functional. Thus, the aim of this study was to describe the movement of symplasmic transport fluorochromes between different Sedum seed compartments, with particular emphasis on the movement between the basal cell and the embryo proper and endosperm, to answer the following questions: (1) are seeds divided into symplasmic domains; (2) if so, are they stable or do they change with the development? The results have shown that symplasmic tracers movement: (a) from the external integument to internal integument is restricted; (b) from the basal cell to the other part of the embryo proper and from the basal cell to the endosperm is also restricted;
[Mh] Termos MeSH primário: Sedum/embriologia
Sementes/metabolismo
[Mh] Termos MeSH secundário: Comunicação Celular
Endosperma/citologia
Fluorescência
Corantes Fluorescentes/metabolismo
Pirenos/metabolismo
Sedum/citologia
Sementes/citologia
Coloração e Rotulagem
Ácidos Sulfônicos/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (8-hydroxy-1,3,6-pyrenetrisulfonic acid); 0 (Fluorescent Dyes); 0 (Pyrenes); 0 (Sulfonic Acids)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170501
[Lr] Data última revisão:
170501
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161127
[St] Status:MEDLINE
[do] DOI:10.1007/s00425-016-2619-y


  9 / 219 MEDLINE  
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[PMID]:27848132
[Au] Autor:Huang Z; Tang S; Zhang L; Ma L; Ding S; Du L; Zhang D; Jin Y; Wang R; Huang C; Xia C
[Ad] Endereço:College of Chemistry, Sichuan University, Chengdu, 610064, China.
[Ti] Título:Interaction between U and Th on their uptake, distribution, and toxicity in V S. alfredii based on the phytoremediation of U and Th.
[So] Source:Environ Sci Pollut Res Int;24(3):2996-3005, 2017 Jan.
[Is] ISSN:1614-7499
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Variant Sedum alfredii Hance (V S. alfredii) could simultaneously take up U and Th from water with the highest concentrations recorded as 1.84 × 10 and 6.72 × 10 mg/kg in the roots, respectively. Th stimulated U uptake by V S. alfredii roots at Th (10 µM of Th), however, the opposite was observed at Th (100 µM of Th). A similar result was found in the effect of U on the uptake of Th by V S. alfredii. Subcellular fractionation studies of V S. alfredii indicated that U and Th were mainly stored in cell wall fraction, and much less was found in organelle and soluble fractions. Chemical form examination results showed that water-soluble U and Th were the predominant chemical forms in this plant. Addition of the other radionuclide in aqueous solutions altered the concentration and percentage of U or Th in cell wall fraction and in water-soluble form, resulting in the change of the uptake capacity of U or Th by V S. alfredii roots. Comparing with single U or Th treatment, the plant cells revealed more swollen chloroplasts and enhanced thickening in cell walls under the U + Th treatment, as observed by TEM. Those results collectively displayed that V S. alfredii may be utilized as a potential plant to simultaneously remove U and Th from aqueous solutions (rhizofiltration).
[Mh] Termos MeSH primário: Biodegradação Ambiental
Sedum
Tório
Urânio
[Mh] Termos MeSH secundário: Poluentes Ambientais
Raízes de Plantas/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Environmental Pollutants); 4OC371KSTK (Uranium); 60YU5MIG9W (Thorium)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171104
[Lr] Data última revisão:
171104
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161117
[St] Status:MEDLINE
[do] DOI:10.1007/s11356-016-8037-7


  10 / 219 MEDLINE  
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[PMID]:27662630
[Au] Autor:Li LZ; Tu C; Wu LH; Peijnenburg WJ; Ebbs S; Luo YM
[Ad] Endereço:Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, Yantai, People's Republic of China.
[Ti] Título:Pathways of root uptake and membrane transport of Cd in the zinc/cadmium hyperaccumulating plant Sedum plumbizincicola.
[So] Source:Environ Toxicol Chem;36(4):1038-1046, 2017 Apr.
[Is] ISSN:1552-8618
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Uptake and membrane transport of cadmium (Cd) in roots of the hyperaccumulator Sedum plumbizincicola X.H. Guo et S.B. Zhou ex L.H. Wu was characterized by assessing the impact of various inhibitors and ion channel blockers on Cd accumulation as well as the real-time net Cd flux at the roots with application of the scanning ion-selective electrode technique. The uncouplers 2,4-dinitrophenol and P-type adenosine triphosphatase inhibitor Na VO significantly limited Cd uptake and transport kinetics in the root of S. plumbizincicola. These findings indicate that Cd is actively taken up into the roots. The Cd content in plant was significantly decreased with pretreatments of the Ca channel blocker La or Gd and the K channel blocker tetraethylammonium, as well as in the presence of higher concentration of Ca and K . These findings indicated that uptake of Cd into the root of S. plumbizincicola proceeds through ion channels that are permeable to both Ca and K as confirmed by the direct evidence of real-time net Cd fluxes at the root surface in the treatments with ion channel inhibitors, as well as in the presence of elevated concentrations of Ca and K . In addition, the results suggested a role for phytochelatin and protein synthesis in mediating Cd uptake by S. plumbizincicola. These findings increase the understanding of Cd uptake and membrane transport pathways in roots of the Zn/Cd hyperaccumulator S. plumbizincicola. Environ Toxicol Chem 2017;36:1038-1046. © 2016 SETAC.
[Mh] Termos MeSH primário: Cádmio/metabolismo
Raízes de Plantas/metabolismo
Sedum/metabolismo
Poluentes do Solo/metabolismo
Zinco/metabolismo
[Mh] Termos MeSH secundário: Transporte Biológico
Cádmio/análise
Membrana Celular/metabolismo
Raízes de Plantas/química
Sedum/química
Poluentes do Solo/análise
Zinco/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil Pollutants); 00BH33GNGH (Cadmium); J41CSQ7QDS (Zinc)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170713
[Lr] Data última revisão:
170713
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160924
[St] Status:MEDLINE
[do] DOI:10.1002/etc.3625



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